Manley RET-IMPINGED 23706L ST

Manley's Super 7 Degree (actually 8 degrees) valve spring retainers are crafted from heat-treated titanium for superior strength and durability. These retainers are designed to accommodate 1.560" diameter springs, featuring a 1.140" ID for the outer spring and a 0.745" ID for the inner spring. The exclusive impingement surface process significantly enhances abrasion resistance by 20%, improves fatigue strength by 30%, and refines the overall surface finish. The lightweight versions are 3-4 grams lighter than standard retainers, contributing to reduced valvetrain mass and improved engine performance. This set includes 16 retainers.