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PAC Racing 500 Series Valve Spring Retainers

4.33 out of 5 stars 3 Customer Reviews

PAC Racing 500 Series valve spring retainers are every bit as reliable as retainers 20 percent heavier. These retainers are produced from the finest proprietary high-tensile titanium alloy for incredible wear and strength. PAC's engineers take this material and form the ultimate lightweight retainers. They are designed for high-rpm professional racing and abusive or severe engine applications. When you're building severe engines, you need parts designed to withstand incredible heat and rpm. PAC Racing 500 Series valve spring retainers are built to take all that you can give.

Results 1 - 25 of 29

Valve Spring Retainers, 500 Series, Dual, Titanium, 1.400 in. O.D., 10 degree, Set of 16

Part Number: RSC-PAC-R505-16

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valve Spring Retainers, 500 Series, Dual, Titanium, 1.300 in. O.D., 8 degree, Set of 16

Part Number: RSC-PAC-R532-16

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Triple Spring 500 Series Retainer - Titanium Retainer for Triple Drag Race Springs. Lock angle: STD 10

Part Number: RSC-PAC-R501-16

Not Yet Reviewed

Estimated Ship Date: Jun 12, 2026 if ordered today

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Estimated Ship Date: Jun 12, 2026 if ordered today

Valve Spring Retainers, 500 Series, Beehive, Titanium, 0.990 in. Outer Spring O.D., 7 degree Lock, Single Spring, Fits GM LS Series Valvetrains, Each

Part Number: RSC-PAC-R511

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valve Spring Retainers, 500 Series, Titanium, 1.475 in. Outer Spring O.D., 10 degree Lock, Triple Springs, Each

Part Number: RSC-PAC-R501

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for PAC-1341 Valve Spring. Lock angle: STD 8 degree

Part Number: RSC-PAC-R557

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Valve Spring Retainer, 500 Series, Triple, Titanium, 1.480 in. O.D., 10 degree, Each

Part Number: RSC-PAC-R522

Not Yet Reviewed

Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for RPM Sereis Dual Valve Springs. Lock angle: mini 8 de

Part Number: RSC-PAC-R550-16

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for PAC-1385 & 1395 Dual Valve Springs. Lock angle: STD

Part Number: RSC-PAC-R519-16

Not Yet Reviewed

Estimated Ship Date: Jun 12, 2026 if ordered today

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Estimated Ship Date: Jun 12, 2026 if ordered today

Valve Spring Retainers, 500 Series, Dual, Titanium, 1.475 in. O.D., 10 degree, Set of 16

Part Number: RSC-PAC-R504-16

Not Yet Reviewed

Estimated Ship Date: Jun 12, 2026 if ordered today

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Estimated Ship Date: Jun 12, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for LS Dual Valve Springs PAC-1221 & 1521. Lock angle: L

Part Number: RSC-PAC-R516

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Valve Spring Retainers, 500 Series, Beehive, Titanium, 0.990 in. Outer Spring O.D., 10 degree Lock, Dual Springs, Each

Part Number: RSC-PAC-R510

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Dual Spring 500 Series Retainer - Titanium Retainer for PAC-1385 & 1395 Dual Valve Springs. Lock angle: STD

Part Number: RSC-PAC-R519

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for PAC-1530 & 1335 Dual Valve Springs. Lock angle: mini

Part Number: RSC-PAC-R532

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Estimated Ship Date: Monday 4/20/2026 if shipped by air

Triple Spring 500 Series Retainer - Titanium Retainer for Large OD Retainer for Large Triple Spring, for bette

Part Number: RSC-PAC-R565

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for PAC-1342, 1386 & 1396 Dual Valve Springs. Lock angle

Part Number: RSC-PAC-R538

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for PAC-1227, 1239, 1254, 1297 & 1509 Dual Valve Springs.

Part Number: RSC-PAC-R515

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainerfor PAC-1385 & 1395 Dual Valve Springs. Lock angle: STD 10

Part Number: RSC-PAC-R514

Not Yet Reviewed

Estimated Ship Date: Jun 10, 2026 if ordered today

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Estimated Ship Date: Jun 10, 2026 if ordered today

Triple Spring 500 Series Retainer - Titanium Retainer for Triple Drag Race Springs. Lock angle: STD 8

Part Number: RSC-PAC-R502-16

Not Yet Reviewed

Estimated Ship Date: Jun 12, 2026 if ordered today

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Estimated Ship Date: Jun 12, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for LS Dual Valve Springs PAC-1221 & 1521. Lock angle: L

Part Number: RSC-PAC-R516-16

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for 1.175 Series Dual Springs. Lock angle: STD 10

Part Number: RSC-PAC-R504

Not Yet Reviewed

Estimated Ship Date: Jun 10, 2026 if ordered today

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Estimated Ship Date: Jun 10, 2026 if ordered today

Triple Spring 500 Series Retainer - Titanium Retainer for Triple Drag Race Springs. Lock angle: STD 8

Part Number: RSC-PAC-R502

Not Yet Reviewed

Estimated Ship Date: Jun 12, 2026 if ordered today

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Estimated Ship Date: Jun 12, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for PAC-1226 & 1326 Dual Valve Springs. Lock angle: STD

Part Number: RSC-PAC-R541

Not Yet Reviewed

Estimated Ship Date: Jun 10, 2026 if ordered today

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Estimated Ship Date: Jun 10, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for PAC-1240, 1340 & 1540 Dual Valve Springs. Lock angle

Part Number: RSC-PAC-R540

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today

Dual Spring 500 Series Retainer - Titanium Retainer for RPM Sereis Dual Valve Springs. Lock angle: mini 8 de

Part Number: RSC-PAC-R550

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today