By adding the Thudbuster LT rear suspension you'll ride faster, longer, and stronger with better traction, more control, and less fatigue. The performance, relative low weight, and simplicity make it the best suspension upgrade you can make to your hardtail. Based on a patented parallel linkage design, the Thudbuster LT provides up to 3 inches of active stiction free travel. Unlike telescoping suspension posts, there is no initial stiction to overcomethe suspension mechanism works in the direct path of the natural travel of the rear wheel. The elastomers provide the compression and rebound damping, and can be easily exchanged to tune the suspension. maximum rider weight: 250 lbs. extension: minimum: 142mm. extension: maximum 300 mm 346 mm 27.2 xl version.