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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 68 Items.

Results 1 - 25 of 47

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: Monday 11/3/2025

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Estimated Ship Date: Monday 11/3/2025

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: Monday 11/3/2025

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Estimated Ship Date: Monday 11/3/2025

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 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Manley NexTek Valve Springs 221422-16

Manley NexTek Valve Springs 221422-16

Manley NexTek Valve Springs 221422-16

Valve Spring, Nex Tek, Dual, 1.335 in. Outside Diameter, 780 lbs/in., Set of 16

Part Number: MAN-221422-16

Not Yet Reviewed

Estimated Ship Date: Dec 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Manley NexTek Valve Springs 221422-1

Manley NexTek Valve Springs 221422-1

Manley NexTek Valve Springs 221422-1

Valve Spring, Nex Tek, Dual, 1.335 in. Outside Diameter, 780 lbs/in., Each

Part Number: MAN-221422-1

Not Yet Reviewed

Estimated Ship Date: Monday 11/3/2025

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Estimated Ship Date: Monday 11/3/2025

Manley NexTek Valve Springs 221424-1

Manley NexTek Valve Springs 221424-1

Manley NexTek Valve Springs 221424-1

Valve Spring, Dual, 1.640 in. Outside Diameter, 647 lbs./in. Rate, 1.070 in. Coil Bind Height, Each

Part Number: MAN-221424-1

Not Yet Reviewed

Estimated Ship Date: Monday 11/3/2025

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Estimated Ship Date: Monday 11/3/2025

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 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 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 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Manley NexTek Valve Springs 221447-1

Manley NexTek Valve Springs 221447-1

Manley NexTek Valve Springs 221447-1

Valve Spring, Triple, 1.677 in. Outside Diameter, 746 lbs./in. Rate, 1.160 in. Coil Bind Height, Each

Part Number: MAN-221447-1

Not Yet Reviewed

Estimated Ship Date: Monday 11/3/2025

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Estimated Ship Date: Monday 11/3/2025

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 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Manley NexTek Valve Springs 221425-1

Manley NexTek Valve Springs 221425-1

Manley NexTek Valve Springs 221425-1

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

Part Number: MAN-221425-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Manley NexTek Valve Springs 221421-1

Manley NexTek Valve Springs 221421-1

Manley NexTek Valve Springs 221421-1

Valve Spring, Nex Tek, Dual, 1.324 in. Outside Diameter, 435 lbs/in., Each

Part Number: MAN-221421-1

Not Yet Reviewed

Estimated Ship Date: Monday 11/3/2025

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Estimated Ship Date: Monday 11/3/2025

Manley NexTek Valve Springs 221445P-16

Manley NexTek Valve Springs 221445P-16

Manley NexTek Valve Springs 221445P-16

Valve Springs, Dual, 1.620 in. Outside Diameter, 500 lbs./in. Rate, 1.200 in. Coil Bind Height, Set of 16

Part Number: MAN-221445P-16

Not Yet Reviewed

Estimated Ship Date: Dec 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 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 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 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 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 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 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 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 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Manley NexTek Valve Springs 221434-1

Manley NexTek Valve Springs 221434-1

Manley NexTek Valve Springs 221434-1

Valve Spring, NexTek, Single Beehive, 1.126 in. O.D., 0.750 in. O.D., 0.880 in. Coil Bind Height, 330 lbs./in. Spring Rate, Each

Part Number: MAN-221434-1

Not Yet Reviewed

Estimated Ship Date: Dec 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Manley NexTek Valve Springs 221456-1

Manley NexTek Valve Springs 221456-1

Manley NexTek Valve Springs 221456-1

Valve Springs, Dual, 1.500 in. Outside Diameter, 800 lbs./in. Rate, 1.130 in. Coil Bind Height, Each

Part Number: MAN-221456-1

Not Yet Reviewed

Estimated Ship Date: Dec 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Manley NexTek Valve Springs 221454-1

Manley NexTek Valve Springs 221454-1

Manley NexTek Valve Springs 221454-1

Valve Springs, Dual, 1.650 in. Outside Diameter, 635 lbs./in. Rate, 1.105 in. Coil Bind Height, Each

Part Number: MAN-221454-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 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: Monday 11/3/2025

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Estimated Ship Date: Monday 11/3/2025

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

Manley NexTek Valve Springs 221449-1

Manley NexTek Valve Springs 221449-1

Manley NexTek Valve Springs 221449-1

Valve Spring, Triple, 1.677 in. Outside Diameter, 720 lbs./in. Rate, 1.142 in. Coil Bind Height, Each

Part Number: MAN-221449-1

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 221438-1

Manley NexTek Valve Springs 221438-1

Manley NexTek Valve Springs 221438-1

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

Part Number: MAN-221438-1

Not Yet Reviewed

Estimated Ship Date: Dec 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

Manley NexTek Valve Springs 221441P-16

Manley NexTek Valve Springs 221441P-16

Manley NexTek Valve Springs 221441P-16

Valve Springs, Dual, 1.570 in. Outside Diameter, 575 lbs./in. Rate, 1.215 in. Coil Bind Height, Set of 16

Part Number: MAN-221441P-16

Not Yet Reviewed

Estimated Ship Date: Dec 16, 2025 if ordered today

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Estimated Ship Date: Dec 16, 2025 if ordered today

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