{"product_id":"shimano-rt-cl800-ultegra-cl-800-disc-brake-rotor","title":"Shimano RT-CL800 \/ Ultegra CL-800 Disc Brake Rotor","description":"\u003cdiv class=\"ds-virtual-list-items _6f2c522\"\u003e\n\u003cdiv class=\"ds-virtual-list-visible-items\"\u003e\n\u003cdiv class=\"_4f9bf79 d7dc56a8 _43c05b5\"\u003e\n\u003cdiv class=\"ds-message _63c77b1\"\u003e\n\u003cdiv class=\"ds-markdown ds-assistant-message-main-content\"\u003e\n\u003ch2\u003e\u003cspan class=\"\"\u003eProduct Overview\u003c\/span\u003e\u003c\/h2\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eICE TECHNOLOGIES FREEZA. Flagship cooling. Whisper‑quiet stopping power.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eThe Shimano RT-CL900 (also known as the Dura‑Ace CL‑900) is Shimano's flagship Centre Lock disc brake rotor, engineered for the Dura‑Ace R9200 series\u003c\/span\u003e\u003cspan class=\"\"\u003e. Developed with a singular focus—decreasing heat deformation—the CL‑900 delivers quieter, more consistent braking performance than ever before, without sacrificing weight or heat dissipation\u003c\/span\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003cspan class=\"\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eWhether you're descending alpine passes, navigating technical gravel descents, or sprinting through city traffic, the CL‑900 provides the confidence and control that defines Shimano's top‑tier engineering.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cspan class=\"\"\u003eKey Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e❄️ ICE TECHNOLOGIES FREEZA – The Ultimate in Heat Management\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3‑layer sandwich construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e– stainless steel outer layers bonded to an aluminium core\u003c\/span\u003e\u003ca href=\"https:\/\/www.trekbikes.com\/us\/en_US\/equipment\/cycling-components\/bike-brakes-pads-levers\/bike-disc-brake-rotors\/shimano-cl900-disc-brake-rotor\/p\/5309219\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eExposed aluminium radiator fins\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e– the inner aluminium layer extends outward, acting as a heat sink to dissipate brake heat rapidly\u003c\/span\u003e\u003ca href=\"https:\/\/www.starbike.com\/en\/shimano-dura-ace-cl-900-disc-brake-rotor-centerlock-icetec-internal-gear\/?currency=GBP\u0026amp;country=GB\u0026amp;keep_params\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHeat‑dissipation paint\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e– a specialised coating boosts cooling efficiency\u003c\/span\u003e\u003ca href=\"https:\/\/www.starbike.com\/en\/shimano-dura-ace-cl-900-disc-brake-rotor-centerlock-icetec-internal-gear\/?currency=GBP\u0026amp;country=GB\u0026amp;keep_params\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eReduces surface temperature by up to\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e50°C\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ecompared to conventional rotors\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eConsistent braking performance on\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003elong, steep descents\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ewithout brake fade\u003c\/span\u003e\u003ca href=\"https:\/\/www.trekbikes.com\/us\/en_US\/equipment\/cycling-components\/bike-brakes-pads-levers\/bike-disc-brake-rotors\/shimano-cl900-disc-brake-rotor\/p\/5309219\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.bike24.com\/p2621815.html?origin=PDP_related\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e🔇 Whisper‑Quiet Operation\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eReinforced alloy carrier\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eoptimised arm shape\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eminimise vibration and resonance\u003c\/span\u003e\u003ca href=\"https:\/\/www.bike24.com\/p2621815.html?origin=PDP_related\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eQuietest braking performance in Shimano's road range\u003c\/span\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eNo more annoying squeal or chatter – just smooth, silent stopping power\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e⚡ Consistent, Powerful Braking\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eExcellent heat dissipation ensures\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003estable braking performance\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eride after ride\u003c\/span\u003e\u003ca href=\"https:\/\/www.trekbikes.com\/us\/en_US\/equipment\/cycling-components\/bike-brakes-pads-levers\/bike-disc-brake-rotors\/shimano-cl900-disc-brake-rotor\/p\/5309219\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eReduced brake fade\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e– power remains consistent even on extended descents\u003c\/span\u003e\u003ca href=\"https:\/\/www.bike24.com\/p2621815.html?origin=PDP_related\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eLonger pad life\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e– cooler operating temperatures extend brake pad longevity\u003c\/span\u003e\u003ca href=\"https:\/\/www.trekbikes.com\/us\/en_US\/equipment\/cycling-components\/bike-brakes-pads-levers\/bike-disc-brake-rotors\/shimano-cl900-disc-brake-rotor\/p\/5309219\/\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eCompatible with\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eboth resin and metal brake pads\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/productinfo.shimano.com\/zh-TW\/product\/RT-CL900\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e🔧 Centre Lock System – Simple, Secure Installation\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSpline mount\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ewith lockring for quick, tool‑efficient installation and removal\u003c\/span\u003e\u003ca href=\"https:\/\/www.starbike.com\/en\/shimano-dura-ace-cl-900-disc-brake-rotor-centerlock-icetec-internal-gear\/?currency=GBP\u0026amp;country=GB\u0026amp;keep_params\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePrecision fit\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eenhances rigidity and braking performance\u003c\/span\u003e\u003ca href=\"https:\/\/www.starbike.com\/en\/shimano-dura-ace-cl-900-disc-brake-rotor-centerlock-icetec-internal-gear\/?currency=GBP\u0026amp;country=GB\u0026amp;keep_params\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eAvailable in\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e140mm, 160mm, 180mm, and 203mm\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ediameters\u003c\/span\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003e140mm and 160mm versions optimised for\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eroad and gravel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eapplications\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cspan class=\"\"\u003eSpecifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\n\u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eDetail\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eModel No.