Features: 1.Wide Application: The shock absorber is wide applicable for 150cc?250cc PIT QUAD DIRT BIKE Trail Bike Dirt Bike GO Kart Motorcycle. 2.Function: Provide smoother driving and better overall damping management, improve driving comfort, motorcycle handling and driving safety. 3.Parameters: The mounting hole center distance is 430mm, the total length of is 460mm, the bore core inner diameter is 10mm, and the spring diameter is 9mm. 4.Adjustable Spring: With adjustable damping to adjust the strength that suits you best, and can be adjusted to cope with different road conditions. 5.Ideal Replacement: Used to replace old and damaged shock absorbers, and provides a smoother ride and better overall damping management to improve ride comfort. Specification: Item Type: 430mm Shock Absorber_x000D_ Material: Steel alloy + high performance spring_x000D_ _x000D_ Features: With adjustable damping, you can adjust it according to your load_x000D_ (Please note that you must use the adjustment tool)_x000D_ Mounting Hole Center Distance: Approx. 430mm/16.93in_x000D_ Total Length of Shock Absorber: Approx. 460mm/18.11in_x000D_ Inner Diameter of Hole: Approx. 10mm/0.39in_x000D_ Spring Diameter: Approx. 9mm/0.35in_x000D_ Mounting Hole Thickness: Approx. 20mm/0.79in_x000D_ Fitment:_x000D_ Applicable for 150cc?250cc PIT QUAD DIRT BIKE Trail Bike Dirt Bike GO Kart Motorcycle