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Manley

Manley NexTek Valve Springs

5.0 out of 5 stars 4 Customer Reviews

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 sup
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 thei
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.

Showing In Stock Items. Show All 15 Items.

Results 1 - 14 of 14

Manley NexTek Valve Springs 221424-16

Manley NexTek Valve Springs 221424-16

Manley NexTek Valve Springs 221424-16

Valve Springs, Dual, 1.640 in. Outside Diameter, 647 lbs./in. Rate, 1.070 in. Coil Bind Height, Set of 16

Part Number: MAN-221424-16

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Manley NexTek Valve Springs 221425-16

Manley NexTek Valve Springs 221425-16

Manley NexTek Valve Springs 221425-16

Valve Springs, Dual, 1.640 in. Outside Diameter, 604 lbs./in. Rate, 1.150 in. Coil Bind Height, Set of 16

Part Number: MAN-221425-16

Not Yet Reviewed

Estimated Ship Date: Today

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Manley NexTek Valve Springs 221436-16

Manley NexTek Valve Springs 221436-16

Manley NexTek Valve Springs 221436-16

Valve Spring, Dual, 1.290 in. Outside Diameter, 377 lbs./in. Rate, 1.100 in. Coil Bind Height, Set of 16

Part Number: MAN-221436-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221421-16

Manley NexTek Valve Springs 221421-16

Manley NexTek Valve Springs 221421-16

SPRING-LS-1 .800 LIFT

Part Number: MAN-221421-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221432-16

Manley NexTek Valve Springs 221432-16

Manley NexTek Valve Springs 221432-16

Valve Springs, Dual, 1.530 in. Outside Diameter, 500 lbs./in. Rate, 1.200 in. Coil Bind Height, Set of 16

Part Number: MAN-221432-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221428-16

Manley NexTek Valve Springs 221428-16

Manley NexTek Valve Springs 221428-16

Valve Springs, Single, 1.311 in. Outside Diameter, 341 lbs./in. Rate, 1.085 in. Coil Bind Height, Set of 16

Part Number: MAN-221428-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221444-16

Manley NexTek Valve Springs 221444-16

Manley NexTek Valve Springs 221444-16

Valve Springs, Dual, 1.610 in. Outside Diameter, 546 lbs./in. Rate, 1.220 in. Coil Bind Height, Set of 16

Part Number: MAN-221444-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221439-16

Manley NexTek Valve Springs 221439-16

Manley NexTek Valve Springs 221439-16

Valve Springs, NexTek, Conical Ovate Wire, Single, 1.311 in. O.D., 353 lbs./in. Spring Rate, 1.100 in. Coil Bind Height, Set of 16

Part Number: MAN-221439-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221438-16

Manley NexTek Valve Springs 221438-16

Manley NexTek Valve Springs 221438-16

Valve Springs, Single, 1.311 in. Outside Diameter, 353 lbs./in. Rate, 1.100 in. Coil Bind Height, Set of 16

Part Number: MAN-221438-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221437-16

Manley NexTek Valve Springs 221437-16

Manley NexTek Valve Springs 221437-16

Valve Springs, Single, 1.175 in. Outside Diameter, 255 lbs./in. Rate, 1.080 in. Coil Bind Height, Set of 16

Part Number: MAN-221437-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221443-16

Manley NexTek Valve Springs 221443-16

Manley NexTek Valve Springs 221443-16

Valve Springs, Dual, 1.580 in. Outside Diameter, 535 lbs./in. Rate, 1.170 in. Coil Bind Height, Set of 16

Part Number: MAN-221443-16

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Manley NexTek Valve Springs 221427-16

Manley NexTek Valve Springs 221427-16

Manley NexTek Valve Springs 221427-16

Valve Springs, Single, 1.125 in. Outside Diameter, 264 lbs./in. Rate, 1.080 in. Coil Bind Height, Set of 16

Part Number: MAN-221427-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221435-16

Manley NexTek Valve Springs 221435-16

Manley NexTek Valve Springs 221435-16

Valve Spring, Dual, 1.340 in. Outside Diameter, 394 lbs./in. Rate, 1.050 in. Coil Bind Height, Set of 16

Part Number: MAN-221435-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

Manley NexTek Valve Springs 221431-16

Manley NexTek Valve Springs 221431-16

Manley NexTek Valve Springs 221431-16

Valve Springs, Single, 1.311 in. Outside Diameter, 353 lbs./in. Rate, 1.100 in. Coil Bind Height, Set of 16

Part Number: MAN-221431-16

Not Yet Reviewed

Estimated Ship Date: Dec 15, 2025 if ordered today

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Estimated Ship Date: Dec 15, 2025 if ordered today

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