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 4in Tall 184B0700
HYPERCO
$86.00A properly tuned coil-over spring is fundamental to achieving consistent suspension geometry and predictable handling characteristics on track or strip. The Hyperco 184B0700 delivers a stiff 700 lb/in rate in a compact 4-inch package, ideal for vehicles...HYP184B0700- SKU:
- HYP184B0700
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MFG Part #:
- 184B0700
$86.00 -
Hyperco Coil Over Spring 2.5in ID 4in Tall 184B0600
HYPERCO
$86.00If you're building a serious suspension setup, spring rate is everything—and this Hyperco coil-over delivers the 600 lb/in stiffness needed for responsive handling and consistent load control under demanding conditions. The compact 4-inch height and 2...HYP184B0600- SKU:
- HYP184B0600
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- MFG Part #:
- 184B0600
$86.00 -
Hyperco Coil Over Spring 2.5in ID 4in Tall 184B0500
HYPERCO
$86.00Fine-tuning your suspension geometry requires a spring that responds precisely to your setup demands—this Hyperco coil-over delivers consistent 500 lb/in rate for predictable handling characteristics across varying load conditions. Whether you're dialing...HYP184B0500- SKU:
- HYP184B0500
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MFG Part #:
- 184B0500
$86.00 -
Hyperco Coil Over Spring 2.5in ID 4in Tall 184B0450
HYPERCO
$86.00If you're tuning a coil-over suspension system, spring rate is everything—and the 450 lb/in rate on this Hyperco spring delivers the responsive, predictable handling you need for autocross, road course, or street performance applications. With a compact...HYP184B0450- SKU:
- HYP184B0450
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- MFG Part #:
- 184B0450
$86.00 -
Hyperco Coil Over Spring 2.5in ID 4in Tall 184B0400
HYPERCO
$86.00If you're building a coil-over suspension system that demands precise spring rates and reliable performance under sustained load, the Hyperco 184B0400 delivers the stiffness you need without compromise. This 400 lb/in spring is engineered for...HYP184B0400- SKU:
- HYP184B0400
- Availability:
- Ships Same Business Day
- Weight:
- 1.17 LBS
- MFG Part #:
- 184B0400
$86.00Qty in Cart: 0Quantity:Price:$86.00Subtotal: -
Hyperco Coil Over Spring 2.5in ID 4in Tall 184B0350
HYPERCO
$86.00If you're building a custom suspension setup or upgrading your coil-over kit, you need a spring that delivers predictable handling without compromise. The Hyperco 184B0350 offers a stiff 350 lb/in rate in a compact 4-inch package, ideal for applications...HYP184B0350- SKU:
- HYP184B0350
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- MFG Part #:
- 184B0350
$86.00Qty in Cart: 0Quantity:Price:$86.00Subtotal: -
Hyperco Coil Over Spring 2.5in Id 5in OD 18in Tall 1818SB095
HYPERCO
$135.00If you're building a serious off-road suspension setup, spring rate consistency and predictability are non-negotiable. The Hyperco 1818SB095 delivers a precision-engineered 95 lb/in spring rate that pairs seamlessly with coil-over shock absorbers, giving...HYP1818SB095- SKU:
- HYP1818SB095
- Availability:
- Ships Same Business Day
- Weight:
- 5.70 LBS
- MFG Part #:
- 1818SB095
$135.00 -
Hyperco Coil Over Spring 2.5in Id 5in OD 18in Tall 1818SB0110
HYPERCO
$135.00Built for off-road suspension systems where precision and reliability matter, the Hyperco Coil Over Spring delivers consistent load support without compromise. This purpose-engineered spring handles the demands of lifted suspensions and custom coil-over...HYP1818SB0110- SKU:
- HYP1818SB0110
- Availability:
- Ships Same Business Day
- Weight:
- 6.20 LBS
- MFG Part #:
- 1818SB0110
$135.00 -
Hyperco Coil Over Spring 2.5in ID 5in OD 16in Tall 1816SB0125
HYPERCO
$135.00If you're building a serious off-road suspension setup, you need springs that can handle repeated articulation without sagging or binding. The Hyperco 1816SB0125 delivers predictable, linear suspension response with a moderate 125 lb/in rate—ideal for...HYP1816SB0125- SKU:
- HYP1816SB0125
- Availability:
- Ships Same Business Day
- Weight:
- 5.50 LBS
- MFG Part #:
- 1816SB0125
$135.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B085
HYPERCO
$90.00Coil-over suspension setups demand precision-engineered springs that maintain consistent dampening across the full range of motion—and this Hyperco spring delivers exactly that. With its moderate 85 lb/in rate, it's ideal for street-driven performance...HYP1814B085- SKU:
- HYP1814B085
- Availability:
- Ships Same Business Day
- Weight:
- 2.96 LBS
- MFG Part #:
- 1814B085
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0500
HYPERCO
$90.00A 500 lb/in spring rate gives you the responsiveness and control needed for precision suspension tuning on both road course and autocross applications. The 14-inch length and 2.5-inch ID design fits most coil-over kits without compromise, letting you...HYP1814B0500- SKU:
- HYP1814B0500
- Availability:
- Ships Same Business Day
- Weight:
- 8.60 LBS
- MFG Part #:
- 1814B0500
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0450
HYPERCO
$90.00If you're building a suspension system that demands precision tuning and consistent performance across varied track conditions, the Hyperco Coil Over Spring delivers the reliability you need. With a 450 lb/in spring rate, this coil-over is engineered for...HYP1814B0450- SKU:
- HYP1814B0450
- Availability:
- Ships Same Business Day
- Weight:
- 8.01 LBS
- MFG Part #:
- 1814B0450
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0400
HYPERCO
$90.00A properly tuned coil-over spring is foundational to suspension geometry and vehicle dynamics—this Hyperco unit delivers the stiffness needed for consistent cornering loads and predictable handling without sacrificing adjustability. Whether you're...HYP1814B0400- SKU:
- HYP1814B0400
- Availability:
- Ships Same Business Day
- Weight:
- 7.71 LBS
- MFG Part #:
- 1814B0400
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0375
HYPERCO
$90.00Precision suspension tuning demands a spring rate that matches your setup's geometry and weight distribution—this 375 lb/in Hyperco coil-over delivers repeatable performance for both street and track applications. Whether you're fine-tuning a road course...HYP1814B0375- SKU:
- HYP1814B0375
- Availability:
- Ships Same Business Day
- Weight:
- 6.72 LBS
- MFG Part #:
- 1814B0375
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0350
HYPERCO
$90.00Fine-tuning your suspension geometry requires a spring that delivers predictable, consistent rates across the entire compression range—and the Hyperco 1814B0350 coil-over spring does exactly that. With a stiff 350 lb/in rate, this spring is engineered...HYP1814B0350- SKU:
- HYP1814B0350
- Availability:
- Ships Same Business Day
- Weight:
- 6.79 LBS
- MFG Part #:
- 1814B0350
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0325
HYPERCO
$90.00If you're building a performance suspension system or upgrading an existing coil-over setup, spring rate is everything—it directly controls how your chassis responds to load transfer, braking, and cornering forces. The Hyperco 1814B0325 delivers a stiff...HYP1814B0325- SKU:
- HYP1814B0325
- Availability:
- Ships Same Business Day
- Weight:
- 6.40 LBS
- MFG Part #:
- 1814B0325
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0300
HYPERCO
$90.00Fine-tuning your suspension geometry requires a spring rate that matches your chassis setup and driving style—this Hyperco coil-over delivers the 300 lb/in stiffness needed for consistent, predictable handling without compromising ride quality. Whether...HYP1814B0300- SKU:
- HYP1814B0300
- Availability:
- Ships Same Business Day
- Weight:
- 6.07 LBS
- MFG Part #:
- 1814B0300
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0275
HYPERCO
$90.00A properly tuned suspension requires the right spring rate for your specific weight transfer and handling characteristics—this Hyperco coil-over delivers predictable, linear spring behavior that serious racers depend on. With a 275 lb/in rate and compact...HYP1814B0275- SKU:
- HYP1814B0275
- Availability:
- Ships Same Business Day
- Weight:
- 5.55 LBS
- MFG Part #:
- 1814B0275
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0250
HYPERCO
$90.00If you're building a custom suspension setup or upgrading your coil-over system, spring rate consistency is critical to achieving predictable handling and ride quality. The Hyperco 1814B0250 delivers a proven 250 lb/in rate in a compact 14-inch package,...HYP1814B0250- SKU:
- HYP1814B0250
- Availability:
- Ships Same Business Day
- Weight:
- 5.27 LBS
- MFG Part #:
- 1814B0250
$90.00 -
Hyperco Coil Over Spring 2.5in ID 14in Tall 1814B0225
HYPERCO
$90.00Precision suspension tuning demands a spring that matches your setup's exact requirements—this Hyperco coil-over delivers the stiffness you need without compromise. At 225 lb/in, it's engineered for dedicated track builds and performance-focused street...HYP1814B0225- SKU:
- HYP1814B0225
- Availability:
- Ships Same Business Day
- Weight:
- 5.15 LBS
- MFG Part #:
- 1814B0225
$90.00
