Standard Steel Springs in a wide variety of spring weights and travel. The 35 mm/1.385" Internal diameter also fits DVO, MRP and X-Fusion shocks. Spring markings: 650 x 2.80. All standard FOX steel springs are black and are marked with their spring rate in lbs/in (in 50 lb increments) and the total travel of the spring itself. *IMPORTANT - FOX standard black springs should only be paired with shocks having less travel than the travel marked on the spring itself. Ultra-durable black powder-coat finish provides protection and keeps the spring looking good. Item Specifications: Stroke (ins): 2.264 - 2.55, Material: Steel, I.D. (mm): 35.200000000000003, Spring Weight: 650,