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!
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- Qty in Cart
- Quantity
- Price
- Subtotal
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Lower Control Arm Kit for 1978-88 GM Metric Street Stock & Hobby Stock, Includes Ball Joints & Greasable Bushings
J J MOTORSPORTS
$371.92A solid suspension foundation is non-negotiable in street stock and hobby stock racing—and this Lower Control Arm Kit gives you exactly that. Factory control arms wear out, develop slop, and compromise your handling when you need precision most. This kit...RCSU-5013- SKU:
- RCSU-5013
- Availability:
- Ships Same Business Day
- Weight:
- 15.00 LBS
$371.92 -
Swift Springs 10" x 2.5" ID Coil-Over Barrel
SWIFT SPRINGS
$111.35A quality coil-over suspension system demands springs engineered for precision and reliability. The Swift Springs 10" x 2.5" ID Coil-Over Barrel delivers consistent spring rates and consistent performance across street, road course, and competition...234-9084- SKU:
- 234-9084
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$111.35 -
10.5" Adjustable Upper Control Arm with Notched Shaft
J J MOTORSPORTS
$170.00If you're building or maintaining a rage modified or custom dirt race chassis, control arm geometry directly impacts your handling precision and suspension responsiveness. This adjustable upper control arm gives you the fine-tuning capability to dial in...RCSU-00800- SKU:
- RCSU-00800
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches):
- 10.25" - 11.25"
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
$170.00 -
10.5" Adjustable Upper Control Arm with Aluminum Shaft
J J MOTORSPORTS
$170.00Precision front-end geometry is non-negotiable in dirt racing, and this adjustable upper control arm gives you the corner-by-corner tuning capability to dial in your chassis setup without fabrication delays. The 10.25" to 11.25" adjustment range lets you...RCSU-00788- SKU:
- RCSU-00788
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches):
- 10.25" - 11.25"
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
$170.00 -
10.5" Adjustable Upper Control Arm with Slotted Shaft
J J MOTORSPORTS
$170.00If you're building or tuning a dirt race car chassis, you need an upper control arm that gives you real adjustability without compromise. This 10.5" adjustable design lets you dial in your suspension geometry precisely, while the slotted shaft and...RCSU-00899- SKU:
- RCSU-00899
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches):
- 10.25" - 11.25"
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
$170.00 -
12.5" Adjustable Upper Control Arm with Slotted Shaft
J J MOTORSPORTS
$170.00Precise suspension geometry is non-negotiable in dirt racing, and this adjustable upper control arm gives you the fine-tuning capability to dial in your chassis for optimal weight transfer and cornering performance. The slotted aluminum cross shaft...RCSU-00877- SKU:
- RCSU-00877
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches):
- 12.25" - 13.25"
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
- Cross Shaft Material:
- Aluminum
$170.00 -
9" Adjustable Upper Control Arm with Slotted Shaft
J J MOTORSPORTS
$170.00Fine-tuning suspension geometry is critical for extracting consistent lap times and predictable handling on dirt. This 9" adjustable upper control arm gives you the precision to dial in caster, camber, and ride height without fabrication—essential for...RCSU-00855- SKU:
- RCSU-00855
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches):
- 8.75-9.75
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
$170.00 -
11" Adjustable Upper Control Arm with Slotted Shaft
J J MOTORSPORTS
$170.00Fine-tuning your suspension geometry is critical for competitive handling and tire wear management. This adjustable upper control arm delivers the precision you need to dial in caster, camber, and ride height without fabricating custom brackets. Built...RCSU-00833- SKU:
- RCSU-00833
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches):
- 10.75-11.75
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
- Cross Shaft Material:
- Aluminum
$170.00 -
9" Adjustable Upper Control Arm with Aluminum Shaft
J J MOTORSPORTS
$160.00If you're building or tuning a rage modified or dirt race chassis, getting your suspension geometry dialed in is non-negotiable—and that starts with a quality upper control arm. This 9" adjustable unit gives you the fine-tuning capability to dial in...RCSU-00240- SKU:
- RCSU-00240
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches):
- 8.75-9.75
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
$160.00 -
11" Adjustable Upper Control Arm with Aluminum Shaft
J J MOTORSPORTS
