The Bontrager RSL (Race Shop Limited) Seatpost is an ultra-lightweight, top-tier carbon seatpost engineered for competitive road, gravel, and mountain bike setups.
Constructed entirely out of premium OCLV carbon fiber, it maximizes vertical vibration compliance while preserving lateral stiffness.
Key Specifications & Layout OptionsDiameter Variants: Available in a standard 27.2 mm profile (geared towards road, gravel, and cross-country compliance) as well as a thicker 31.6 mm profile optimized for maximum durability on mountain bike frames.
CnD Shape Profile: The 27.2 mm edition features a specialized flat-sided “CnD” cross-section that explicitly dampens harsh road vibrations without sacrificing lateral control.
Clamping System: Implements a micro-adjustable, rock-solid 2-bolt head design that allows riders to make independent saddle pitch and setback corrections (+/- 12 degrees) without slipping.
Rail Compatibility: Comes standard with 7×10 mm oversized carbon rail clamps built directly into the kit, whereas standard 7×7 mm round rail ear adapters are sold separately