Cane Creek Thudbuster G4 Seatpost Now With Fewer Thuds Dirt, gravel roads, and even a lot of pavement can be rough on you while you're riding. Luckily there are ways to mitigate these rough patches. The Cane Creek Thudbuster G4 Seatpost is completely redesigned for increased durability, a higher rider weight limit, additional suspension travel, as well as ease of use through tool-free elastomer change and a single-bolt seat clamp design. Features Designed for E-Bikes, gravel riding, and daily commuting Medium-firm elastomer pre-installed from the factory Additional suspension travel and tool-free elastomer change SPECIFICATIONSDiameter27. 2, 30. 9, 31. 6mm Length390mm Offset5mm Material Aluminum Intended Use E-bike, Commuting, Gravel, MTBWeight750g | Cane Creek | Thudbuster G4 Seatpost 27. 2 Blk Long Travel | Aluminum