For over 20 years, Thudbuster has been the industry standard in suspension seatposts by providing unequaled comfort and reliability to riders around the world. We are now proud to announce the latest evolution to that legacy with the Thudbuster Generation 4 (G4).The new 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. Key Features: Travel: 90mm (3.54\"),Seatclamp: Single bolt fastening and angle adjustment design,Elastomer: 2-piece design, tool-free inner elastomer change for various rider weight,Pivots: Threaded, serviceable, hard anodized aluminum axles flanged PTFE bushings,Rider Weight Limit: 115kg/250lb,Sizes: 27.2mm, 30.9mm, 31.6mm (additional diameters available with shim),Length: 420mm (30.9 & 31.6), 390mm (27.2),Extension: Minimum - 146mm, Maximum - 320mm (30.9 & 31.6) / 290mm (27.2),Weight: 750g (31.6mm) .