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PAC Racing Springs
Traditional Springs are made from the same size (Diameter) wire throughout the helix of the spring. PAC Racing Springs has partnered with technology leaders in order to provide this advanced new tapered wire product. Tapered wire allows for a true progressive and dual rate without reducing spring travel and increasing weight from traditional methods. Tapered wire has several advantages to the true chassis engineer and extreme racer looking for the next level of performance.

PAC Racing Springs Categories

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Items 26-28 of 28
Valve Spring Retainers
Valve locks and retainers hold the retainer in place by using the force of the valve spring to hold the retainer and lock in place, not by the tang locking into the groove on the valve stem. In...More Details »
Valve Spring Shims
Pit Stop USA is The Online Motorsports Superstore! We feature Valve Spring Shims at low everyday prices.
Valve Spring Tester Springs
When accuracy is the difference between winning and losing, when choosing Valve Spring Tester Springs there is one test spring kit that's a cut above the rest … the RIMAC calibrated 3-in-1...More Details »
Items 26-28 of 28

PAC Racing Springs Products

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Items 226-250 of 278
Description: Valve Spring Retainer, 300 Series, 7 Degree, 0.640 in OD Step, Beehive Spring, Chromoly, Ford Modular, Set of 16
Item #: PACPAC-R362
Condition: New
Limited Supply: Only 2 Left!
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Price: $93.00
Sale: $88.00
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Description: Valve Spring Retainer, 300 Series, 7 Degree, 0.640 in OD Step, Beehive Spring, Chromoly, Set of 16
Item #: PACPAC-R363
Condition: New
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Price: $93.00
Sale: $88.00
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Description: Valve Spring Retainer, 400 Series, 7 Degree, 0.920 in / 0.650 in OD Steps, Dual Spring, Titanium, GM LS-Series, Set of 16
Item #: PACPAC-R455
Condition: New
Limited Supply: Only 1 Left!
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Price: $317.00
Sale: $295.00
Save: 7%
Save: $22.00

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Description: Valve Spring Retainer, 400 Series, 10 Degree, 1.040 in / 0.715 in OD Steps, Dual Spring, Titanium, Set of 16
Item #: PACPAC-R408
Condition: New
Limited Supply: Only 5 Left!
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Price: $317.00
Sale: $295.00
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Description: Valve Spring Retainer, 600 Series, 8 Degree, 1.090 in / 0.695 in OD Steps, Dual Spring, Steel, Set of 16
Item #: PACPAC-R641
Condition: New
Limited Supply: Only 2 Left!
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Price: $416.00
Sale: $395.00
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Description: Valve Spring, Hot Rod Series, Dual Spring / Damper, 469 lb/in Spring Rate, 1.150 in Coil Bind, 1.555 in OD, Set of 16
Item #: PACPAC-1940
Condition: New
Limited Supply: Only 6 Left!
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Price: $383.00
Sale: $348.00
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Save: $35.00

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Description: Valve Spring, RPM Series, Dual Spring, 600 lb/in Spring Rate, 0.985 in Coil Bind, 1.274 in OD, GM LS-Series, Each
Item #: PACPAC-1238X-1
Condition: New
Limited Supply: Only 0 Left!
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Price: $31.87
Sale: $30.75
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Save: $1.12
Description: Valve Spring, RPM Series, Dual Spring / Damper, 500 lb/in Spring Rate, 1.130 in Coil Bind, 1.539 in OD, Set of 16
Item #: PACPAC-1297
Condition: New
Limited Supply: Only 0 Left!
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Price: $598.00
Sale: $400.00
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Save: $198.00

Description: Valve Spring, RPM Series, Ovate Beehive Spring, 291 lb/in Spring Rate, 0.952 in Coil Bind, 1.083 in OD, Set of 16
Item #: PACPAC-1231X
Condition: New
Limited Supply: Only 2 Left!
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Price: $315.00
Sale: $216.00
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Save: $99.00
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Description: Valve Spring, RPM Series, Ovate Beehive Spring, 291 lb/in Spring Rate, 1.089 in Coil Bind, 1.083 in OD, Each
Item #: PACPAC-1230X-1
Condition: New
Limited Supply: Only 1 Left!
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Price: $20.28
Sale: $14.04
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Save: $6.24
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Description: Valve Spring, RPM Series, Ovate Beehive Spring, 291 lb/in Spring Rate, 1.089 in Coil Bind, 1.083 in OD, Set of 16
Item #: PACPAC-1230X
Condition: New
Limited Supply: Only 4 Left!
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Price: $315.00
Sale: $216.00
Save: 31%
Save: $99.00
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Description: Valve Spring, RPM Series, Beehive Spring, 245 lb/in Spring Rate, 1.208 in Coil Bind, 1.031 in OD, Ford 5.0L Coyote, Set of 16
Item #: PACPAC-1281X
Condition: New
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Price: $315.00
Sale: $295.00
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Save: $20.00

