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
-
Conventional Spring 9.5in x 5in 400LB 950-500-400
SWIFT SPRINGS
$128.35Conventional Spring 9.5in x 5in 400LBCoil SpringConventional5.0 in OD9.500 in Length400 lb/in Spring RateFrontBlack Powder CoatEachSWI950-500-400- 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
$128.35Conventional Spring 9.5in x 5in 375LBCoil SpringConventional5.0 in OD9.500 in Length375 lb/in Spring RateFrontBlack Powder CoatEachSWI950-500-375- 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
$128.35Conventional Spring 9.5in x 5in 350LBCoil SpringConventional5.0 in OD9.500 in Length350 lb/in Spring RateFrontBlack Powder CoatEachSWI950-500-350- 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 -
Conventional Spring 20in x 5in x 150lbs 200-500-150
SWIFT SPRINGS
$153.85Conventional Spring 20in x 5in x 150lbsCoil SpringConventional5.0 in OD20.000 in Length150 lb/in Spring RateRearBlack Powder CoatEachSWI200-500-150- SKU:
- SWI200-500-150
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
- Spring Rate:
- 150 lb.
- Spring Height:
- 20"
- Spring ID:
- 5"
$153.85Qty in Cart: 0Quantity:Price:$153.85Subtotal: -
Conv Rear Spring 18in x 5in 80LB 180-500-080
SWIFT SPRINGS
$128.35Conv Rear Spring 18in x 5in 80LBCoil SpringConventional5.0 in OD18.000 in Length80 lb/in Spring RateRearBlack Powder CoatEachSWI180-500-080- 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
$136.85Conventional Spring 16in x 5in 150lbCoil SpringConventional5.0 in OD16.000 in Length150 lb/in Spring RateRearCopper Powder CoatEachSWI160-500-150BP- 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
$136.85Conventional Spring 16in x 5in 125lbCoil SpringConventional5.0 in OD16.000 in Length125 lb/in Spring RateRearCopper Powder CoatEachSWI160-500-125BP- 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
$128.35Conventional Spring 16in x 5in 50lbCoil SpringConventional5.0 in OD16.000 in Length50 lb/in Spring RateRearBlack Powder CoatEachSWI160-500-050- 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
$128.35Coil-Over Spring 16in 2.50in 50lbsCoil SpringBarrelCoil-Over2.500 in ID16.000 in Length50 lb/in Spring RateBlack Powder CoatEachSWI160-250-050B- 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
$128.35Conventional Spring 13in x 5in 275LBCoil SpringConventional5.0 in OD13.000 in Length275 lb/in Spring RateRearBlack Powder CoatEachSWI130-500-275- 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
$136.85Conventional Spring 13in x 5in 125LBCoil SpringConventional5.0 in OD13.000 in Length125 lb/in Spring RateRearCopper Powder CoatEachSWI130-500-125BP- 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 -
Conventional Spring 13in x 5in 100LB 130-500-100 BP
SWIFT SPRINGS
$136.85Conventional Spring 13in x 5in 100LBCoil SpringConventional5.0 in OD13.000 in Length100 lb/in Spring RateRearCopper Powder CoatEachSWI130-500-100BP- SKU:
- SWI130-500-100BP
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- Spring Rate:
- 100 lb.
- Spring Height:
- 13"
- Spring ID:
- 5"
$136.85 -
Coilover Spring 12in x 2.5in x 500lb 120-250-500 B
SWIFT SPRINGS
$119.85Coilover Spring 12in x 2.5in x 500lbCoil SpringBarrelCoil-Over2.500 in ID12.000 in Length500 lb/in Spring RateBlack Powder CoatEachSWI120-250-500B- SKU:
- SWI120-250-500B
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- Spring Rate:
- 500 lb.
