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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On Sale
U-B Upper A Arm 8 Steel Offset Ball Joint Style 15-0809-5R
U-B MACHINE
MSRP: $122.99Now: $119.30Was: $122.99A worn or bent upper control arm directly compromises your suspension geometry, leading to unpredictable handling and accelerated tire wear. This U-B upper A-arm restores precise wheel alignment and steering response with a rigid tubular design that...UBM15-0809-5R- SKU:
- UBM15-0809-5R
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- MFG Part #:
- 15-0809-5R
MSRP: $122.99Now: $119.30Was: $122.99 -
On Sale
U-B Upper A Arm 8 Steel Ball Joint Plate Style 15-0804
U-B MACHINE
MSRP: $113.99Now: $110.57Was: $113.99A quality upper control arm is fundamental to suspension geometry, steering response, and long-term durability in any performance build. The U-B Upper A Arm delivers a rigid tubular design with a replaceable ball joint, giving you the adjustability and...UBM15-0804- SKU:
- UBM15-0804
- Availability:
- Ships Same Business Day
- Weight:
- 3.18 LBS
- MFG Part #:
- 15-0804
MSRP: $113.99Now: $110.57Was: $113.99 -
On Sale
U-B Caster Slug .500 Offset 15-0040-E
U-B MACHINE
MSRP: $13.99Now: $13.57Was: $13.99Caster adjustment is critical for dialing in your suspension geometry, and the U-B Caster Slug gives you precise, repeatable control without fabrication. Whether you're fine-tuning street alignment or optimizing track geometry, this .500-inch offset slug...UBM15-0040-E- SKU:
- UBM15-0040-E
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 15-0040-E
MSRP: $13.99Now: $13.57Was: $13.99 -
On Sale
U-B Caster Slug .375 Offset 15-0040-D
U-B MACHINE
MSRP: $13.99Now: $13.57Was: $13.99Fine-tune your vehicle's front-end geometry with precision caster adjustment. This aluminum caster slug allows you to dial in the exact caster angle your setup demands, whether you're chasing lap times or dialing in street performance. A simple, bolt-on...UBM15-0040-D- SKU:
- UBM15-0040-D
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- 15-0040-D
MSRP: $13.99Now: $13.57Was: $13.99Qty in Cart: 0Quantity:Price:MSRP: $13.99Now: $13.57Was: $13.99Subtotal: -
On Sale
U-B Caster Slug .25 Offset 15-0040-C
U-B MACHINE
MSRP: $13.99Now: $13.57Was: $13.99Caster angle directly impacts steering response, tire wear, and high-speed stability—making proper setup critical for both track performance and street handling. The U-B Caster Slug allows precise caster adjustment on slotted upper control arms, letting...UBM15-0040-C- SKU:
- UBM15-0040-C
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 15-0040-C
MSRP: $13.99Now: $13.57Was: $13.99 -
On Sale
U-B Caster Slug Zero Offset 15-0040-A
U-B MACHINE
MSRP: $13.99Now: $13.57Was: $13.99Precision caster adjustment is fundamental to dialing in your vehicle's alignment and handling characteristics, and the U-B Caster Slug Zero Offset delivers exactly what you need for slotted upper control arms. This aluminum slug allows you to fine-tune...UBM15-0040-A- SKU:
- UBM15-0040-A
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 15-0040-A
MSRP: $13.99Now: $13.57Was: $13.99 -
On Sale
U-B Caster Slugs (Set of 5) 15-0040
U-B MACHINE
MSRP: $46.99Now: $45.58Was: $46.99Caster adjustment is critical for achieving proper wheel alignment and predictable handling characteristics on the track or street. The U-B Caster Slugs allow you to dial in the exact caster angle your setup demands by providing multiple offset positions...UBM15-0040- SKU:
- UBM15-0040
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- MFG Part #:
- 15-0040
MSRP: $46.99Now: $45.58Was: $46.99 -
On Sale
U-B Ball Joint Plate only upper control arm 4 bolt 15-0001
U-B MACHINE
MSRP: $6.99Now: $6.78Was: $6.99When your upper control arm takes a beating on the track or trail, a compromised ball joint plate can introduce play in your suspension geometry—degrading handling precision and accelerating wear on adjacent components. This OEM-quality replacement plate...UBM15-0001- SKU:
- UBM15-0001
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- MFG Part #:
- 15-0001
MSRP: $6.99Now: $6.78Was: $6.99 -
On Sale
U-B Upper A-Arm 9 Metric 1-1/2in Offset 14-0909-6L
U-B MACHINE
MSRP: $120.99Now: $117.36Was: $120.99A worn or improperly dimensioned upper A-arm compromises wheel alignment, handling response, and tire wear—critical factors whether you're on the track or fine-tuning a street machine. This bolt-in replacement restores precise geometry and delivers the...UBM14-0909-6L- SKU:
- UBM14-0909-6L
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
- MFG Part #:
- 14-0909-6L
MSRP: $120.99Now: $117.36Was: $120.99 -
On Sale
U-B Offset Upper Control Arm 14-0829-6L
U-B MACHINE
MSRP: $120.99Now: $117.36Was: $120.99A quality upper control arm is fundamental to suspension geometry and handling precision—this tubular design maintains consistent alignment under load while the bolt-in ball joint simplifies installation without requiring welding or specialized...UBM14-0829-6L- SKU:
