This air shocks are universal parts. Can be used on most 150cc-750cc Sport bikes, Dirt bikes, Go-kart, ATV, UTV, Moped Quad, Street bike and so on. Suitable for motorcycles, ATV, quads with shocks of 340mm eye to eye distance. This shocks was already filled with nitrogen gas in the factory, you are able to change the shock power by adjust the air reservoir. Easy installation. Instruction is NOT include. Package Include: 1 Pair 340mm shock absorbers. 13 3/8″ 340mm 2pcs Air Shock Absorber Specification: Condition:100% Brand New Color: As the Pictures Shown Internal Copper Sleeve Size: 12mm Size and Quantity of External Copper Sleeve: 2*10mm Spring Diameter:about 9mm Spring Width:about 64mm Total Length: the Distance from Hole to Hole Plus 30MM Length of Eye to Eye Core: 340mm Adjustment Tool: 2*wrench Placement on Vehicle: Rear Features: *Made of high quality material,ensure maximum strength and durability for long lasting usage. *Ensure the comfort when riding. *No inst