Universal Fit. Nitrogen reservoir: YES Shock strength adjustable. Fit on most 150cc~750cc Sport bikes and Dirt Bikes, Go-kart and Moped Quad. Fit bikes with shocks of 320mm eye to eye distance. Please check the size details and make sure it will fit your bike before purchase. Other size please check product description for your reference. Color:320mm Black Silver Condition: Brand new/Never used GZYF 320mm 12.59″ A Pair Rear Nitrogen Shock Absorbers Fit Kawasaki Black & Silver Color: As picture show Material: Solid Steel+Aluminium Alloy Installation Type: Eye to Eye Fitment: Universal Fit. Work perfectly on most 150cc~750cc street bikes, Karting(Go kart), Scooters and Moped Quad (ATV) with shocks of 320mm eye to eye distance. Great choice for replacement, style upgrading and all kinds of bike modification. Dimension: Total Length: 350mm (13 3/4″) Length of Eye to Eye Core: 320mm (12 5/8″) Eye Diameter(with bushing): 12mm Eye Diameter(with bushing removed): 16mm Eye Thickness: