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
-
Spring QM 5in x 1.63in ID 125lbs 752-125
TANNER
$23.99A properly tuned suspension starts with the right spring rate for your application. This 125 lb/in coil spring delivers responsive handling and consistent load support for dedicated coil-over setups, whether you're dialing in a street-legal track car or...TAN752-125- SKU:
- TAN752-125
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
$23.99Qty in Cart: 0Quantity:Price:$23.99Subtotal: -
Spring QM 5in x 1.63in ID 120lbs 752-120
TANNER
$23.99A properly tuned coil-over spring is fundamental to chassis control and handling precision. This 120 lb/in spring rate delivers responsive suspension geometry without sacrificing ride quality, making it ideal for both road course setups and aggressive...TAN752-120- SKU:
- TAN752-120
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
$23.99Qty in Cart: 0Quantity:Price:$23.99Subtotal: -
Spring QM 5in x 1.63in ID 110lbs 752-110
TANNER
$23.99A properly matched coil spring is fundamental to suspension geometry and vehicle handling. This 110 lb/in spring delivers predictable load support and consistent ride height, making it ideal for coil-over applications where precision tuning matters...TAN752-110- SKU:
- TAN752-110
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
$23.99Qty in Cart: 0Quantity:Price:$23.99Subtotal: -
Slider Short Stack Guide Model SP250-S
SWIFT SPRINGS
$68.00Precision slider short stack guides are essential for maintaining consistent clutch engagement and preventing spring migration during high-RPM shifts. The SP250-S delivers reliable spring positioning with minimal stack height, making it ideal for tight...SWISP250-S- SKU:
- SWISP250-S
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$68.00Qty in Cart: 0Quantity:Price:$68.00Subtotal: -
Slider Long Stack Guide Model SP250-L
SWIFT SPRINGS
$68.00Consistent spring pressure is critical for reliable clutch engagement, and the Slider Long Stack Guide SP250-L eliminates the guesswork. This aluminum spring guide maintains precise takeup geometry, ensuring your clutch modulates smoothly through the...SWISP250-L- SKU:
- SWISP250-L
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$68.00 -
Conventional Springs 9.5 x 5.5in x 650lbs 950-550-650
SWIFT SPRINGS
$128.35A properly matched front coil spring is critical for maintaining suspension geometry and ride quality under load. This 650 lb/in conventional spring delivers the stiffness needed for responsive handling while preserving comfort on street and light...SWI950-550-650- SKU:
- SWI950-550-650
- Availability:
- Ships Same Business Day
- Weight:
- 7.60 LBS
- Spring Rate:
- 650 lb.
- Spring Height:
- 9.5"
- Spring ID:
- 5.5"
$128.35 -
Conventional Springs 9.5 x 5.5in x 600lbs 950-550-600
SWIFT SPRINGS
$128.35A properly tuned front suspension demands springs engineered for precision and consistency. This 600 lb/in conventional coil spring delivers the responsive handling and load support serious racers and performance builders expect, whether you're dialing...SWI950-550-600- SKU:
- SWI950-550-600
- Availability:
- Ships Same Business Day
- Weight:
- 8.20 LBS
- Spring Rate:
- 600 lb.
- Spring Height:
- 9.5"
- Spring ID:
- 5.5"
$128.35Qty in Cart: 0Quantity:Price:$128.35Subtotal: -
Conventional Spring 9.5in x 5in 700LB 950-500-700
SWIFT SPRINGS
$128.35A stiffer spring rate delivers sharper weight transfer and more predictable chassis behavior under hard acceleration—essential for serious racers and high-performance street builds. At 700 lb/in, this conventional spring provides the stiffness needed to...SWI950-500-700- SKU:
- SWI950-500-700
- Availability:
- Ships Same Business Day
- Weight:
- 8.00 LBS
- Spring Rate:
- 700 lb.
- Spring Height:
- 9.5"
- Spring ID:
- 5"
$128.35 -
Conventional Spring 9.5in x 5in 475LB 950-500-475
SWIFT SPRINGS
$128.35A properly tuned suspension starts with the right spring rate, and this 475 lb/in conventional spring delivers predictable front-end geometry and consistent load support for both street and track applications. Whether you're fine-tuning a dedicated race...SWI950-500-475- SKU:
- SWI950-500-475
- Availability:
- Ships Same Business Day
- Weight:
- 6.80 LBS
- Spring Rate:
- 475 lb.
- Spring Height:
- 9.5"
- Spring ID:
- 5"
$128.35 -
Conventional Spring 9.5in x 5in 425LB 950-500-425
SWIFT SPRINGS
$128.35A properly tuned front suspension starts with the right spring rate. This conventional coil spring delivers the 425 lb/in stiffness needed for responsive handling and consistent load support without sacrificing ride quality. Whether you're fine-tuning a...SWI950-500-425- SKU:
- SWI950-500-425
- Availability:
- Ships Same Business Day
- Weight:
- 5.70 LBS
- Spring Rate:
- 425 lb.
