Supertech Dual Valve Spring - 29/21.80mm-21-15.5mm - 22mm CB - 18.3mm Max Net Lift - Set of 16

These Supertech dual valve springs are made from high-tensile chrome-silicon wire, a well-built material chosen for its ability to handle the stresses of high-performance engine builds. The springs measure 29mm on the outer diameter and 21.80mm on the inner, with a coil bind diameter of 22mm. This specific design is intended for applications requiring a maximum net lift of 18.3mm, ensuring your valves can open and close reliably at higher RPMs.

When you're rebuilding an engine or looking to improve its valvetrain stability under demanding conditions, a strong dual spring setup like this is crucial. The dual spring design offers better dampening and resistance to valve float compared to single springs, especially at higher engine speeds. This set includes 16 springs, enough for a typical 4-cylinder engine, and they are designed to fit right into compatible cylinder heads.