High smoothness fork bushing. Outer copper treatment, protective against rust. Tested with salt spray to verify friction resistance. With Teflon coating. Notes: Sold per fork leg - must purchase two for complete set. Sometimes referred to as a fork tube bushing. Technical Details: Load capacity: 140 N/mm2. Coef(u) friction: 0.04 - 0.20. Temperature: -195 ~ 280°C. PV limit (dry): 3.6 N/mm2 x m/s. PV limit (oil): 50 N/mm2 x m/s. Note: 37 mm for Showa fork; dimensions: 37 x 41 x 12 mm.