TTX2 refers to two air chambers meaning greater air volume. Provides a more linear spring rate Trunnion mount: the linkage bolts directly to the sides of the cylinder head TTX Twin tube design for consistent damping performance on all types of terrain Extra bushing overlap for improved side load management Specific wiper seal and air sleeve lubrication reduce friction External rebound, lowspeed and high-speed compression adjustment Climb mode to reduce suspension movements during climbs Includes (2) air spring volume spacers to reduce travel 2.5mm or -5mm Mounting hardware sold separately (spherical bearings reduce friction on the shock during side loads for improved small bump sensitivity, optional on widths up to 22mm)