Manley 10 Degree Valve Spring Retainer - 1.120 in / 0.705 in OD Steps - 1.550 in Dual Spring - Plus 0.100 - Titanium - Set of 16 H778C01L Thermlock pistons in the ST

Thermlock pistons in the ST models block heat transfer from the pads and reduce temperatures in the caliper

5DO NOT apply directly to exhaust components

Will not fit Boss 302

Needs 2200+ stall

Plastic / Brass

Manley 10 Degree Valve Spring Retainer - 1.120 in / 0.705 in OD Steps - 1.550 in Dual Spring - Plus 0.100 - Titanium - Set of 16 H778C01L Thermlock pistons in the STManley titanium valve spring retainers are manufactured from special heat treated 6AL 4V titanium alloy, selected to deliver maximum strength and reliability. These retainers are excellent for all types of racing, and are designed for valve stem locks with a 10 degree taper. Manley Performance high performance and racing engine parts have been powering winners since 1966. Since our inception in March 1966, Manley Performance Products has been at the