Crower 68803H-1 Features:

Single replacement valve spring for Crower 68803H applications; 1.550 in. dual spring design with built-in damper. PRO-PAC GOLD and super clean silicone construction helps deliver high-RPM stability and long valvetrain life. Free length measures 2.560 in. with .221/.138 wire diameters and a 600 lb/in. spring rate. Produces 248 lb at 2.100 in. installed height, 279 lb at 2.050 in., 307 lb at 2.000 in., and 340 lb at 1.950 in.

Valve Springs 1.550 Dual W/Damper Pro-pac Gold 1 Only Features:

• 1.550 in. dual valve spring with integrated damper, engineered for stable valvetrain control and improved high-rpm performance in demanding high-lift engine applications
• PRO-PAC GOLD and super-clean silicone construction, designed for extreme durability, consistent pressure control, and reliable operation under aggressive performance conditions
• 600 lb/in. spring rate with 248 lb load at 2.100 in. installed height, supporting precise valve motion control and helping maintain performance as engine speed increases
• 2.560 in. free length with .221/.138 wire diameters, matched for dual-spring performance and proper support of high-lift camshaft combinations in race-oriented builds
• Single replacement spring for targeted service needs, helping reduce valve float, minimize coil bind risk, and restore proper spring control without purchasing a full set