Redesigned from the ground up, X2 is still the most tunable Enduro/DH air shock. 4-way adjustable for high and low speed rebound and compression. Mono tube architecture is more durable, offer greater usable tuning range. Pressure balanced tuning for increased support without harshness. 2-position open/firm platform toggle with detents . Variable control valve (VVC) on high speed rebound. Oversized Evol air chamber provides a more linear, planted ride feel . Factory Series with slippery smooth, ultra-durable Kashima coating. Mounting hardware sold separately . Eyelet/air-sleeve configurations https://tech.ridefox.com/bike/general-info/675/shock–eyelet-and-air-sleeve-information