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, low-speed 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)