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Valve Springs, Triple, 1.677 in. Outside Diameter, 720 lbs./in. Rate, 1.142 in. Coil Bind Height, Set of 16
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Estimated Ship Date: Oct 27, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
221449-16
Part Type:
Product Line:
Summit Racing Part Number:
MAN-221449-16
UPC:
807298023847
Valve Spring Style:
Standard
Number of Springs Per Valve:
Triple
Maximum Valve Lift (in.):
1.000 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.677 in.
Coil Bind Height (in.):
1.142 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
720 lbs./in.
Inside Diameter of Outer Spring (in.):
1.440 in.
Inside Diameter of Inner Spring (in.):
0.632 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold as a set of 16.
Installed Height (in.):
2.200 in.
Seat Pressure at Installed Height (lbs.):
350 lbs.
Open Height (in.)(application):
1.200
Open Pressure (lbs.):
1,070 lbs.
Remanufactured:
No
Manley NexTek Valve Springs
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.
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Some parts are not legal for use in California or other states with similar laws / regulations
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