The ultimate starting point for a world‑class aero race build.
The 2025 Giant Propel Advanced SL Frameset in
Cosmic Dust is engineered for riders who want to build a truly elite aero race machine from the ground up. As the flagship chassis in the Propel lineup, it delivers the lightest, stiffest, and most aerodynamically efficient platform Giant has ever produced — the same frameset used by WorldTour professionals.
Crafted from Giant’s highest‑grade Advanced SL composite, the frameset uses continuous‑fibre layup and one‑piece moulding to maximise stiffness‑to‑weight performance. Every contour is shaped using AeroSystem Shaping Technology, producing truncated‑ellipse tube profiles optimised for real‑world airflow. The result is a frameset that slices through the wind, responds instantly to power, and remains stable in turbulent conditions.
Integrated seatmast for pure race efficiency
The Propel Advanced SL features Giant’s signature integrated seatmast, reducing weight and improving aerodynamic flow while enhancing ride compliance. It’s a defining feature of the SL platform — one that delivers a pro‑level fit and unmistakable race‑bike silhouette.
Fully integrated cockpit for clean, efficient airflow
Designed around Giant’s integrated aero handlebar and stem system, the frameset offers seamless cable routing and a sleek, drag‑reducing front end. The geometry blends aggressive race positioning with long‑distance efficiency, making it ideal for crits, road races, and high‑speed endurance events.
Aero engineering at its highest level
From the fork crown to the rear triangle, every millimetre of the Propel Advanced SL is optimised for speed. The oversized bottom bracket area maximises power transfer, while the deep‑section aero fork and dropped seatstays reduce drag and improve stability. It’s a frameset built for riders who want nothing less than pro‑level performance.
Cosmic Dust: iridescent, premium, and unmistakably fast
The Cosmic Dust colourway gives the frameset a shimmering, multi‑layered finish that shifts subtly under changing light. Metallic gradients highlight the sculpted aero lines, creating a look that’s futuristic, refined, and built to stand out on the start line.
Frameset Highlights
- Advanced SL‑grade composite frame and fork
- Integrated seatmast for maximum stiffness and aero efficiency
- AeroSystem Shaping Technology
- Fully internal cable routing
- Oversized bottom bracket for optimal power transfer
- Tyre clearance: up to 32mm