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eRT-CL900\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSeries\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003eSHIMANO Dura‑Ace R9200\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMount Type\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"\"\u003eCENTRE LOCK (internal spline)\u003c\/span\u003e\u003ca href=\"https:\/\/www.starbike.com\/en\/shimano-dura-ace-cl-900-disc-brake-rotor-centerlock-icetec-internal-gear\/?currency=GBP\u0026amp;country=GB\u0026amp;keep_params\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eTechnology\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"\"\u003eICE TECHNOLOGIES FREEZA with heat‑dissipation paint\u003c\/span\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eConstruction\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"\"\u003e3‑layer stainless steel + aluminium + stainless steel\u003c\/span\u003e\u003ca href=\"https:\/\/www.bike24.com\/p2621815.html?origin=PDP_related\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eRotor Thickness\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"\"\u003e1.75mm (standard)\u003c\/span\u003e\u003ca href=\"https:\/\/productinfo.shimano.com\/zh-TW\/product\/RT-CL900\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePad Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"\"\u003eMetal \u0026amp; Resin (Narrow pad shape)\u003c\/span\u003e\u003ca href=\"https:\/\/productinfo.shimano.com\/zh-TW\/product\/RT-CL900\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.starbike.com\/en\/shimano-dura-ace-cl-900-disc-brake-rotor-centerlock-icetec-internal-gear\/?currency=GBP\u0026amp;country=GB\u0026amp;keep_params\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eLockring\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"\"\u003eAluminium, anodised (internal type)\u003c\/span\u003e\u003ca href=\"https:\/\/productinfo.shimano.com\/zh-TW\/product\/RT-CL900\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFinish\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"\"\u003eStainless steel (polished) \/ Aluminium (painted)\u003c\/span\u003e\u003ca href=\"https:\/\/productinfo.shimano.com\/zh-TW\/product\/RT-CL900\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e📏 Sizes \u0026amp; Weights\u003c\/span\u003e\u003c\/h3\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\n\u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eDiameter\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eWeight (approx.)\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e140mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003e96–97g\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e160mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003e114g\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e180mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003e139g\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e203mm\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e\u003cspan class=\"\"\u003e169g\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cspan class=\"\"\u003eCompatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan class=\"\"\u003e✅ Compatible With:\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eGroupsets:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eShimano Dura‑Ace\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eR9200 \/ R9270\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eShimano Ultegra\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eR8100 \/ R8170\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eShimano 105\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eR7100 \/ R7150\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eShimano GRX\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eRX820 \/ RX810\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eShimano XTR\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eM9100\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMount Type:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCENTRE LOCK\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003ehubs (internal spline)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePad Compounds:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eResin\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e– quieter, more initial bite\u003c\/span\u003e\u003ca href=\"https:\/\/productinfo.shimano.com\/zh-TW\/product\/RT-CL900\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMetal\/Sintered\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e– longer lasting, better wet performance\u003c\/span\u003e\u003ca href=\"https:\/\/productinfo.shimano.com\/zh-TW\/product\/RT-CL900\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cspan class=\"\"\u003eWhat's in the Box\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eShimano RT-CL900 Disc Brake Rotor × 1\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003eAluminium Centre Lock lockring (internal type)\u003c\/span\u003e\u003ca href=\"https:\/\/productinfo.shimano.com\/zh-TW\/product\/RT-CL900\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan class=\"\"\u003eBrake pads sold separately.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cspan class=\"\"\u003eWhy Choose Shimano RT-CL900?