OneUp Components

V2 27.2 Dropper Post Rebuild Kit

OneUp Components V2 27.2 Dropper Post Rebuild Kit refreshes the wear parts that most directly affect smooth travel, side-to-side play, and return speed on compatible OneUp V2 droppers. It’s the right service kit when a post needs new seals and bushings rather than a full replacement, with an updated option that reduces friction for a cleaner feel through the stroke.

• Complete V2 rebuild parts - Includes the key wear items to rebuild a V2 dropper: replacement seal, upper and lower bushings, and anti-rotation pins
• Updated V2.1 midcap option - V2.1 kits add an improved midcap assembly with ultra-low friction SKF seals plus the upper/lower bushings and anti-rotation pins for smoother actuation
• Anti-rotation pins - Restores secure saddle clamp alignment by preventing the post head from twisting under load
• Slow top-out troubleshooting - OneUp reports most slow-return issues are caused by low air pressure; check pressure with the post fully extended and set to 280–300 psi (valve located under the top clamp)
• Upper bushing wear indicator - If slow top-out persists, the upper white bushing may need replacement; a common sign is the original bushing being difficult to reinstall after removal