This replacement saddle clamp assembly secures the saddle rails at the seatpost head on compatible X-LAB bikes. Choose the clamp that matches your saddle's rail dimensions: the round 7 × 7 mm alloy-rail version and oval 7 × 9 mm carbon-rail version use different rail profiles.
Choose your rail size
7 × 7 mm – Alloy rails: for round alloy saddle rails. The assembly has a laser-etched alloy-rail mark.
7 × 9 mm – Carbon rails: for compatible oval carbon saddle rails measuring 7 × 9 mm.
Bike compatibility and hardware
X-LAB lists both assemblies for the RS5, AD8, AD9, RS7, RT9 and GT8. Each assembly includes fixing bolts: left M6 × 23 mm and right M6 × 46.5 mm.
Mechanic's fit advice
Match both the seatpost head and saddle rail profile before ordering. A clamp for round rails should not be substituted for the oval carbon-rail version. Follow the saddle and seatpost manufacturers' torque limits and rail clamping marks when setting saddle position.
