Manley 03263-50 Manley Valve Spring Shims Valve Spring Retainers With gains of up to

With gains of up to 40 HP and 60 lb-ft of torque on gas engines and significantly more on turbo-diesel platforms

crankshaft fatigue failure

SKU 824258 is backed by the manufacturer's quality guarantee and our satisfaction commitment

For T5-swapped Mustangs

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Manley 03263-50 Manley Valve Spring Shims Valve Spring Retainers With gains of up toThe Manley 03263 50 Manley Valve Spring Shims provide the required spring pressure for aggressive cam profiles without coil bind or surge at high RPM. Manley Professional valve springs are wound from proprietary wire stock and heat set to prevent pressure loss over time. Part 33282 is configured for its specific application with attention to fitment requirements. Each spring is tested for installed height pressure, open pressure, and coil bind