Manley NexTek Valve Springs 221424-1

These Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines. They're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum fatigue life. They feature a proprietary, multi-step heat-treating that minimizes load loss and have computer-aided modeling to minimize valve bounce and valve gear separation. The Manley NexTek valve springs are smaller diameter and lightweight, allowing engines to rev higher faster. They have an extended tip thickness designed to eliminate overload breakage, and their tightly controlled open-end flatness reduces valve stem side loading.Brand: Manley
Manufacturer's Part Number: 221424-1
Part Type: Valve Springs
Product Line: Manley NexTek Valve Springs
HP Direct Part Number: MAN-221424-1
UPC: 807298023595
Valve Spring Style: Standard
Number of Springs Per Valve: Dual
Maximum Valve Lift (in.): 0.880 in.
Retainers Included: No
Outside Diameter of Outer Spring (in.): 1.640 in.
Coil Bind Height (in.): 1.070 in.
Damper Spring Included: No
Spring Rate (lbs/in.): 647 lbs./in.
Inside Diameter of Outer Spring (in.): 1.185 in.
Inside Diameter of Inner Spring (in.): 0.860 in.
Locks Included: No
Valve Stem Seals Included: No
Valve Springs Coated: No
Remanufactured: No
Quantity: Sold individually.