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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Spring Rubber 5.0in OD 60 Durometer Purple SR.500.0060
EIBACH
$50.00Spring rubbers are critical components in suspension systems, providing progressive damping and vibration isolation for smooth, controlled handling. This 60-durometer polyurethane unit delivers consistent performance across repeated compression cycles...EIBSR.500.0060- SKU:
- EIBSR.500.0060
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
$50.00 -
Spring Rubber Coilover 90 Durometer Blue SR.2530.0090
EIBACH
$47.00If you're running a coilover suspension setup, controlling spring oscillation is critical to maintaining consistent handling and ride quality lap after lap. This 90-durometer polyurethane spring rubber isolates vibration and reduces noise while...EIBSR.2530.0090- SKU:
- EIBSR.2530.0090
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$47.00 -
Spring Rubber Coilover 80 Durometer Yellow SR.2530.0080
EIBACH
$47.00If you're running coilovers on your race car or performance build, isolating spring vibration and noise is critical to both driver comfort and suspension longevity. This 80 durometer polyurethane spring rubber absorbs shock energy and reduces harshness...EIBSR.2530.0080- SKU:
- EIBSR.2530.0080
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$47.00 -
Spring Rubber Coilover 70 Durometer Green SR.2530.0070
EIBACH
$47.00Coilover suspension systems demand precision vibration isolation, and worn or inadequate spring rubber compromises both ride quality and component longevity. This 70 Durometer polyurethane insert maintains consistent spring preload and dampens unwanted...EIBSR.2530.0070- SKU:
- EIBSR.2530.0070
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$47.00 -
Spring Rubber Coilover 60 Durometer Purple SR.2530.0060
EIBACH
$47.00If your coilover setup is experiencing excessive noise, vibration, or inconsistent damping feel, worn-out spring isolators are likely the culprit. This 60-durometer polyurethane spring rubber restores proper suspension geometry and eliminates that...EIBSR.2530.0060- SKU:
- EIBSR.2530.0060
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$47.00 -
Spring Rear 18in x 5in x 125# Platinum PR1800.500.0125
EIBACH
$150.00A properly tuned rear suspension starts with the right spring rate, and this Platinum coil spring delivers the 125 lb/in rate needed for predictable weight transfer and consistent cornering grip. Whether you're fine-tuning a track setup or building a...EIBPR1800.500.0125- SKU:
- EIBPR1800.500.0125
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
$150.00 -
Spring Rear 18in x 5in x 75# Platinum PR1800.500.0075
EIBACH
$150.00A properly tuned suspension starts with the right spring rate, and this 75 lb/in coil spring delivers the predictable, linear load support your rear end needs for consistent handling and weight transfer. Whether you're fine-tuning a track setup or...EIBPR1800.500.0075- SKU:
- EIBPR1800.500.0075
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
$150.00 -
Spring Rear 16in x 5in x 175# Platinum PR1600.500.0175
EIBACH
$145.00Upgrade your suspension geometry with a coil spring engineered for precision handling and consistent performance. The 175 lb/in rate delivers responsive body control without sacrificing ride quality, making it ideal for track applications, road racing,...EIBPR1600.500.0175- SKU:
- EIBPR1600.500.0175
- Availability:
- Ships Same Business Day
- Weight:
- 6.80 LBS
$145.00 -
Spring Rear 16in x 5in x 150# Platinum PR1600.500.0150
EIBACH
$145.00A quality rear coil spring is fundamental to your suspension's ability to handle loads, maintain ride height, and transfer power to the track effectively. The Platinum PR1600 delivers a crisp 150 lb/in spring rate in a compact 16-inch package, making it...EIBPR1600.500.0150- SKU:
- EIBPR1600.500.0150
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$145.00 -
Spring Rear 16in x 5in x 125# Platinum PR1600.500.0125
EIBACH
$145.00A properly matched rear coil spring is critical to maintaining consistent suspension geometry and weight transfer under load. This 125 lb/in spring rate delivers predictable handling characteristics for both street and track applications, while the...EIBPR1600.500.0125- SKU:
- EIBPR1600.500.0125
- Availability:
- Ships Same Business Day
- Weight:
- 8.00 LBS
$145.00 -
Spring Rear 16in x 5in x 100# Platinum PR1600.500.0100
