Crower 68307-16 Features:

Crower 68307-16 Severe Duty single valve spring set with integrated damper; set of 16 for V8 applications. 1.260 in. OD single spring design built from premium Super Clean silicone material for high-rpm valvetrain control. Engineering specs include 2.103 in. free length and 0.197 in. wire diameter with no color coding. Designed to help control reciprocating valvetrain mass and reduce destructive valve float at high RPM.

Valve Springs Severe Duty Single 1.260 In. Od With Features:

• 1.260 in. OD single spring with integrated damper for added stability, severe-duty valvetrain control, and more consistent high-RPM valve motion in demanding engine builds
• Super Clean silicone material construction for strength under repeated cycling, helping maintain spring performance and resist fatigue in performance-oriented valvetrain setups
• 2.103 in. free length with 0.197 in. heavy-duty wire diameter, providing the physical spring dimensions needed for controlled operation in compatible high-performance applications
• Controls reciprocating valvetrain mass to help prevent destructive valve float at high RPM, supporting more stable operation when installed at the correct height and clearance
• 16-piece set for V8 applications; verify at least 0.050 in. coil clearance at full valve lift to reduce coil-bind risk and support intended spring pressure performance