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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 1-25 of 48
10° Steel 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 »
10° Titanium 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 »
10° Valve Locks
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 »
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
2-1/2" x 12" Coil-over Springs
Manufactures of 2-1/2" inside diameter by 12" Tall springs include Afco, Eibach, Hypercoils, Integra, Landrum, QA1, Suspension Spring Specialist, and Swift
2-1/2" x 14" Coil-over Springs
Manufactures of 2-1/2" inside diameter by 14" Tall springs include Afco, Eibach, Hypercoils, Integra, Landrum, QA1, Suspension Spring Specialist and Swift
2-1/2" x 6" Coil-over Springs
We have 2-1/2" inside diameter by 6" Tall springs from Eibach
2-1/2" x 7" Coil-over Springs
Manufactures of 2-1/2" inside diameter by 7" Tall springs include Eibach, Hypercoils, and Suspension Spring Specialist
2-1/2" x 8" Coil-over Springs
Manufactures of 2-1/2" inside diameter by 8" Tall springs include Eibach, Hypercoils, Integra, Landrum, and Suspension Spring Specialist
2-1/2" x 9" Coil-over Springs
QA1 is currently the only Manufacture we carry of 2-1/2" inside diameter by 9" Tall springs
5" x 13" Rear Coil Springs
Manufactures of 5" outside diameter by 13" Tall springs include Afco, Eibach, Hypercoils, Integra, Landrum, and Suspension Spring Specialist
5" x 16" Rear Coil Springs
Manufactures of 5" outside diameter by 16" Tall springs include Afco, Eibach, Hypercoils, and Integra
5" x 9.5" Front Coil Springs
Manufactures of 5" outside diameter by 9.5" Tall springs include Eibach, Hypercoils, Integra, Landrum, and Suspension Spring Specialist
7° Steel 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 »
7° Titanium 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 »
7° Valve Locks
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 »
Bump Rubber Cups
Pit Stop USA is The Online Motorsports Superstore! We feature Bump Rubber Cups at low everyday prices.
Bump Rubbers
Pit Stop USA is The Online Motorsports Superstore! We feature Bump Rubbers at low everyday prices.
Bump Spring Cups
For use with coil springs made specifically for bump stop applications.
Bump Stop Springs
Engineered for maximum travel and consistency in the most extreme conditions, the Eibach BUMP-SPRING System offers limitless tuning options for "soft spring" Dirt and Pavement Racers.
Engines and Components - Clearance
HURRY! Sale is limited to stock on hand! No rain checks will be issued. Quantities are limited so don't delay!
Exhaust Y-Pipes - NEW
Check out the Recently Listed Exhaust Y-Pipes.
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 »
PAC 2-1/2" I.D. x 12" 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 »
Items 1-25 of 48

PAC Racing Springs Products

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Items 1-25 of 408
NEW!
Description: .800 Steel Chromoly Valve Spring Retainers Beehive
Item #: PACPAC-R346
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Ships from Michigan.
Price: $69.99
Sale: $66.20
Save: 5%
Save: $3.79
Qty:

NEW!
Description: Valve Spring, RPM Series, Dual Spring, 240 lb./in Spring Rate, 0.941 in Coil Bind, 1.021 in OD, Ford Coyote, Set of 16
Item #: PACPAC-1234X
Condition: New
Limited Supply: Only 0 Left!
Same Day Shipping!
FREE SHIPPING! Ships from Michigan.
Price: $251.99
Sale: $238.54
Save: 5%
Save: $13.45
NEW!
Description: Valve Spring Retainer, 300 Series, 7 Degree, 0.940 in / 0.680 in OD Steps, Dual Spring, Chromoly, Set of 16
Item #: PACPAC-R335
Condition: New
Limited Supply: Only 4 Left!
Same Day Shipping!
Ships from Michigan.
Price: $69.99
Sale: $66.20
Save: 5%
Save: $3.79
Qty:

