One Up Components Dropper Post V2. 1 Rebuild Kit Drop It Like It's Hot The V2. 1 Dropper Rebuild Kit is an updated rebuild kit for the One Up V2 Dropper Post, featuring a redesigned mid cap assembly and new ultra-low-friction SKF(R) seals. Replacing all the included parts during a rebuild produces a noticeable improvement in dropper action, taking a post with sticky spots or side-to-side play back to nearly new condition. Features Updated mid cap assemblywith new ultra-low-friction SKF(R) seals for smoother actuation Restores smooth return and eliminates playin a well-used One Up V2 dropper post Easy, hassle-free installationfor a straightforward at-home upgrade or service Designed specifically for the One Up V2 Dropper Post SPECIFICATIONSIntended Use One Up Dropper V2 Service and Maintenance Included Updated mid cap assembly with SKF(R) low-friction seals Compatibility One Up Dropper V2 | Oneup Components | Dropper Post V2. 1 Rebuild Kit For 30. 9/31. 6/34. 9 Seatposts | Aluminum