Trek-compatible seat mast cap Offered in white and black and a variety of lengths and offsets, the mast cap includes hardware compatible with round saddle rails only. 7x10mm carbon rail-compatible hardware sold separately. Key features: - Ultra-light carbon construction - One bolt head design offers easy fore-aft and infinite angle adjustment - Compatible with all Trek road bikes with round seat masts - 175mm and 135mm lengths - 5mm and 20mm offsets - Aluminum clamp

- RaceFace Ride XC Seatposts made of forged AL-6061 - Forged, anodized and shot peened AL-6061 mast - 2-bolt head holds saddle securely while retaining easy adjustability - Weight: 295 g

- 6061 cold forged aircraft grade aluminum alloy clamp - Cold drawn 6061-T6 extruded outer tube and inner shaft - The spring preload is easy to adjust with a single hex wrench, to fit the rider's weight - The slider rests on Teflon bushings, for a smooth, effortless operation - Travel: 40mm

- Alloy seatpost with alloy bracket - Length: 400mm - 20mm offset

- Straight-gauge 6061-T6 alloy shaft construction - 2-bolt rocker-head with micro-adjustment - Suitable for road or mountain use

The Elite seatpost is a distilled design guaranteed to deliver reliable everyday performance for years to come. Perfect as a replacement or your next upgrade. With an alloy body and a 2-bolt micro adjust head, this seatpost is available in a slew of diameters, lengths, and offsets to get you the right position. Key features: - 2-bolt micro-adjust head mechanism offers 15 degrees of adjustment - Constructed of 2014 alloy - Forged 6061-T6 alloy head, top and bottom clamps - Unique clamp shape allows for easy saddle changes - Compatible with standard and oversize carbon saddle rails - Suitable for road or mountain use

A streamlined design with fewer moving parts and better seals makes for a dropper post that performs consistently and requires less maintenance. The updated Bontrager Line Dropper Post is easy to set up and now even easier to service. The cable-actuated hydraulic locking design provides proven functionality for bikes with internal routing. - Remote cable actuation with ergonomically designed under-bar lever - Air-sprung hydraulic locking cartridge offers infinite adjustability within dropping range - Keyed chassis prevents rotation for a stable ride - 2-bolt rocker head with micro adjustment allows for easy saddle tilt adjustment - Internal cable routing keeps housing tucked away and free from moving wheel - Includes cable, housing, and 1x under-bar remote lever - On-Bar Drop Line Universal Lever sold separately - Frame must be compatible with internally routed seatpost routing

A performance dropper post with MaxFlow technology for faster, smoother operation. The Line Elite 31.6 Dropper is easy to set up and easier to drop, with 20% less saddle force required. Avid Matchmaker and Shimano I-Spec II compatibility ensures simple, integrated setup and the included lever provides a great feel with an easy push. Length options from 100mm to 170mm travel ensure there is a size for your ride. Designed for bikes with internal frame routing. - Infinitely adjustable air-sprung hydraulic locking cartridge with 20 percent reduction in compression force - MaxFlow design allows for a faster return and less compression force - Travel inserts available in 10mm and 30mm sizes to fine tune travel and rider fit - Cable-actuated under-bar lever compatible with SRAM MatchMaker and Shimano I-Spec II - 2-bolt rocker head with micro adjustment allows for easy saddle tilt adjustment - Internal cable routing keeps housing tucked away and free from moving wheel - Includes cable, housing, and 1x under-bar remote lever - On-Bar Universal Lever sold separately

A performance dropper post with an larger 34.9mm diameter and updated design with MaxFlow technology for faster, smoother operation. The Line Elite 34.9 Dropper is easy to set up and easier to drop, with 20% less saddle force required. Avid Matchmaker and Shimano I-Spec II compatibility ensures simple, integrated setup and the included lever provides a great feel with an easy push. Length options from 100mm to 200mm travel ensure there is a size for your ride. Designed for bikes with 34.9mm seatpost compatibility. - Infinitely adjustable air-sprung hydraulic locking cartridge with 20 percent reduction in compression force - MaxFlow design allows for a faster return and less compression force - 34.9mm diameter adds strength and durability while reducing side-play and stiction - Cable-actuated under-bar lever compatible with MatchMaker and Shimano EV - 2-bolt rocker head with micro adjustment allows for easy saddle tilt adjustment - Internal cable routing keeps housing tucked away and free from moving wheel - Includes cable, housing, and 1x under-bar remote lever - On-Bar Universal Lever sold separately

Our lightest seatpost ever The RSL 31.6 Seatpost is a strong, light, and compliant OCLV Carbon seatpost with a 2-bolt clamp that offers secure, no-slip saddle positioning for mountain bikes. Designed for weight-savings and durability, the RSL 31.6 Seatpost is makes the ultimate upgrade for any ultra-light race bike. An ultralight OCLV Carbon seatpost with a 31.6 diameter and 2-bolt clamping head that offers easy-to-set, secure, slip-free saddle positioning. - 100% OCLV Carbon fiber shaft, head, and plates - Lightweight titanium hardware - 2-bolt micro-adjust head mechanism offers 15 degrees of adjustment - Unique clamp shape allows for easy saddle changes and adjustments - Compatible with standard and oversize carbon saddle rails - Suitable for road or mountain use