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Description: Valve Spring, RPM Series, Ovate Beehive Spring, 275 lb/in Spring Rate, 1.013 in Coil Bind, 1.061 in OD, GM LS-Series, Set of 16
Item #: PACPAC-1214X
Condition: New
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Price: $315.00
Sale: $295.00
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Description: Valve Spring, Single Spring, 236 lb/in Spring Rate, 0.870 in Coil Bind, 0.800 in OD, Each
Item #: PACPAC-MX111
Condition: New
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Price: $23.99
Sale: $23.00
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Save: $0.99
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Description: Valve Spring, Single Spring, 329 lb/in Spring Rate, 0.960 in Coil Bind, 0.934 in OD, Each
Item #: PACPAC-MX116
Condition: New
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Price: $23.99
Sale: $23.00
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Save: $0.99
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Description: Valve Spring Locator, Inside, 0.060 in Thick, 1.270 in OD, 0.575 in ID, 0.615 in Spring ID, Chromoly, Set of 16
Item #: PACPAC-S138
Condition: New
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Price: $93.00
Sale: $85.00
Save: 9%
Save: $8.00
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Description: Valve Spring Locator, Inside, 0.060 in Thick, 1.450 in OD, 0.570 in ID, 0.700 in Spring ID, Chromoly, Set of 16
Item #: PACPAC-S114
Condition: New
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Price: $93.00
Sale: $85.00
Save: 9%
Save: $8.00
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Description: Valve Spring Locator, Inside, 0.060 in Thick, 1.550 in OD, 0.635 in ID, 0.700 in Spring ID, Chromoly, Set of 16
Item #: PACPAC-S106
Condition: New
Limited Supply: Only 1 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $93.00
Sale: $85.00
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Save: $8.00
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Description: Valve Spring, 1200 Series, Triple Spring, 689 lb/in Spring Rate, 1.130 in Coil Bind, 1.645 in OD, Set of 16
Item #: PACPAC-1246
Condition: New
Limited Supply: Only 3 Left!
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Price: $495.00
Sale: $446.00
Save: 10%
Save: $49.00

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Description: Valve Lock, 10 Degree, 11/32 in Valve Stem, Standard Height, Steel, Black Oxide, Set of 32
Item #: PACPAC-LR8025
Condition: New
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Price: $93.00
Sale: $88.00
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Save: $5.00
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Description: Valve Lock, 10 Degree, 8 mm Valve Stem, 0.050 in More Height, Steel, Black Oxide, Set of 32
Item #: PACPAC-L8160
Condition: New
Limited Supply: Only 0 Left!
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Price: $93.00
Sale: $88.00
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Description: Valve Lock, 10 Degree, 11/32 in Valve Stem, 0.050 in More Height, Steel, Black Oxide, Set of 32
Item #: PACPAC-LR8028
Condition: New
Limited Supply: Only 0 Left!
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Price: $93.00
Sale: $88.00
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Description: Valve Lock, 10 Degree, 11/32 in Valve Stem, Standard Height, Steel, Black Oxide, Pair
Item #: PACPAC-L8025-1
Condition: New
Limited Supply: Only 2 Left!
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Price: $5.99
Sale: $5.72
Save: 5%
Save: $0.27
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Description: Valve Lock, 8 Degree, 11/32 in Valve Stem, Standard Height, Steel, Black Oxide, Set of 32
Item #: PACPAC-L8131
Condition: New
Limited Supply: Only 0 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $93.00
Sale: $88.00
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Description: Valve Lock, Mini 8 Degree, 5/16 in Valve Stem, 0.050 in More Height, Steel, Black Oxide, Set of 32
Item #: PACPAC-L8136
Condition: New
Limited Supply: Only 1 Left!
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Orders over $149 ship free. Oversize items are excluded.
Price: $93.00
Sale: $88.00
Save: 5%
Save: $5.00
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Items 226-250 of 278

More About PAC Racing Springs

Traditional Springs are made from the same size (Diameter) wire throughout the helix of the spring. PAC Racing Springs has partnered with technology leaders in order to provide this advanced new tapered wire product. Tapered wire allows for a true progressive and dual rate without reducing spring travel and increasing weight from traditional methods. Tapered wire has several advantages to the true chassis engineer and extreme racer looking for the next level of performance.

PAC Racing Springs pioneered high travel suspension springs when post race tech began disqualifying winning cars from too low of ride height, a result from spring sag and poor designs. We answered the demand using cutting edge materials and processing, thus reducing cost over expensive and ineffective aerospace alloys typically used. This innovative method provides superior spring construction and performance reducing cost drastically over competition. PAC Racing is capable of using our in house Servo Hydraulic single post MTS to duplicate the rigors of racing, every bump, every turn, which allows improvement to the design continuously.

Technology

The Primary focus of the Peterson Spring group is Automotive and Industrial applications, these interactions increase technical advancements for PAC Racing Spring products. We can offer enhanced technology through engineering resources and expanded experience from all of our power-train engineers. Additionally with nearly 100 years of manufacturing experience we continually improve our products to exceed demanding expectations.

Testing

Because of the extreme demands of racing, we routinely test all of our components using advanced testing technology. We have a fully accredited metallurgy lab with dedicated staff and equipment such as: SEM with EDAX, Xray Diffraction, Micro Hardness, Impact Testing, and MTS Tensile Test machine. Additionally, we are able to test functionality and fatigue properties in our Dyanamics Laboratory, which includes a single post MTS Servo Hydraulic test machine, various bench type equipment, and our High Tech Engine test lab. Whatever your application we strive to bring confidence that our products meet and exceed designed parameters.

PAC Racing Springs, based in Detroit, MI, is the Racing and Aftermarket Division of the Peterson Spring Company. With more than 10 divisions around the world, Peterson Spring is the largest privately held, family owned Spring Company in the USA. With nearly 100 years of operation, Peterson Spring proudly manufactures all the Racing and Aftermarket components in Detroit, Michigan.