Bontrager RSL 31.6 seat post An ultra-lightweight OCLV Carbon seatpost with 31.6mm diameter and 2-bolt clamp for easy, secure and non-slip saddle positioning. Bontrager's lightest seat post ever The RSL 31.6 is a robust, lightweight and compliant MTB seat post made from OCLV Carbon with a 2-bolt clamp that allows for secure, non-slip saddle positioning. The light and robust RSL 31.6 seat post is the ultimate upgrade for any ultralight race bike. Product details Shaft tube, head and clamping plates made from 100% OCLV Carbon Lightweight titanium screws Micro-adjustable 2-screw clamp with a 15 degree adjustment range Unique clamp shape for easy saddle replacement and quick adjustments Compatible with traditional and oversized carbon seat rails Suitable for use on racing bikes or MTBs Size 31.6mm x 330mm x 0mm 31.6mm x 400mm x 0mm outer diameter 31.6mm 31.6mm length 330mm 400mm offset 0mm 0mm Seat stay compatibility Universal Universal material Carbon Carbon Weight (manufacturer’s information) 157g 169g Original part number: 5255974 - 330mm 5255975 - 400mm Item type: NEW ITEM - Dismantled from a new bike - without original packaging. May contain traces of disassembly/assembly - with full manufacturer's warranty from the date of purchase and invoice including 19% VAT. The product shown may differ from the product actually delivered