Equipment > Accessories > Drivetrain Misc / Small Parts > Seatpost
Description
Some carbon, steel, and titanium bikes are made with an integrated seatpost (ISP) design. These systems have an extension above the toptube that take the place of a seatpost and require a mount system that allows the rider to install a saddle. Hence, the Ritchey WCS Seat Mast Topper, a set-up developed for specific outside diameter round extended seattubes. Ritchey has offered this system in 3 sizes, and it is currently available for 30.25mm and 34.9mm round OD masts.
The seatpost comes with a standard 1-bolt clamp to fit all 7x7 rails and Ritchey does offer clamp kits for all other rail diameters/shapes. Please be sure to use the correct size for each saddle or you may experience slippage.
Return to TopFeatures
- ISP-style seat mast topper for round seattube extensions, featuring Ritchey's single-bolt rail clamp design
- Material: 2014 Alloy
- Total length (for tube depth): 70mm (minimum insertion: 32.5mm
- Offset: 25mm (30.25mm and 34.9mm diameters)
- Single seat collar bolt design
- Saddle clamp: 7x7mm round saddle rails (simple clamp plates options sold separately for oval rails)
- Torque specs: Saddle clamp 12Nm (max) / Seat collar torque: 5Nm (max)
- Offset: 25mm (30.25mm and 34.9mm diameters)
- Diameter options: 30.25mm 34.9mm
- Color: High-polish black, WCS logo
- Weight: 116 grams (30.25mm/25mm offset)