Description
Valve spring performance directly impacts your engine’s ability to maintain valve control at high RPM, and undersized or worn springs are a common limiting factor in built engines. The Manley 1.550 NexTek Dual Valve Springs deliver a 618 lb/in rate with precision tolerances, ensuring consistent valve seating and preventing float during aggressive cam profiles. If you’re running a serious racing engine or high-lift cam setup, these springs are engineered to keep your valvetrain reliable without compromise.
- Spring Rate: 618 lb/in
- Configuration: Dual spring
- Outer Diameter: 1.550 in
- Coil Bind: 1.150 in
- Material: NexTek alloy steel
- Finish: Super Finish coating
- Quantity: Set of 16
- MPN: 221452SF-16
- Installation: Requires valve spring compressor
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