Whether you're touring across the city or planning your next drop bar gravel bike adventure, this suspension seatpost is engineered for smooth and dependable performance. It features a hard-wearing forged aluminium build, which gives it excellent toughness when travelling across mixed terrain conditions. Suitable for a wide range of riding disciplines, this model is also compatible with electric bikes (E-bikes). Bolt-On Comfort For over 20 years, Thudbuster has been the bicycle industry-standard in suspension seatposts by providing unequalled comfort and reliability to riders around the world. Suspension Seatpost The latest generation Thudbuster LT is superior to its predecessor in every way.  Building on Thudbuster’s proven parallel linkage technology we have completely re-designed the seatpost for increased durability, additional suspension travel, as well as ease of use through tool-free elastomer change and a single-bolt seat clamp design. By improving on this already legendary design, we’re confident to say that the newest generation Thudbuster is the most advanced suspension seatpost ever made. Parallel Linkage Design The Thudbuster Parallel Linkage technology stays in the direct path of the natural travel of the rear wheel. As a bump lifts the back of a bicycle, the rear wheel pushes up and forward into the rider. The Thudbuster works by compressing along the exact opposite path — down and rearward — absorbing force at the same rate. This results in a natural suspension feel without being overly active and allows for more travel without compromising pedalling position. Manufacturer's Part Number: SP7A309 Black 30.9mm 90mm Travel SP7A316 Black 31.6mm 90mm Travel SP7A272 Black 27.2mm 90mm Travel