NEW!
Description: Valve Lock, 10 Degree, 11/32 in Valve Stem, Standard Height, Steel, Natural, Set of 32
Item #: PACPAC-LR8027
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
Ships from Michigan.
Price: $70.99
Sale: $67.08
Save: 6%
Save: $3.91
Qty:

NEW!
Description: Valve Spring, 1200 Series, Ovate Beehive Spring, 363 lb/in Spring Rate, 1.180 in Coil Bind, 1.282 in OD, Set of 16
Item #: PACPAC-1283
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
FREE SHIPPING! Ships from Michigan.
Price: $246.99
Sale: $233.81
Save: 5%
Save: $13.18
Qty:

NEW!
No image available!
Description: Valve Spring, 1300 Series, Dual Spring, 1015 lb/in Spring Rate, 1.230 in Coil Bind, 1.550 in OD, Set of 16
Item #: PACPAC-1354
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Ships from Michigan.
Price: $805.99
Sale: $765.01
Save: 5%
Save: $40.98

Qty:

NEW!
No image available!
Description: Valve Spring, 1300 Series, Dual Spring, 550 lb/in Spring Rate, 1.150 in Coil Bind, 1.550 in OD, Set of 16
Item #: PACPAC-1343
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Ships from Michigan.
Price: $533.99
Sale: $507.21
Save: 5%
Save: $26.78

Qty:

NEW!
Description: Valve Spring Retainer, 400 Series, 10 Degree, 1.125 in / 0.800 in OD Steps, Dual Spring, Titanium, Set of 16
Item #: PACPAC-R436
Condition: New
Limited Supply: Only 4 Left!
Same Day Shipping!
FREE SHIPPING! Ships from Michigan.
Price: $233.99
Sale: $221.90
Save: 5%
Save: $12.09
Qty:

NEW!
Description: Valve Spring Retainer, 500 Series, 10 Degree, 1.040 in / 0.715 in OD Steps, Dual Spring, Titanium, Each
Item #: PACPAC-R508-1
Condition: New
Limited Supply: Only 7 Left!
Same Day Shipping!
Ships from Michigan.
Price: $22.11
Qty:

NEW!
Description: Valve Spring Retainer, 500 Series, 8 Degree, 1.040 in / 0.715 in OD Steps, Dual Spring, Titanium, Each
Item #: PACPAC-R509-1
Condition: New
Same Day Shipping!
Ships from Michigan.
Price: $22.11
Qty:

NEW!
No image available!
Description: Valve Spring Retainer, 600 Series, Mini 8 Degree, 0.890 in / 0.600 in OD Steps, Dual Spring, Steel, Set of 16
Item #: PACPAC-R632
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Ships from Michigan.
Price: $322.99
Sale: $306.67
Save: 5%
Save: $16.32

Qty:

NEW!
Description: Bump Stop Spring, 2.000 in Free Length, 1.190 in OD, 400-600 lb./in Spring Rate, Steel, Orange, Sprint Car, Kit
Item #: PACPAC-KS114
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Ships from Michigan.
Price: $411.99
Sale: $391.22
Save: 5%
Save: $20.77

Qty:

NEW!
Description: Bump Stop Spring, 1.000 in Free Length, 1.700 in OD, 200-800 lb./in Spring Rate, Steel, Orange, Sprint Car, Kit
Item #: PACPAC-KS112
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
FREE SHIPPING! Ships from Michigan.
Price: $411.99
Sale: $391.22
Save: 5%
Save: $20.77

Qty:

Description: Bump Stop Cup, Double Spring, 1.900 in OD, 1.705 in ID, 0.750 in Tall, 0.630 in Thru Hole, Aluminum, Black Anodize, 1 in Bump Spring, Each
Item #: PACPAC-C275
Condition: New
Limited Supply: Only 2 Left!
Same Day Shipping!
Ships from Michigan.
Price: $24.99
Sale: $22.88
Save: 8%
Save: $2.11
Qty:

Description: Bump Stop Cup, Double Spring, 1.900 in OD, 1.705 in ID, 0.750 in Tall, 0.505 in Thru Hole, Aluminum, Black Anodize, 1 in Bump Spring, Each
Item #: PACPAC-C271
Condition: New
Limited Supply: Only 7 Left!
Same Day Shipping!
Ships from Michigan.
Price: $25.99
Sale: $23.90
Save: 8%
Save: $2.09
Qty:

