Key takeaways

• Ridley Elite Carbon frame with aero tube shapes (F-Tubing, F‑Surface Plus) and fully internal routing via F‑Steerer.
• Dedicated Kanzo Fast Aero cockpit and D-shaped seatpost to filter vibrations.
• 1x-only design, with internal routing and mudguard compatibility (mounts provided).
• Chainstay length fixed at 425 mm across all sizes; geometry aimed at high-speed stability.
• This build uses Shimano GRX 12-speed (1×12). Other configurations are available in the range (SRAM XPLR, Classified Powershift).
• Sizes XS to XL. Listed price: €4,499.

Frame and integration

The Kanzo Fast borrows the aero cues already seen from Ridley (NACA profiles, F‑Surface Plus treatments) and pairs them with deep integration: F‑Steerer for fully internal routing, a dedicated aero cockpit and clean junctions. Very low seatstays, combined with a D-shaped seatpost, aim to deliver a measure of vertical compliance without giving up the lateral stiffness you want on a gravel race bike.

The frame is stated as “1x only”: the platform is designed for single-chainring drivetrains, with optimised internal routing. Mudguard mounts are provided.

Geometry: key figures

The numbers confirm a race focus with a contained wheelbase and short stays for snap, while keeping moderate angles for stability on fast sections.

• Chainstays (G): 425 mm on all sizes.
• Head angle (F): 71–72° depending on size.
• Seat tube angle (E): 72.5–74.5° depending on size.
• Wheelbase (I): ~1001 to 1053 mm (XS to XL).
• Stack (S, mm): 537 (XS) to 638 (XL) – Reach (R, mm): 373 (XS) to 400 (XL).
• Bottom bracket (H): drop ~70–74 mm.

In practice: 425 mm chainstays and a sensible, size-proportional reach point to a responsive bike, with stability maintained by angles that are neither overly slack nor overly steep, and a wheelbase that grows logically with size.

Clearance and components

Ridley highlights tyre clearance tailored for gravel (“Kanzo Specific Tire Clearance”). No figure is quoted here, but the platform targets faster, race-oriented tyre widths. The aero cockpit and internal routing prioritise aerodynamic efficiency and a tidy front end; the usual trade-off is tighter accessory compatibility and maintenance that demands following the integration procedure.

Drivetrain and build options

This configuration adopts Shimano GRX in 12-speed (1×12). The single-chainring choice suits the intended use: simplicity, optimised chain tension and ergonomics for changing terrain. For riders who also go fast on the road or want a wider range, Ridley’s configurator offers other options (SRAM XPLR, Classified Powershift) to tailor the gearing.

What is it for?

An unapologetic gravel race bike, built to hold high speeds on rolling tracks, dirt roads, tarmac sections and competitive formats (gravel races, time trials, fast-paced rides). The 1x platform, deep integration and aero cockpit will suit riders who prioritise efficiency and mechanical simplicity. For loaded bikepacking or very large tyres, it’s worth checking tyre clearance and the available mounts and carrying options for your intended use.

Our view

The Kanzo Fast sits among today’s aero‑gravel bikes (3T Exploro Racemax, Cervélo Áspero, Factor Ostro Gravel, etc.): efficiency first, full integration and speed-oriented geometry. The 425 mm stays and moderate reach promise a lively bike without becoming twitchy. The “1x only” constraint is coherent for gravel racing; those doing long, fast road links will appreciate options like Classified to extend the useful range. Tyre clearance remains an open question here, with no figure quoted: worth checking if you plan widths above ~45 mm or very rough terrain. At €4,499 with GRX 12-speed, the build sits squarely in the high-end race segment, with the advantage of neat integration and a clear performance focus.