- Spring Height:
- 12"
- Spring ID:
- 2.5"
$119.85 -
Coilover Spring 12in x 2.5in x 450lb 120-250-450 B
SWIFT SPRINGS
$111.35Coilover Spring 12in x 2.5in x 450lbCoil SpringBarrelCoil-Over2.500 in ID12.000 in Length450 lb/in Spring RateBlack Powder CoatEachSWI120-250-450B- SKU:
- SWI120-250-450B
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
- Spring Rate:
- 450 lb.
- Spring Height:
- 12"
- Spring ID:
- 2.5"
$111.35Qty in Cart: 0Quantity:Price:$111.35Subtotal: -
Coilover Spring 12in x 2.5in 150/400 Prog 120-250-400V
SWIFT SPRINGS
$145.35Coilover Spring 12in x 2.5in 150/400 ProgCoil Spring KitConventionalProgressiveBarrel Type2.5 in ID12 in Length150 / 400 lb/in Spring RateSteelBlack Powder CoatKitSWI120-250-400V- SKU:
- SWI120-250-400V
- Availability:
- Ships Same Business Day
- Weight:
- 7.20 LBS
- Spring Height:
- 12"
- Spring ID:
- 2.5"
$145.35 -
Coilover Spring 12in x 2.5in x 375lb 120-250-375 B
SWIFT SPRINGS
$111.35Coilover Spring 12in x 2.5in x 375lbCoil SpringBarrelCoil-Over2.500 in ID12.000 in Length375 lb/in Spring RateBlack Powder CoatEachSWI120-250-375B- SKU:
- SWI120-250-375B
- Availability:
- Ships Same Business Day
- Weight:
- 6.35 LBS
- Spring Rate:
- 375 lb.
- Spring Height:
- 12"
- Spring ID:
- 2.5"
$111.35 -
Coilover Spring 12in x 2.5in 140/225 Prog 120-250-225V
SWIFT SPRINGS
$145.35Coilover Spring 12in x 2.5in 140/225 ProgCoil Spring KitConventionalProgressiveBarrel Type2.5 in ID12 in Length140 / 225 lb/in Spring RateSteelBlack Powder CoatKitSWI120-250-225V- SKU:
- SWI120-250-225V
- Availability:
- Ships Same Business Day
- Weight:
- 5.20 LBS
- Spring Height:
- 12"
- Spring ID:
- 2.5"
$145.35 -
Conv Front Spring 11in x 5in 425LB 110-500-425F
SWIFT SPRINGS
$119.85Conv Front Spring 11in x 5in 425LBCoil SpringConventional5.0 in OD11.000 in Length425 lb/in Spring RateFrontBlack Powder CoatEachSWI110-500-425F- SKU:
- SWI110-500-425F
- Availability:
- Ships Same Business Day
- Weight:
- 11.50 LBS
- Spring Rate:
- 425 lb.
- Spring Height:
- 11"
- Spring ID:
- 5"
$119.85 -
Conv Front Spring 11in x 5in 400LB 110-500-400F
SWIFT SPRINGS
$119.85Conv Front Spring 11in x 5in 400LBCoil SpringConventional5.0 in OD11.000 in Length400 lb/in Spring RateFrontBlack Powder CoatEachSWI110-500-400F- SKU:
- SWI110-500-400F
- Availability:
- Ships Same Business Day
- Weight:
- 7.60 LBS
- Spring Rate:
- 400 lb.
- Spring Height:
- 11"
- Spring ID:
- 5"
$119.85 -
Conv Front Spring 11in x 5in 350LB 110-500-350F
SWIFT SPRINGS
$119.85Conv Front Spring 11in x 5in 350LBCoil SpringConventional5.0 in OD11.000 in Length350 lb/in Spring RateFrontBlack Powder CoatEachSWI110-500-350F- SKU:
- SWI110-500-350F
- Availability:
- Ships Same Business Day
- Weight:
- 11.50 LBS
- Spring Rate:
- 350 lb.
- Spring Height:
- 11"
- Spring ID:
- 5"
$119.85
