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 375mm 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 375mm shock absorbers. Universal 375mm Motorcycle Air Shock Absorber Suspension 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: 9mm Total Length: the Distance from Hole to Hole Plus 30MM Length of Eye to Eye Core: 375mm Adjustment Tool: 2*wrench Placement on Vehicle: Rear Features: Made of high material,ensure maximum strength and durability for long lasting usage. Ensure the comfort when riding. No instruction included, professional installation is recommended. Fitment: Universal fit for most Motorcycles. Please check the size before you order. Package Included: 1pair Motorcycle Shock Absorber