- UBM14-0829-6L
- Availability:
- Ships Same Business Day
- Weight:
- 3.23 LBS
- MFG Part #:
- 14-0829-6L
MSRP: $120.99Now: $117.36Was: $120.99 -
On Sale
U-B Offset Upper Control Arm 14-0809-5R
U-B MACHINE
MSRP: $119.99Now: $116.39Was: $119.99Precision steering geometry starts with quality control arms. The U-B Offset Upper Control Arm delivers the geometry correction and durability you need for consistent handling, whether you're dialing in a street machine or building a track-focused A-Body...UBM14-0809-5R- SKU:
- UBM14-0809-5R
- Availability:
- Ships Same Business Day
- Weight:
- 3.19 LBS
- MFG Part #:
- 14-0809-5R
MSRP: $119.99Now: $116.39Was: $119.99 -
On Sale
U-B Offset Upper Control Arm 14-0809-5L
U-B MACHINE
MSRP: $119.99Now: $116.39Was: $119.99Suspension geometry directly impacts your vehicle's handling, tire wear, and overall performance—especially in competitive or high-stress driving environments. The U-B Offset Upper Control Arm corrects alignment issues and allows for fine-tuning of...UBM14-0809-5L- SKU:
- UBM14-0809-5L
- Availability:
- Ships Same Business Day
- Weight:
- 3.19 LBS
- MFG Part #:
- 14-0809-5L
MSRP: $119.99Now: $116.39Was: $119.99 -
Bump Stop Spring 7000lb SBS7000
SWIFT SPRINGS
$92.65Bump stops are critical for controlling suspension geometry during extreme compression events—whether you're running a drag strip, road course, or off-road terrain. The SBS7000 delivers a firm 7000 lb/in spring rate that prevents bottoming-out while...SWISBS7000- SKU:
- SWISBS7000
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MFG Part #:
- SBS7000
- Spring Rate:
- 7000 lb.
$92.65Qty in Cart: 0Quantity:Price:$92.65Subtotal: -
Bump Stop Spring 5000lb SBS5000
SWIFT SPRINGS
$92.65Bump stops are critical suspension components that prevent metal-to-metal contact when your suspension reaches full compression, protecting your chassis, frame, and other drivetrain components from catastrophic damage. The SBS5000 delivers a 5000 lb/in...SWISBS5000- SKU:
- SWISBS5000
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MFG Part #:
- SBS5000
- Spring Rate:
- 5000 lb.
$92.65 -
Bump Stop Spring 4000lb SBS4000
SWIFT SPRINGS
$92.65Bump stops prevent suspension bottoming and chassis damage during extreme compression events—essential for track applications where suspension travel is maximized. This 4000lb/in spring rate provides the stiff support needed to arrest suspension movement...SWISBS4000- SKU:
- SWISBS4000
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MFG Part #:
- SBS4000
- Spring Rate:
- 4000 lb.
$92.65 -
Bump Stop Spring 3000lb SBS3000
SWIFT SPRINGS
$92.65Bump stops are critical suspension components that prevent metal-to-metal contact when your suspension reaches maximum compression, protecting expensive components from catastrophic damage. The SBS3000 delivers consistent 3000 lb/in spring rate...SWISBS3000- SKU:
- SWISBS3000
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MFG Part #:
- SBS3000
- Spring Rate:
- 3000 lb.
$92.65 -
Bump Stop Spring 2500lb SBS2500
SWIFT SPRINGS
$92.65Bump stops are essential for controlling suspension travel and preventing bottoming-out during aggressive cornering, hard braking, or track driving. This 2500lb/in spring rate provides progressive support at the end of suspension stroke, protecting your...SWISBS2500- SKU:
- SWISBS2500
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MFG Part #:
- SBS2500
- Spring Rate:
- 2500 lb.
$92.65 -
Bump Stop Spring 2000lb SBS2000
SWIFT SPRINGS
$92.65Bump stops protect your suspension from bottoming out under extreme compression, preventing costly damage to shocks, chassis, and drivetrain components. The SBS2000 delivers a stiff 2000 lb/in spring rate, making it ideal for racing applications where...SWISBS2000- SKU:
- SWISBS2000
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MFG Part #:
- SBS2000
- Spring Rate:
- 2000 lb.
$92.65 -
Bump Stop Spring 1800lb SBS1800
SWIFT SPRINGS
$92.65Bump stops are critical suspension components that prevent metal-to-metal contact when your suspension reaches full compression, protecting your chassis and components from damage during aggressive driving or rough track conditions. The 1800lb/in spring...SWISBS1800- SKU:
- SWISBS1800
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MFG Part #:
- SBS1800
- Spring Rate:
- 1800 lb.
$92.65Qty in Cart: 0Quantity:Price:$92.65Subtotal: -
Bump Stop Spring 1600lb SBS1600
SWIFT SPRINGS
$92.65Bump stops are critical suspension components that protect your chassis and components from bottoming out during aggressive driving, track use, or extreme suspension compression. The SBS1600 delivers a stiff 1600 lb/in spring rate, making it ideal for...SWISBS1600- SKU:
- SWISBS1600
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MFG Part #:
- SBS1600
- Spring Rate:
- 1600 lb.
$92.65
