The MaxSpool Engineering Cummins Dual Valve Springs With Retainers are a double spring design which are lighter design then convention single vale spring designs.
The MaxSpool Engineering Cummins Dual Valve Springs With Retainers can handle up to 1.00˝ of maximum valve lift.
Using the lighter springs in the MaxSpool Engineering Cummins Dual Valve Springs With Retainers provides much the same benefit as using lighter valves. The MaxSpool Engineering Cummins Dual Valve Spring design means less strain on the valve-train so the valve springs can control motion and damper the valve train harmonics better.