EIBACH
$145.00Precision suspension tuning demands a spring rate matched exactly to your vehicle's weight distribution and driving demands. This 100 lb/in coil spring delivers predictable, linear load response without the inconsistency of worn OEM units. The platinum...EIBPR1600.500.0100- SKU:
- EIBPR1600.500.0100
- Availability:
- Ships Same Business Day
- Weight:
- 5.20 LBS
$145.00 -
Spring Rear 16in x 5in x 75# Platinum PR1600.500.0075
EIBACH
$145.00A precision-engineered coil spring is fundamental to any well-tuned suspension system, and this 75 lb/in spring delivers predictable, consistent support for rear-end geometry and load management. Whether you're dialing in your race car's handling balance...EIBPR1600.500.0075- SKU:
- EIBPR1600.500.0075
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$145.00 -
Spring Rear 16in x 5in x 50# Platinum PR1600.500.0050
EIBACH
$145.00Rear suspension geometry demands precision, and this 50# Platinum coil spring delivers the consistent rate and reliability required for repeatable track performance. Whether you're tuning a dedicated race car or optimizing your daily driver's handling...EIBPR1600.500.0050- SKU:
- EIBPR1600.500.0050
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$145.00 -
Spring Rear 13in x 5in x 225# Platinum PR1300.500.0225
EIBACH
$140.00A properly tuned rear suspension demands a spring that delivers predictable, consistent performance lap after lap. The Platinum PR1300.500.0225 coil spring provides the 225 lb/in rate you need for responsive handling without sacrificing ride quality,...EIBPR1300.500.0225- SKU:
- EIBPR1300.500.0225
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$140.00 -
Spring Rear 13in x 5in x 200# Platinum PR1300.500.0200
EIBACH
$140.00Maintaining consistent rear suspension geometry is critical for predictable handling and weight transfer during aggressive cornering or acceleration. This Platinum coil spring delivers a 200 lb/in rate specifically engineered for rear applications,...EIBPR1300.500.0200- SKU:
- EIBPR1300.500.0200
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$140.00 -
Spring Rear 13in x 5in x 175# Platinum PR1300.500.0175
EIBACH
$140.00A properly matched rear coil spring is critical for maintaining consistent suspension geometry and weight transfer during acceleration and braking. This Platinum PR1300 delivers a firm 175 lb/in rate that suits both street and track applications where...EIBPR1300.500.0175- SKU:
- EIBPR1300.500.0175
- Availability:
- Ships Same Business Day
- Weight:
- 4.88 LBS
$140.00Qty in Cart: 0Quantity:Price:$140.00Subtotal: -
Spring Rear 13in x 5in x 150# Platinum PR1300.500.0150
EIBACH
$140.00Proper rear suspension geometry depends on springs that maintain consistent ride height and support under load. The Platinum PR1300 delivers a 150 lb/in spring rate designed for rear-end applications where you need predictable handling characteristics...EIBPR1300.500.0150- SKU:
- EIBPR1300.500.0150
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$140.00Qty in Cart: 0Quantity:Price:$140.00Subtotal: -
Spring Rear 13in x 5in x 125# Platinum PR1300.500.0125
EIBACH
$140.00A properly matched rear spring is fundamental to suspension geometry and handling balance. The Platinum PR1300 delivers a 125 lb/in rate engineered for vehicles requiring responsive, predictable rear-end control without excessive compliance. Whether...EIBPR1300.500.0125- SKU:
- EIBPR1300.500.0125
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$140.00 -
Spring Rear 13in x 5in x 75# Platinum PR1300.500.0075
EIBACH
$140.00A properly tuned rear suspension starts with the right spring rate, and this 75 lb/in coil spring delivers the predictable, linear response your setup needs for consistent lap times and confident handling. Whether you're fine-tuning a road course...EIBPR1300.500.0075- SKU:
- EIBPR1300.500.0075
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$140.00Qty in Cart: 0Quantity:Price:$140.00Subtotal: -
16in C/O Spring Platinum 2.50in ID P1600.2530.0175
EIBACH
$145.00Coil-over suspension tuning demands springs engineered for precision—this 16-inch platinum spring delivers a 175 lb/in rate that balances responsive handling with consistent load support across varying track conditions. Whether you're fine-tuning a road...EIBP1600.2530.0175- SKU:
- EIBP1600.2530.0175
- Availability:
- Ships Same Business Day
- Weight:
- 6.08 LBS
$145.00
