Supertech Dual Valvespring + Retainer Kit - H/F Series Carbon Trims & Plates Super rear and now super

Super rear and now super available

Can display AFR values in hundredths of %

Furthermore

Bluetooth connection for Mobile connectivity

Supertech Dual Valvespring + Retainer Kit - H/F Series Carbon Trims & Plates Super rear and now superSupertech Dual Valvespring + Retainer Kit H F Series Supertech Dual Valvespring + Retainer Kit H F Series All Supertech valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for higher performance & durability at high rpms. Using high quality steel alloy also provides the added benefit of better structural memory for all of our springs. Supertech retainers are manufactured with high quality military certified Titanium