Fit on most 150cc~750cc Sport bikes and Dirt Bikes, Go-kart and Moped Quad Universal compatible for Honda/Yamaha/Suzuki/Kawasaki, the diameter of the round hole at the bottom is 12mm, and the length between holes to hole is 340mm Absorber shock promptly in the clumpiest road to improve and make you feel more comfortable No instruction included, professional installation recommended. Installation type: Eye to Eye Please check the size details and make sure it will fit your bike before purchase Color:SilverBlack | Size:340MM Motorcycle shock absorber universal fit for most vehicles, like Honda/Yamaha/Suzuki/Kawasaki, etc Fit on most 150cc~750cc Sport bikes and Dirt Bikes, Go-kart and Moped Quad Universal compatible for Honda/Yamaha/Suzuki/Kawasaki, the diameter of the round hole at the bottom is 12mm, and the length between holes to hole is 340mm Absorber shock promptly in the clumpiest road to improve security and make you feel more comfortable No instruction included, professional installation recommended. Installation type: Eye to Eye Dimension:Total Length: 370mm (13.78″)Length of Eye to Eye Core: 340mm (12.59″)Eye Diameter(with bushing): 12mmEye Diameter(with bushing removed): 16mmEye Thickness: 21mmEye Maximum Tensile Strength: 2,000 Kgf Spring Thickness: 7mmSpring Width: 60mmWorking Stroke: 60mmSpring Stiffness: 110 kgMaximum load: 200 kg (440 lbs)Air Reservoir: AdjustableFactory Air Pressure: 0.4 MpaMaximum Air Pressure: 0.5 MpaPackage included :One pair shock absorbersNotes:No fitting manual included.Recommend qualified mechanic fits or checks after the fitting of this product.