Features: 1.Wide Application: The shock absorber is wide applicable 50cc 110cc 125cc 140cc 150cc 160cc 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 330mm, the total length of is 360mm, the bore core inner diameter is 10mm, and the spring diameter is 8mm. 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.High Strength Material: Made of high strength CNC aluminum alloy, and high performance spring, the shock damper is wear proof, impact resistant and durable. Specification: Item Type: 330mm Shock Absorber_x000D_ Material: CNC aluminum 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, otherwise it is easy to cause finger loss)_x000D_ _x000D_ Mounting Hole Center Distance: Approx. 330mm/12.99in_x000D_ Total Length Of Shock Absorber: Approx. 360mm/14.17in_x000D_ Inner Diameter Of Hole: Approx. 10mm/0.39in_x000D_ Spring Diameter: Approx. 8mm/0.31in_x000D_ Applicable: _x000D_ Standard 330mm hole core distance, common to most 50cc 110cc 125cc 140cc 150cc 160cc PIT QUAD DIRT BIKE TRAIL BIKE DIRT BIKE GO Kart Motorcycle