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv class=\"ds-scroll-area ds-scroll-area--show-on-focus-within ds-scroll-area--enabled _1210dd7 c03cafe9\"\u003e\n\u003cdiv class=\"ds-scroll-area__gutters\"\u003e\n\u003cdiv class=\"ds-scroll-area__horizontal-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ds-scroll-area__vertical-gutter\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eRT-CL900 (Dura‑Ace)\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eRT-MT900 (XTR)\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan class=\"\"\u003eThird‑Party Rotors\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eICE TECHNOLOGIES FREEZA\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐⭐ Yes\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐⭐ Yes\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐ Varies\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e3‑Layer Construction\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐⭐ Yes\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐⭐ Yes\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐ Varies\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eHeat‑Dissipation Paint\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐⭐ Yes\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐ Yes\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐ Varies\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eWeight (160mm)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan class=\"\"\u003e⭐⭐⭐⭐⭐\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003e114g\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐ ~114g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐ Variable\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eQuiet Operation\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐⭐ Flagship\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐⭐ Flagship\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐ Varies\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePrice\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐ Premium\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐ Premium\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"\"\u003e⭐⭐⭐⭐ Value\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cspan class=\"\"\u003eWhat Riders Are Saying\u003c\/span\u003e\u003c\/h2\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan class=\"\"\u003e\"Highly efficient and precise braking.\"\u003c\/span\u003e\u003c\/em\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e—\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eFrederic, 5\/5 Review\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan class=\"\"\u003e\"Qualità top.\"\u003c\/span\u003e\u003c\/em\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e—\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMassimo, 5\/5 Review\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cblockquote\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan class=\"\"\u003e\"Quieter than ever, but with superb, consistent braking performance on any long, steep descents thanks to excellent heat dissipation.\"\u003c\/span\u003e\u003c\/em\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003e—\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eShimano\u003c\/span\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cspan class=\"\"\u003eTechnical Notes\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003e⚠️\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eCentre Lock System:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eRequires a CENTRE LOCK compatible hub and a cassette lockring tool for installation\u003c\/span\u003e\u003ca href=\"https:\/\/www.starbike.com\/en\/shimano-dura-ace-cl-900-disc-brake-rotor-centerlock-icetec-internal-gear\/?currency=GBP\u0026amp;country=GB\u0026amp;keep_params\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003e⚠️\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003ePad Selection:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eBoth resin and metal pads are compatible – resin for quieter operation, metal for longer life and better wet performance\u003c\/span\u003e\u003ca href=\"https:\/\/productinfo.shimano.com\/zh-TW\/product\/RT-CL900\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003e⚠️\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eBed‑In Process:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eNew rotors require a proper bed‑in procedure. Follow your brake manufacturer's guidelines for best results\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003e⚠️\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eMaintenance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eClean rotors regularly with isopropyl alcohol or dedicated disc brake cleaner. Avoid contamination from oils or lubricants\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cspan class=\"\"\u003e⚠️\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eSizing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"\"\u003e\u003cspan\u003e \u003c\/span\u003eVerify your frame and fork support the chosen rotor size (140mm, 160mm, 180mm, or 203mm) before purchasing\u003c\/span\u003e\u003ca href=\"https:\/\/bike.shimano.com\/en-SG\/products\/components\/pdp.P-RT-CL900.html\" rel=\"noreferrer\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e\u003cspan class=\"\"\u003eAbout Shimano Dura‑Ace\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cem\u003e\u003cspan class=\"\"\u003eDura‑Ace is Shimano's flagship road cycling groupset, representing over 50 years of continuous innovation and refinement. The RT‑CL900 rotor embodies the \"Science of Speed\" – the pursuit of ultimate performance through advanced materials, precision engineering, and obsessive attention to detail. Trusted by WorldTour teams and champion riders worldwide, Dura‑Ace is the choice of those who demand the very best.\u003c\/span\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"ds-markdown-paragraph\"\u003e\u003cstrong\u003e\u003cspan class=\"\"\u003eExperience flagship cooling and whisper‑quiet stopping power. Add the Shimano RT‑CL900 to your cart today!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ds-flex _0a3d93b\"\u003e\n\u003cdiv class=\"ds-flex _965abe9 _54866f7\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SHIMANO","offers":[{"title":"140MM","offer_id":54156121473388,"sku":null,"price":330.0,"currency_code":"HKD","in_stock":true},{"title":"160MM","offer_id":54156121506156,"sku":null,"price":330.0,"currency_code":"HKD","in_stock":true},{"title":"180MM","offer_id":54156121538924,"sku":null,"price":400.0,"currency_code":"HKD","in_stock":true},{"title":"203MM","offer_id":54156121571692,"sku":null,"price":400.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/6210\/6988\/files\/ICETECHNOLOGIESFREEZA_2.jpg?v=1786196977","url":"https:\/\/watts-lab.myshopify.com\/products\/shimano-rt-cl800-ultegra-cl-800-disc-brake-rotor","provider":"WATTS LAB ","version":"1.0","type":"link"}