Suspension and Components
Circle Track Suspension Parts: Control Arms, Shocks & Springs for IMCA & Late Models at JJ Motorsports
Optimize handling and stability on the track with premium circle track suspension components from JJ Motorsports. Our selection includes control arms, shocks, springs, weight jacks, and more, designed for superior cornering, durability, and performance in late models, modifieds, street stocks, and IMCA dirt racing. Compatible with GM Metric frames and other setups, these high-quality parts ensure reliable operation and enhanced traction under intense racing conditions.
Shop trusted brands like Allstar Performance. Explore related categories such as circle track steering and components for precision control or circle track brakes for stopping power.
Top Circle Track Suspension Products
- Lower Control Arm Kit for 1978-88 GM Metric Street Stock & Hobby Stock, Includes Ball Joints & Greasable Bushings – This kit includes stamped steel lower control arms with black powdercoat finish, greasable bushings, and weld-in greasable ball joints for enhanced suspension performance. It is compatible with 1978-88 GM Metric G-Body vehicles and designed for street stock and hobby stock racing applications.
- Allstar Performance Metric Upper Control Arm Left 9in ALL57984 – This tubular upper control arm is designed for the driver side on GM Metric Frames, measuring 9.00 inches long with a bolt-in ball joint and steel construction finished in black powder coat. It features greasable pivot points and is ideal for hobby stock race cars, providing a perfect fit and function.
- Spring Cup Weight Jack Bolt Combo ONE PAIR IMCA Modified Dirt USRA B-Mod Cups – This kit includes two 8" long steel jack bolts with 1-8 course threads and two steel spring cups with a 5-inch outer diameter. It is designed for IMCA Modified, Dirt, and USRA B-Mod cups.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0500
HYPERCO
$86.00A properly tuned suspension demands springs engineered to precise specifications, and the Hyperco 1812B0500 delivers exactly that with a 500 lb/in rate optimized for coil-over applications. Whether you're building a dedicated track car, dialing in a road...HYP1812B0500- SKU:
- HYP1812B0500
- Availability:
- Ships Same Business Day
- Weight:
- 6.43 LBS
- MFG Part #:
- 1812B0500
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0475
HYPERCO
$86.00Fine-tuning your suspension geometry requires a spring that delivers consistent, predictable rates without compromise. The Hyperco 1812B0475 coil-over spring provides the 475 lb/in rate you need for precision handling in road racing, autocross, and...HYP1812B0475- SKU:
- HYP1812B0475
- Availability:
- Ships Same Business Day
- Weight:
- 6.21 LBS
- MFG Part #:
- 1812B0475
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0450
HYPERCO
$86.00Coil-over springs are fundamental to any serious suspension setup, and the Hyperco 1812B0450 delivers the consistent spring rate you need for predictable handling and reliable performance across repeated heat cycles. With a 450 lb/in rate and 12-inch...HYP1812B0450- SKU:
- HYP1812B0450
- Availability:
- Ships Same Business Day
- Weight:
- 6.10 LBS
- MFG Part #:
- 1812B0450
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0425
HYPERCO
$86.00If you're building a dedicated track car or street-strip machine, spring rate consistency is everything—and a 425 lb/in coil-over spring delivers the predictable, linear response you need for dialed-in suspension geometry. The Hyperco 1812B0425 is...HYP1812B0425- SKU:
- HYP1812B0425
- Availability:
- Ships Same Business Day
- Weight:
- 6.19 LBS
- MFG Part #:
- 1812B0425
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0400
HYPERCO
$86.00A properly tuned coil-over spring is fundamental to suspension geometry and handling precision—this Hyperco unit delivers predictable, linear spring rates essential for dialing in your setup on track or at the strip. At 400 lb/in, this spring hits the...HYP1812B0400- SKU:
- HYP1812B0400
- Availability:
- Ships Same Business Day
- Weight:
- 5.14 LBS
- MFG Part #:
- 1812B0400
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0375
HYPERCO
$86.00A coil-over spring is fundamental to building a responsive suspension geometry that handles both street driving and track work. The Hyperco 1812B0375 delivers a mid-range spring rate that balances ride comfort with predictable chassis dynamics, making it...HYP1812B0375- SKU:
- HYP1812B0375
- Availability:
- Ships Same Business Day
- Weight:
- 5.32 LBS
- MFG Part #:
- 1812B0375
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0350
HYPERCO
$86.00A properly tuned coil-over spring is fundamental to suspension geometry and handling precision. This Hyperco 350 lb/in spring delivers the stiffness needed for consistent body control during aggressive cornering and braking, while the 12-inch length...HYP1812B0350- SKU:
- HYP1812B0350
- Availability:
- Ships Same Business Day
- Weight:
- 5.50 LBS
- MFG Part #:
- 1812B0350
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0325
HYPERCO
$86.00A properly-tuned coil-over suspension system demands springs engineered for precision and consistency, and the Hyperco 1812B0325 delivers both. With a 325 lb/in spring rate and 12-inch height, this spring provides the responsive handling and...HYP1812B0325- SKU:
- HYP1812B0325
- Availability:
- Ships Same Business Day
