pair of rear motorcycle shock absorbers, made of quality aluminum and stainless steel;Pressure can be adjusted by springs or air (gen); Operation of the coil-over springs and air cylinder is helpful to reduce the shock.Shock Absorber bottom/ends type: Straight ForkNo instruction included, professional installation recommended.Universal fit for most 340mm Motorcycle Shock Absorber For Honda/Yamaha/Suzuki/Kawasaki;Dirt bikes, Gokart, ATV, Motorcycles and Quad.Item Specific : Condition: Brand new Color: As picture show Material: Solid Steel + Aluminum Alloy Installation Type: Clevis/Straight Fork Fitment: Universal Fit. Work perfectly and will be compatible on most 50cc, 75cc, 90cc, 125cc, 150cc, 250cc, 300cc Street bikes, Dirt bikes, Gokart, ATV, Motorcycles and Quad Total Length:370mm (14.5″)Length of Eye to Clevis Eye Core:340mmEye Diameter(with bushing): 12mmEye Diameter(with bushing removed): 16mmClevis Maximum Tensile Strength: 2,000 KgfSpring Thickness: 8mmSpring Width: 60mmWork