Propel Advanced 1

The Giant Propel Advanced 1 is a high-performance carbon aero road bike engineered for maximum velocity and competitive efficiency. For 2027, this model arrives in a sleek, minimalist Carbon finish, featuring an Advanced-grade composite frameset that has been reengineered to be lighter and stiffer than previous generations. Built using Giant’s AeroSystem Shaping technology, every tube and angle is optimized via CFD analysis and wind-tunnel testing to minimize drag, ensuring that every watt of pedalling power translates into pure, sustained speed.

This 2027 iteration is centered around the Shimano 105 Di2 12-speed electronic groupset, providing lightning-fast, wireless shifting and a wide gear range thanks to its updated 11x36T cassette. Beyond its raw speed, this generation focuses on refined ride quality; the frame now offers an expanded 32mm tire clearance, allowing for higher-volume rubber that smooths out rough road surfaces and reduces fatigue during long solo breakaways or intense group rides. With its integrated cockpit and 50mm deep carbon wheels, it is a "stealth" race machine designed to dominate sprints and rolling terrain alike.

Frameset & Geometry

Frame: Advanced-Grade Composite, 12x142mm thru-axle, Disc, UDH Interface

Fork: Advanced-Grade Composite, full-composite OverDrive Aero steerer, 12x100mm thru-axle, Disc

Handlebar: Giant Contact SL Aero (Lightweight aluminum with aero profiling)

Stem: Giant Contact SL Aero, 10-degree (Integrated cable management)

Seatpost: Giant Vector, Composite, -5/+15mm offset

Saddle: Giant Fleet SL

Colour: Carbon / Stealth Chrome

Drivetrain & Brakes

Shifters: Shimano 105 Di2 ST-R7170, 2x12-Speed (Electronic)

Front Derailleur: Shimano 105 Di2 FD-R7150

Rear Derailleur: Shimano 105 Di2 RD-R7150, 12-Speed

Crankset: Shimano 105, 36/52T

Bottom Bracket: Shimano, press fit (BB86)

Cassette: Shimano 105, 12-speed, 11x36T

Chain: KMC X12L-1

Brakes: Shimano 105 hydraulic, RT-CL700 rotors (160mm front / 140mm rear)

Wheels & Tires

Wheelset: Giant SLR 2 50 Carbon Disc WheelSystem, 50mm depth (Tubeless Ready)

Tires: Giant Gavia Course 0, tubeless, 700x28c (folding)

Max Tire Clearance: 32mm

Key Technologies

AeroSystem Shaping: Truncated ellipse airfoil tube shapes and a unified system design (including specific aero bottle cages) significantly reduce drag at various wind angles.

Shimano 105 Di2: Offers the precision of electronic shifting with a simplified setup, featuring a clutched-style rear derailleur for secure chain management and effortless gear changes under load.

OverDrive Aero: The D-shaped steerer tube and matching spacers provide a sleek, internal cable routing system that is more aerodynamic than traditional setups while remaining easier to adjust than fully integrated cockpits.

Sustained Compliance: The reengineered Vector seatpost and composite fork are designed to absorb road vibrations, which, when paired with the new 32mm tire clearance, makes this one of the most comfortable aero bikes in its class.