Supertech Springs and Retainer Kit for D Series Honda

This is a set of 16 Supertech Single Valvesprings and Titanium Retainers for Honda D16Y8, D17, and D16Z Engines. These valvesprings and retainers will reliably allow your engine to rev high without the worry of part failure, valve float, or coil bind. Aftermarket valvesprings are made out of superior metal alloy's and optimized spring rates to make sure your valvetrain can keep up with your cams at high RPM. Whether you are rebuilding your engine, or building an all out race engine, replacing your valvetrain with Supertech components will allow you to rev higher, and go more aggressive on your cams. Seat Pressure: 60 @ 49.5 Open Pressure: 166 @ 12.5 Max Lift: 14.90mm Coil Bind: 34.60mm Outer Spring OD: 22.70mm Inner Spring OD: Single Inner Spring ID: Single Rate: 8.5 Kit Spring: SPR-H1002S Kit Spring qty: 16 Retainer: RET-H1002/T1 Outer Spring ID: 15.20mm Retainer qty: 16 Supertech has been around for a long time in the Valvetrain industry, and has race proven their product year af