Crower 68804H-1 Features:

Crower 68804H-1 dual valve spring with damper, PAC-enhanced material, nominal 1.539 in. design and 1.550 in. OD for high-load valvetrain control. Installed height is 1.950 in. with 235 lb seat pressure to help maintain lifter contact on aggressive mechanical roller cam profiles. Open height is 1.250 in. with 582 lb to 620 lb open pressure and a 505 lb/in. spring rate for high-rpm valve control. Coil bind height is 1.100 in.; outer spring ID is 1.135 in. and inner spring ID is 0.740 in. in a dual-spring configuration.

Valve Springs 1.539 Dual W/Damper Pac-enhanced Material Features:

• Dual spring with damper design for improved valve control, reduced spring surge, and more stable operation at high rpm in aggressive valvetrain setups
• PAC-enhanced material construction for high-stress durability, resilience, and consistent performance under demanding mechanical roller cam applications
• 1.550 in. OD, 1.950 in. installed height, 235 lb seat pressure for controlled valvetrain mass and dependable lifter-to-lobe contact
• 1.250 in. open height, 582-620 lb open pressure, 505 lb/in. spring rate for high-lift support and reduced valve float at elevated rpm
• 1.100 in. coil bind height with 1.135 in. outer spring ID and 0.740 in. inner spring ID for fitment reference and performance-oriented setup planning