Universal replacement for Honda/Yamaha/Suzuki/Kawasaki, the diameter of the round hole at the bottom is 12mm, Fit on most 150cc~750cc Sport bikes and Dirt Bikes, Go-kart and Moped Quad 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 Package included,One Pair Shock Absorbers, 2 x Wrench, 2 x Bushing Product Description Dimension: Length of Eye to Eye Core: 340mm Four color for choose Eye Diameter(with bushing): 12mm Eye Diameter(Without bushing): 16mm Eye Thickness: 21mm Eye Maximum Tensile Strength: 2,000 Kgf Spring Thickness: 7mm Spring Width: 50mm Working Stroke: 46mm Spring Stiffness: 110 kg Maximum load: 150 kg (330 lbs) Air Reservoir: Adjustable Factory Air Pressure: 0.4 Mpa Maximum Air Pressure: 0.5 Mpa Fitment: Universal fits most 150cc~750cc street bikes, Karting(Go kart), Scooters and Moped Quad (ATV) with shocks eye to eye distance