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: Provides a smoother ride and better overall damping management, improves riding comfort, motorcycle handling and driving safety. 3. Parameters: the mounting hole center distance is 330mm, the overall length is 360mm, the bore core inner diameter is 10mm, and the spring diameter is 8mm. 4. Adjustable spring: With adjustable damping to adjust the force 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 absorber is wear-resistant, impact-resistant and durable. Specification: Item Type: 330mm Shock Absorber Material: CNC Aluminum Alloy + High Performance Spring Features: With adjustable damping, you can adjust it according to your load (Please note that you need to use the adjustment tool, otherwise it is easy to lose fingers) Mounting Hole Center Distance: Approx. 330mm/12.99in Shock Absorber Total Length: Approx. 360mm/14.17in Hole Inner Diameter: Approx. 10mm/0.39in Spring Diameter: Approx. 8mm/0.31in Applicable: Standard hole core distance 330mm, common to most 50cc 110cc 125cc 140cc 150cc 160cc motorcycle PIT QUAD DIRT BIKE TRAIL BIKE DIRT BIKE GO Kart Package List: 1x Shock Absorber 330mm