$160.00Precision chassis setup starts with a properly tuned upper control arm, and this adjustable design gives you the geometry control you need to dial in your Rage Modified or dirt racer. The aluminum cross shaft reduces unsprung weight while the 10.75" to...RCSU-00144- SKU:
- RCSU-00144
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches):
- 10.75-11.75
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
- Cross Shaft Material:
- Aluminum
$160.00 -
Aluminum Notched Cross Shaft 6" Hole to Hole Center for Adjustable Uppers
J J MOTORSPORTS
$35.00Precision adjustable upper control arms demand a cross shaft that won't compromise your suspension geometry or alignment repeatability. This aluminum notched cross shaft gives you the adjustability you need without the weight penalty, while the...RCSU-0041- SKU:
- RCSU-0041
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$35.00 -
Aluminum Cross Shaft 6" Hole to Hole Center for Adjustable Uppers
J J MOTORSPORTS
$35.00Precision adjustability starts with a solid foundation. This aluminum cross shaft gives you the fine-tuning capability to dial in your suspension geometry without compromise, whether you're chasing lap times or dialing in street performance. Built for...RCSU-0040- SKU:
- RCSU-0040
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$35.00 -
11" Adjustable Upper Control Arm
J J MOTORSPORTS
$140.00Precise suspension geometry is non-negotiable in dirt racing—even small deviations in control arm length directly impact handling, tire wear, and lap times. This 11" adjustable upper control arm gives you the fine-tuning capability to dial in your...RCSU-0010- SKU:
- RCSU-0010
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches:
- 10.75-11.75
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
$140.00 -
9" Adjustable Upper Control Arm
J J MOTORSPORTS
$140.00Upper control arm geometry directly impacts your suspension's alignment, steering response, and tire wear—especially critical in dirt racing where chassis setup separates winners from the field. This 9" adjustable arm lets you fine-tune your a-frame...RCSU-00220- SKU:
- RCSU-00220
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Adjustable Range (inches:
- 8.75-9.75
- Construction:
- Steel
- Ball Joint Pin Length:
- Select
$140.00 -
Swift Springs 16" x 2.5" ID Coil-Over Barrel
SWIFT SPRINGS
$128.35 - $136.85A quality coil-over barrel is the foundation of any serious suspension setup, directly affecting ride height, spring rates, and overall handling dynamics. Swift Springs' 16" x 2.5" ID design delivers the adjustability and performance consistency that...234-9087- SKU:
- 234-9087
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$128.35 - $136.85 -
Swift Springs 14" x 2.5" ID Coil-Over Barrel
SWIFT SPRINGS
$111.35 - $119.85A quality coil-over suspension system demands a spring that can handle consistent abuse without losing performance. Swift Springs' 14" x 2.5" ID barrel coil-over is engineered for reliability across track days, street racing, and high-performance driving...234-9086- SKU:
- 234-9086
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$111.35 - $119.85 -
Swift Springs 12" x 2.5" ID Coil-Over Barrel
SWIFT SPRINGS
$111.35 - $119.85A quality coil-over barrel is the foundation of a responsive, tunable suspension system. Swift Springs' 12" x 2.5" ID unit delivers the ride height adjustability and spring rate consistency that separates dialed-in setups from stock compromises. Whether...234-9085- SKU:
- 234-9085
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$111.35 - $119.85 -
Swift Springs 8" x 2.5" ID Coil-Over
SWIFT SPRINGS
$102.85 - $111.35Swift Springs 8" x 2.5" ID coil-overs deliver the adjustability and ride quality serious racers and performance enthusiasts demand. Whether you're fine-tuning suspension geometry on the track or dialing in daily-driver comfort, these coil-overs give you...234-9083- SKU:
- 234-9083
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$102.85 - $111.35 -
Swift Springs 7" x 2.5" ID Coil-Over Barrel
SWIFT SPRINGS
$111.35 - $119.85A quality coil-over setup demands a spring that can handle both the demands of aggressive driving and the precision tuning your suspension requires. Swift Springs' 7" x 2.5" ID coil-over barrel delivers consistent spring rates and reliable performance...234-9082- SKU:
- 234-9082
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$111.35 - $119.85 -
Swift Springs 6" x 2.5" ID Coil-Over Barrel
SWIFT SPRINGS
$102.85 - $109.65A quality coil-over suspension system demands a spring that can handle sustained compression cycles without losing its response characteristics. Swift Springs' 6" x 2.5" ID barrel coil-over is engineered for racers and performance builders who need...234-9081- SKU:
- 234-9081
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$102.85 - $109.65
