Valve springs data:

Seat pressure - 70lbs @ 38.40mm (intake), 82lbs @ 37.00mm (exhaust)

Open (lift) pressure - 172lbs @ 10mm (intake), 102lbs @ 10mm (exhaust)

Max lift - 11.90mm (intake), 10.60mm (exhaust)

Spring coil bind - 24.90mm

Rate - 10.20lbs/mm

Spring outer diameter - 24.00mm

Spring inner diameter - 16.50mm

Set includes:

Single springs - 16 pcs.

With this set the risk of valve flutter and a possible engine failure is minimized.

Recommended for engines with series and racing camshafts and over 7500 RPM.

Can be used together with standard titanium retainers and seats.