Aero BTS saddle clamp in black, three-quarter view

Aero BTS Saddle Clamp

€149,95

Saddle type

30-day returns
2-year warranty
Crash replacement

The saddle-specific carbon clamp that mounts the Aero BTS cup to your saddle. Each variant is tooled to the exact rail geometry of a specific saddle model — not a universal adapter — so it sits securely and stays in position under race loads.

Central carbon rod — maximum stiffness, minimal flex from start to finish
Saddle-specific moulding — tooled to your saddle's rail geometry
Compatible with both the Aero BTS cup and the Aero BTS PRO cup
17 fits covering 19 saddle models — select below

Made in DenmarkDeveloped and produced in-house

Two-year warrantyAnd 30 days to return it

Crash replacement

Fit questions answeredSend us your bike model

Part of the Aero BTS system

Everything else on your bike is in the wind. This isn't.

5.3W

Median saved by the Aero BTS PRO at 45 km/h, against riding with no bottles. 25 riders on the Ballerup velodrome; up to 14 W at best.

See the Aero BTS PRO →

Power saved at 45 km/h against no bottles, median

One bottle below the saddle

−1 W

Two bottles close together

3.3 W

Aero BTS PRO25 riders

5.3 Wbest 14

Bars: median · faded: best measured rider

Details

Saddle-specific, not universal

Behind-the-saddle systems fail in two ways: the mount moves under load, or the universal fit leaves it sitting poorly on the saddle rails. The Aero BTS Carbon Saddle Clamp avoids both by tooling a specific mount to the rail geometry of each supported saddle. If your saddle is on the list, the clamp wraps it correctly — not approximately.

Carbon-rod core

The clamp is built around a central carbon rod. Carbon provides maximum stiffness under race loads and dampens road vibration without the progressive flex that causes plastic and alloy mounts to creep over a long-distance effort. What you set at the start line stays in position at the finish.

Compatibility

Compatible with both the Aero BTS cup and the Aero BTS PRO cup. Select your saddle model from the variant list. Currently available for Wove V8, Gebiomized Stride, Prologo T Galle TT CPC, Prologo Dimension CPC Nack 143 (carbon rails), Prologo Dimension CPC Tirox 143 (alu rails), ISM PN3.0 and PN3.1, ISM PN4.0, Specialized Sitero, Dash Integrated Seatpost, Selle Italia Watt Superflow, Selle Italia Watt Superflow (black rails), Selle Italia Watt Superflow 3D, Fizik Transiro Aeris, Fizik Tritone, PRO Stealth Team, PRO Aerofuel, and Bontrager Hilo Pro and Hilo Comp. New saddle fits are added based on community votes — follow us on Instagram.