- Spring Height:
- 9.5"
- Spring ID:
- 5"
$128.35 -
Conventional Spring 9.5in x 5in 400LB 950-500-400
SWIFT SPRINGS
$128.35A properly tuned suspension starts with the right spring rate, and this 400 lb/in conventional coil spring delivers the stiffness needed for responsive front-end geometry and consistent load transfer during acceleration and braking. Whether you're...SWI950-500-400- SKU:
- SWI950-500-400
- Availability:
- Ships Same Business Day
- Weight:
- 6.80 LBS
- Spring Rate:
- 400 lb.
- Spring Height:
- 9.5"
- Spring ID:
- 5"
$128.35 -
Conventional Spring 9.5in x 5in 375LB 950-500-375
SWIFT SPRINGS
$128.35A properly tuned suspension starts with the right spring rate, and this 375 lb/in conventional coil spring delivers consistent, predictable front-end geometry for both street and track applications. Whether you're fine-tuning your setup or replacing a...SWI950-500-375- SKU:
- SWI950-500-375
- Availability:
- Ships Same Business Day
- Weight:
- 12.00 LBS
- Spring Rate:
- 375 lb.
- Spring Height:
- 9.5"
- Spring ID:
- 5"
$128.35 -
Conventional Spring 9.5in x 5in 350LB 950-500-350
SWIFT SPRINGS
$128.35A properly tuned front suspension starts with the right spring rate, and this 350 lb/in conventional coil spring delivers the responsive handling characteristics serious racers and performance enthusiasts demand. The 9.5-inch length and 5-inch OD...SWI950-500-350- SKU:
- SWI950-500-350
- Availability:
- Ships Same Business Day
- Weight:
- 5.40 LBS
- Spring Rate:
- 350 lb.
- Spring Height:
- 9.5"
- Spring ID:
- 5"
$128.35 -
Conv Rear Spring 18in x 5in 80LB 180-500-080
SWIFT SPRINGS
$128.35If you're building a lightweight or compact rear suspension setup, this conventional coil spring delivers the linear support you need without the complexity of progressive-rate designs. At 80 lb/in, it's ideal for street machines, vintage restorations,...SWI180-500-080- SKU:
- SWI180-500-080
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
- Spring Rate:
- 80 lb.
- Spring Height:
- 18"
- Spring ID:
- 5"
$128.35 -
Conventional Spring 16in x 5in 150lb 160-500-150 BP
SWIFT SPRINGS
$136.85A properly matched rear spring is fundamental to suspension geometry and handling balance. This 150 lb/in conventional coil spring delivers predictable load support and consistent ride characteristics for rear-end applications. Whether you're fine-tuning...SWI160-500-150BP- SKU:
- SWI160-500-150BP
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- Spring Rate:
- 150 lb.
- Spring Height:
- 16"
- Spring ID:
- 5"
$136.85 -
Conventional Spring 16in x 5in 125lb 160-500-125 BP
SWIFT SPRINGS
$136.85A properly matched rear spring is foundational to consistent suspension geometry and predictable handling characteristics. This 125 lb/in conventional coil spring delivers reliable support for vehicles requiring moderate spring rates, making it an ideal...SWI160-500-125BP- SKU:
- SWI160-500-125BP
- Availability:
- Ships Same Business Day
- Weight:
- 6.30 LBS
- Spring Rate:
- 125 lb.
- Spring Height:
- 16"
- Spring ID:
- 5"
$136.85 -
Conventional Spring 16in x 5in 50lb 160-500-050
SWIFT SPRINGS
$128.35A properly tuned suspension starts with the right spring rates for your application. This 50 lb/in conventional coil spring delivers predictable, linear rate characteristics ideal for street and road course setups where consistent feedback and compliance...SWI160-500-050- SKU:
- SWI160-500-050
- Availability:
- Ships Same Business Day
- Weight:
- 4.90 LBS
- Spring Rate:
- 50 lb.
- Spring Height:
- 16"
- Spring ID:
- 5"
$128.35 -
Coil-Over Spring 16in 2.50in 50lbs 160-250-050 B
SWIFT SPRINGS
$128.35A properly tuned suspension demands springs matched to your specific setup—and this 50 lb/in coil-over spring delivers predictable, linear rate performance for street and track applications. Whether you're fine-tuning a road course car or building a...SWI160-250-050B- SKU:
- SWI160-250-050B
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- Spring Rate:
- 50 lb.
- Spring Height:
- 16"
- Spring ID:
- 2.5"
$128.35 -
Conventional Spring 13in x 5in 275LB 130-500-275
SWIFT SPRINGS
$128.35Rear suspension geometry demands precise spring rates to maintain consistent ride height, load transfer characteristics, and chassis balance—especially under acceleration or braking. This 275 lb/in conventional spring delivers the stiffness needed for...SWI130-500-275- SKU:
- SWI130-500-275
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- Spring Rate:
- 275 lb.
- Spring Height:
- 13"
- Spring ID:
- 5"
$128.35 -
Conventional Spring 13in x 5in 125LB 130-500-125 BP
SWIFT SPRINGS
$136.85Rear suspension geometry demands precision, and this conventional coil spring delivers the consistent, predictable performance your setup requires. With a 125 lb/in spring rate, you're getting a dependable baseline for street and moderate performance...SWI130-500-125BP- SKU:
- SWI130-500-125BP
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
- Spring Rate:
- 125 lb.
- Spring Height:
- 13"
- Spring ID:
- 5"
$136.85
