Giant 2027 Propel Advanced 1 – Shimano 105 Di2

Product Overview

Instant speed. Sustained speed. Top-end speed. The aero road machine reengineered to make the thrill of road speed accessible to all.

The 2027 Propel Advanced 1 is the fourth generation of Giant's legendary aero road platform—completely reengineered as a unified system to deliver the perfect balance of top-end speed, instant acceleration, and sustained efficiency. Whether you're squeezing out more speed on solo rides or taking bragging rights in the group, the new lighter, smoother Propel Advanced makes the thrill of road speed accessible to all.

Built around an Advanced-grade Composite frameset with AeroSystem Shaping technology, this bike is faster, smoother, and more efficient than ever. The frameset is lighter than the previous generation with greater torsional and pedaling stiffness, so you feel instantaneous reaction when you make your move. With Shimano's 105 Di2 electronic shifting, 50mm carbon wheels, and tyre clearance up to 32mm, the Propel Advanced 1 is the perfect entry into world-class aerodynamic performance.

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Key Features

🏆 AeroSystem Shaping – Proven in the Wind Tunnel

• Strategically engineered airfoil sections use truncated ellipse tubing to more effectively reduce drag compared to traditional teardrop shapes

• Developed and proven through CFD modeling and wind-tunnel testing across a wide range of yaw angles

• Frame, cockpit, wheels, and tires form a unified system that lowers total resistance at high speeds

⚡ Instant Speed – Explosive Acceleration

• Frameset is lighter than the previous generation with greater torsional stiffness and pedaling stiffness

• You feel instantaneous reaction when you launch an attack or sprint for the line

• Advanced-grade composite front triangle assembled and molded as one continuous piece via Modified Monocoque Construction

💨 Sustained Speed – Smooth, Fatigue-Free Ride Quality

• Vector seatpost offers greater compliance compared to the previous generation

• Composite fork and integrated cockpit absorb bumps and vibrations up front

• Tyre clearance up to 32mm — run high-volume tires for further comfort and speed with less fatigue

🔧 Integrated Aero Cockpit

• Giant Contact SL Aero integrated composite handlebar/stem unit

• Aero shaping with flat handlebar tops and raised edges to help maintain a stable aero position

• Internal cable routing improves aerodynamics while maintaining ease of setup and adjustment

🛞 Giant SLR 2 50 Carbon Disc WheelSystem

• 50mm deep composite rims engineered with proprietary Dynamic Balanced Lacing technology

• Delivers superior efficiency, pinpoint control, and supreme aerodynamics

• Paired with Giant Gavia Course 0 tubeless tires in 700x28c for reduced rolling resistance

🛠️ OverDrive Aero – Easy Service, Hidden Cables

• D-shaped fork steerer tube and corresponding spacers provide an extremely aerodynamic, easy-to-service system of internally routed brake and derailleur cables

🎯 Internal Cable Routing – Clean and Adjustable

• Frame, handlebar, and stem designed with ports and channels to keep cables hidden from the wind while allowing for easy adjustability

🍶 Aero Bottle Cages – Integrated Drag Reduction

• Custom-engineered down tube and seat tube specific bottle cages help reduce overall aerodynamic drag

🔩 Shimano 105 Di2 Electronic Shifting

• Semi-wireless 12-speed electronic shifting — the gateway to Di2 performance

• Front derailleur: Shimano 105 Di2

• Rear derailleur: Shimano 105 Di2

• Cassette: Shimano 105, 12-speed, 11-36T

• Crankset: Shimano 105 Di2, 36/52T with crank length options by size

• Chain: KMC X12L-1

🛑 Shimano 105 Di2 Hydraulic Disc Brakes

• Shimano 105 Di2 hydraulic disc brakes with Shimano RT-CL700 rotors

• Rotor sizes: 160mm front / 140mm rear for confident, consistent stopping power

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Specifications

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Geometry & Sizing

Sizing to be used as a reference only. Please check with a local authorized Giant dealer to determine the correct size.

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What's in the Box

• Giant Propel Advanced 1 Complete Bike × 1

• Giant SLR 2 50 Carbon Disc WheelSystem (Front + Rear)

• Giant Gavia Course 0 Tubeless Tires × 2 (700x28c)

• Giant Contact SL Aero Integrated Handlebar/Stem

• Giant Vector Composite Seatpost

• Giant Fleet SL Saddle

• Tubeless sealant (pre-installed)

• Pedals not included

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Why Choose the 2027 Propel Advanced 1?

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Technical Notes

⚠️ Pedals: Not included — purchase separately according to your preference

⚠️ Wheelsystem: Ships with tubeless tires pre-installed. Sealant may need to be added or refreshed periodically

⚠️ Crank Length: Determined by frame size — XS/S: 165mm · M/M-L: 170mm · L/XL: 172.5mm

⚠️ Handlebar Width: Determined by frame size — XS/S: 380/360mm · M/M-L: 400/370mm · L/XL: 420/390mm

⚠️ Bottom Bracket: Shimano press fit — compatible with Shimano 24mm cranks

⚠️ Tyre Clearance: Fits tires up to 32mm — ideal for balancing aerodynamics with comfort on rough roads

⚠️ Warranty: Giant's lifetime frame warranty applies to the original purchaser

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About Giant

Giant is the world's largest bicycle manufacturer, founded in 1972 in Taiwan. With over 50 years of engineering heritage, Giant designs and builds bicycles for every discipline—from WorldTour racing to everyday commuting. The Propel represents the pinnacle of Giant's aerodynamic road engineering, proven at the highest levels of professional racing. Every Propel Advanced frameset is manufactured in Giant's own composite factory, ensuring complete control over quality, precision, and performance.