- Spring rate: 9.0 N/mm - Inner diameter: 25.5mm - Length: 300mm This Öhlins spring set will fit the NIX 30 Street front fork cartridge kit for upside down forks. These cartridge kits are sold without springs so you may choose the best spring rate for your specific application (rider weight, preferences). Please follow Öhlins recommendations regarding spring rates and oil in relation to rider's weight and preference as listed in the specific cartridge kit installation instruction. Available spring sets: - 962747 spring set 8.0 N/mm - 962748 spring set 8.5 N/mm - 962749 spring set 9.0 N/mm - 962750 spring set 9.5 N/mm - 962738 spring set 10.0 N/mm