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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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2-1/2" x 10" Coil-over Springs
Manufactures of 2-1/2" inside diameter by 10" Tall springs include Afco, Eibach, Hypercoils, Integra, Landrum, QA1, and Suspension Spring Specialist
Bump Spring Cups
For use with coil springs made specifically for bump stop applications.
Cylinder Head Parts Kits
Pit Stop USA is The Online Motorsports Superstore! We feature Cylinder Head Parts Kits at low everyday prices.
Mini Sprint Torsion Bars
Pit Stop USA is The Online Motorsports Superstore! We feature Mini Sprint Torsion Bars, Micro Sprint Torsion Bars and more at low everyday prices.
PAC 2-1/2" I.D. x 10" Tall
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...More Details »
Sway Bars - NEW
Check out the Recently Listed Sway Bars.
Throttle Return Springs
There is no more important component on your race car than a reliable throttle return spring setup from PitStopUSA.com. We have a great selection of Throttle Return Spring Kits for all popular applications.
Items 1-25 of 32

PAC Racing Springs Products

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Items 226-243 of 243
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!
Same Day Shipping!
Ships from Michigan.
Price: $101.00
Sale: $92.00
Save: 9%
Save: $9.00
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Description: Valve Spring, 1200 Series, Triple Spring / Damper, 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 0 Left!
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FREE SHIPPING! Ships from Michigan.
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Price: $506.00
Sale: $462.00
Save: 9%
Save: $44.00

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Description: Valve Lock, 10 Degree, 11/32 in Valve Stem, Standard Height, Steel, Natural, Set of 32
Item #: PACPAC-LR8025
Condition: New
Limited Supply: Only 3 Left!
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Ships from Michigan.
Price: $100.00
Sale: $92.00
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Save: $8.00
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Description: Valve Lock, 10 Degree, 8 mm Valve Stem, 0.050 in More Height, Steel, Natural, Set of 32
Item #: PACPAC-L8160
Condition: New
Limited Supply: Only 3 Left!
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Ships from Michigan.
Price: $100.00
Sale: $92.00
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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 1 Left!
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Ships from Michigan.
Price: $100.00
Sale: $92.00
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Description: Valve Lock, 7 Degree, 11/32 in Valve Stem, Standard Height, Steel, Natural, Each
Item #: PACPAC-L8154
Condition: New
Limited Supply: Only 3 Left!
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Ships from Michigan.
Price: $100.00
Sale: $92.00
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Save: $8.00
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Description: Valve Lock, 8 Degree, 11/32 in Valve Stem, 0.050 in More Height, Steel, Natural, Each
Item #: PACPAC-L8132
Condition: New
Limited Supply: Only 3 Left!
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Ships from Michigan.
Price: $100.00
Sale: $92.00
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Description: Valve Lock, 8 Degree, 8 mm Valve Stem, 0.050 in Less Height, Steel, Black Oxide, Set of 32
Item #: PACPAC-L8143
Condition: New
Limited Supply: Only 4 Left!
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Ships from Michigan.
Price: $100.00
Sale: $92.00
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Description: Valve Lock, Mini 8 Degree, 11/32 in Valve Stem, Standard Height, Steel, Natural, Set of 32
Item #: PACPAC-L8133
Condition: New
Limited Supply: Only 0 Left!
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Ships from Michigan.
Price: $100.00
Sale: $92.00
Save: 8%
Save: $8.00
No image available!
Description: Valve Lock, Mini 8 Degree, 11/32 in Valve Stem, Standard Height, Steel, Natural, Set of 32
Item #: PACPAC-L8134
Condition: New
Limited Supply: Only 0 Left!
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Ships from Michigan.
Price: $100.00
Sale: $92.00
Save: 8%
Save: $8.00
Description: Valve Spring Kit, Dual Spring, 369 lb/in Rate, 1.000 in Coil Bind, 1.290 in OD, Chromoly Retainer, Viton Seal, Steel Seat, GM LS-Series, Kit
Item #: PACPAC-KS23
Condition: New
Limited Supply: Only 1 Left!
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FREE SHIPPING! Ships from Michigan.
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Price: $727.99
Sale: $719.96
Save: 1%
Save: $8.03

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Description: Valve Spring Retainer, 500 Series, 10 Degree, 1.450 in / 0.735 in OD Steps, Dual Spring, Chromoly, Set of 16
Item #: PACPAC-R387
Condition: New
Limited Supply: Only 3 Left!
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Ships from Michigan.
Price: $100.00
Sale: $92.00
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Description: Valve Spring Retainer, 10 Degree, 1.215 / 0.865 / 0.630 in OD Steps, 1.620 in Triple Spring, Titanium, Set of 16
Item #: PACPAC-R565
Condition: New
Limited Supply: Only 3 Left!
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FREE SHIPPING! Ships from Michigan.
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Price: $560.00
Sale: $515.00
Save: 8%
Save: $45.00

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Description: Valve Spring Locator, Inside, 0.060 in Thick, 1.500 in OD, 0.575 in ID, 0.730 in Spring ID, Chromoly, Set of 16
Item #: PACPAC-S117
Condition: New
Limited Supply: Only 3 Left!
Same Day Shipping!
Ships from Michigan.
Price: $101.00
Sale: $92.00
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Save: $9.00
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Description: Valve Spring Shim, 0.030 in Thick, 1.250 in OD, Steel, Set of 16
Item #: PACPAC-S189
Condition: New
Limited Supply: Only 0 Left!
Same Day Shipping!
Ships from Michigan.
Price: $45.00
Sale: $41.00
Save: 9%
Save: $4.00
Description: Valve Spring Shim, 0.050 in Thick, 1.250 in OD, Steel, Set of 16
Item #: PACPAC-S188
Condition: New
Same Day Shipping!
Ships from Michigan.
Price: $46.50
Sale: $42.00
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Save: $4.50
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Description: Valve Spring Shim, 0.015 / 0.020 / 0.030 / 0.050 in Thick, 1.250 in OD, 0.575 in ID, Steel, Kit
Item #: PACPAC-KS93
Condition: New
Limited Supply: Only 5 Left!
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FREE SHIPPING! Ships from Michigan.
Free Ground Shipping
Price: $151.99
Sale: $149.96
Save: 1%
Save: $2.03
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No image available!
Description: Valve Spring Shim, 0.050 in Thick, 1.500 in OD, 0.570 in ID, Steel, Set of 16
Item #: PACPAC-S184
Condition: New
Limited Supply: Only 0 Left!
Same Day Shipping!
Ships from Michigan.
Price: $46.00
Sale: $42.00
Save: 9%
Save: $4.00
Items 226-243 of 243

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.