Description: Bump Stop Cup, Double Spring, 1.375 in OD, 1.190 in ID, 0.850 in Tall, 0.630 in Thru Hole, Aluminum, Black Anodize, 2 in Bump Spring, Each
Item #: PACPAC-C245
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Ships from Michigan.
Price: $22.99
Sale: $21.83
Save: 5%
Save: $1.16
Qty:

Description: Bump Stop Cup, Double Spring, 1.375 in OD, 1.190 in ID, 0.850 in Tall, 0.505 in Thru Hole, Aluminum, Black Anodize, 2 in Bump Spring, Each
Item #: PACPAC-C241
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Ships from Michigan.
Price: $22.99
Sale: $21.05
Save: 8%
Save: $1.94
Qty:

Description: Bump Stop Cup, Single Spring, 1.900 in OD, 1.705 in ID, 0.400 in Tall, 0.630 in Thru Hole, Aluminum, Black Anodize, 1 in Bump Spring, Each
Item #: PACPAC-C274
Condition: New
Limited Supply: Only 9 Left!
Same Day Shipping!
Ships from Michigan.
Price: $17.99
Sale: $16.64
Save: 8%
Save: $1.35
Qty:

Description: Bump Stop Cup, Single Spring, 1.900 in OD, 1.705 in ID, 0.400 in Tall, 0.505 in Thru Hole, Aluminum, Black Anodize, 1 in Bump Spring, Each
Item #: PACPAC-C270
Condition: New
Limited Supply: Only 6 Left!
Same Day Shipping!
Ships from Michigan.
Price: $17.99
Sale: $16.64
Save: 8%
Save: $1.35
Qty:

Description: Bump Stop Cup, Single Spring, 1.375 in OD, 1.190 in ID, 0.500 in Tall, 0.630 in Thru Hole, Aluminum, Black Anodize, 2 in Bump Spring, Each
Item #: PACPAC-C244
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Ships from Michigan.
Price: $15.99
Sale: $14.54
Save: 9%
Save: $1.45
Qty:

Description: Bump Stop Cup, Single Spring, 1.375 in OD, 1.190 in ID, 0.500 in Tall, 0.505 in Thru Hole, Aluminum, Black Anodize, 2 in Bump Spring, Each
Item #: PACPAC-C240
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Ships from Michigan.
Price: $14.99
Sale: $13.52
Save: 10%
Save: $1.47
Qty:

NEW!
Description: Steel C/M Spring Seats, 1.550 x .855 x .635
Item #: PACPAC-S102
Condition: New
Limited Supply: Only 1 Left!
Same Day Shipping!
Ships from Michigan.
Price: $66.99
Sale: $63.58
Save: 5%
Save: $3.41
Qty:

NEW!
No image available!
Description: Coil Spring, Coil-Over, 2.500 in ID, 6.000 in Length, 100 lb/in Spring Rate, Orange Powder Coat, Each
Item #: PACPAC-6X2.5X100
Condition: New
Limited Supply: Only 0 Left!
Same Day Shipping!
Ships from Michigan.
Price: $56.72
Sale: $55.00
Save: 3%
Save: $1.72
NEW!
No image available!
Description: Coil Spring, 2.500 in ID, 9.000 in Length, 100 lb/in Spring Rate, Orange Powder Coat, Pair
Item #: PACPAC-9X2.5X100
Condition: New
Limited Supply: Only 5 Left!
Same Day Shipping!
Ships from Michigan.
Price: $78.99
Sale: $75.00
Save: 5%
Save: $3.99
Qty:

NEW!
Description: 1.500 Dual Valve Spring (1pk)
Item #: PACPAC-1357-1
Condition: New
Limited Supply: Only 7 Left!
Same Day Shipping!
Ships from Michigan.
Price: $41.84
Qty:

Items 1-25 of 408

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.