The Contact Switch Core dropper seatpost is built for long-lasting reliable performance with its robust construction and durable spring-activated internals. 100mm and 125mm travel options make it perfect for any rider seeking to conquer more technical trails. Re-designed chassis for stability and minimal lateral play. Anti-twist technology keeps the saddle firmly positioned. Fully extended or fully compressed positions. 100 and 125mm travel options. Durable mechanical spring action. Internal cable routing. Extra-long lower saddle rail guide cradles saddle rails securely. Two-bolt clamp design for maximum adjustability. Ergonomic thumb control lever. Material: 6061 Alloy Diameter: 30.9mm Travel: 100mm / 125mm Length: 100mm: 350mm / 125: 400mm Weight without remote and cable: 100: 440g / 125mm: 490g Please note the outer cable is not included you will require outer gear cable.