Eye to eye: 240MM Eye diameter: up and down 10MM, can not be replaced Spring thick: 11MM Spring pressed to 10mm,rating loading: 500N(Not included the weight of vehicle) Spring pressed to 20mm,rating loading: 1000N(Not included the weight of vehicle) Feature: 1. Universal 11.4in rear suspension shock absorber, the spring pressure can be adjusted according to your need. 2. Offering smoother riding and giving better overall shock absorption management, reliable to use. 3. Suitable for most Chinese brands of ATV and Go Karts, such as for TaoTao, for Buyang, for Lifan, etc. 4. High quality steel alloy material, high strength, and durable, it has long lifespan. 5. Simple to install and disassemble, no complicated operation is required, saving time and effort. Specification: Item Type: Shock Absorbers Material: Steel Alloy + Spring Color: Black + White Mounting Hole Diameter: Approx. 10mm/0.4in Hole Center Distance: Approx. 290mm/11.4in Spring Diameter: Approx. 10mm/0.4in Moun