- Weight:
- 4.74 LBS
- MFG Part #:
- 1812B0325
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0300
HYPERCO
$86.00If you're building a serious suspension setup or upgrading your coil-over system, you need a spring that delivers predictable, linear rate characteristics without compromise. The Hyperco 1812B0300 offers the 300 lb/in stiffness required for precise load...HYP1812B0300- SKU:
- HYP1812B0300
- Availability:
- Ships Same Business Day
- Weight:
- 4.52 LBS
- MFG Part #:
- 1812B0300
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0275
HYPERCO
$86.00If you're running a dedicated coil-over suspension setup, you need springs that deliver consistent, predictable support under variable loads. The Hyperco 1812B0275 provides the precise 275 lb/in rate required for fine-tuned suspension geometry and driver...HYP1812B0275- SKU:
- HYP1812B0275
- Availability:
- Ships Same Business Day
- Weight:
- 4.41 LBS
- MFG Part #:
- 1812B0275
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0250
HYPERCO
$86.00If you're building or upgrading a performance suspension system, spring rate consistency is everything—and the Hyperco 1812B0250 delivers the precise 250 lb/in rate your coil-over setup demands. This steel spring is engineered for reliability in both...HYP1812B0250- SKU:
- HYP1812B0250
- Availability:
- Ships Same Business Day
- Weight:
- 4.27 LBS
- MFG Part #:
- 1812B0250
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0225
HYPERCO
$86.00If you're building a custom suspension setup or upgrading your coil-over system, spring rate consistency is everything—too soft and you lose responsiveness, too stiff and you compromise ride quality. The Hyperco 1812B0225 delivers a proven 225 lb/in rate...HYP1812B0225- SKU:
- HYP1812B0225
- Availability:
- Ships Same Business Day
- Weight:
- 4.13 LBS
- MFG Part #:
- 1812B0225
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0200
HYPERCO
$86.00A proper coil-over spring is the foundation of responsive suspension tuning—this Hyperco unit delivers the predictable 200 lb/in rate you need for consistent handling and adjustability across various track conditions. Whether you're fine-tuning a road...HYP1812B0200- SKU:
- HYP1812B0200
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- MFG Part #:
- 1812B0200
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0185
HYPERCO
$86.00Precision suspension tuning demands a spring that delivers consistent, predictable performance lap after lap. The Hyperco 1812B0185 coil-over spring combines a moderate 185 lb/in rate with a compact 12-inch height, making it an ideal choice for custom...HYP1812B0185- SKU:
- HYP1812B0185
- Availability:
- Ships Same Business Day
- Weight:
- 3.42 LBS
- MFG Part #:
- 1812B0185
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0175
HYPERCO
$86.00Coil-over suspension tuning demands precision springs that deliver consistent spring rates across the full stroke—and the Hyperco 1812B0175 is engineered for exactly that. A 175 lb/in rate in a 12-inch package gives you the stiffness needed for...HYP1812B0175- SKU:
- HYP1812B0175
- Availability:
- Ships Same Business Day
- Weight:
- 3.28 LBS
- MFG Part #:
- 1812B0175
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0150
HYPERCO
$86.00A properly matched coil-over spring is critical to achieving consistent suspension geometry and predictable handling characteristics on the track or street. This Hyperco spring delivers a 150 lb/in rate in a compact 12-inch package, making it ideal for...HYP1812B0150- SKU:
- HYP1812B0150
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- MFG Part #:
- 1812B0150
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0125
HYPERCO
$86.00A properly matched coil-over spring is fundamental to achieving consistent suspension geometry and predictable handling characteristics. This Hyperco spring delivers a moderate 125 lb/in spring rate, making it ideal for street-performance applications...HYP1812B0125- SKU:
- HYP1812B0125
- Availability:
- Ships Same Business Day
- Weight:
- 2.82 LBS
- MFG Part #:
- 1812B0125
$86.00 -
Hyperco Coil Over Spring 2.5in ID 12in Tall 1812B0110
HYPERCO
$86.00A quality coil-over spring is the foundation of responsive suspension tuning, and the Hyperco 1812B0110 delivers the precision geometry and material consistency that separates controlled handling from unpredictable performance. With a moderate 110 lb/in...HYP1812B0110- SKU:
- HYP1812B0110
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- MFG Part #:
- 1812B0110
$86.00 -
Hyperco Coil Over Spring 3in ID 10in Tall 1.81E+83
HYPERCO
$108.00Whether you're building a dedicated off-road rig or fine-tuning suspension geometry for track use, coil-over springs are fundamental to dialing in ride height and spring rate. The Hyperco 3-inch ID coil-over delivers a predictable 80 lb/in rate in a...HYP1810E080- SKU:
- HYP1810E080
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- MFG Part #:
- 1.81E+83
$108.00 -
Hyperco Coil Over Spring 3in ID 10in Tall 1.81E+153
HYPERCO
$108.00If you're building a serious off-road suspension setup, you need a coil-over spring engineered for real-world performance demands. The Hyperco 3-inch ID coil-over delivers consistent spring rates and durability across rough terrain, giving you the...HYP1810E0150- SKU:
- HYP1810E0150
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- MFG Part #:
- 1.81E+153
$108.00
