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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- Price
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On Sale
U-B Tube 1 x 7.5 x 3/4 thread 42-0722-A
U-B MACHINE
MSRP: $27.99Now: $27.15Was: $27.99Suspension geometry demands precision, and this U-B tube delivers the structural integrity your setup requires. Whether you're fine-tuning a custom build or replacing a worn component, this steel tube's 3/4-16 female threads accept standard rod ends and...UBM42-0722-A-PC- SKU:
- UBM42-0722-A-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.57 LBS
- MFG Part #:
- 42-0722-A
MSRP: $27.99Now: $27.15Was: $27.99Qty in Cart: 0Quantity:Price:MSRP: $27.99Now: $27.15Was: $27.99Subtotal: -
On Sale
U-B Tube .75 x 7 x 1/2 thread 42-0705-E
U-B MACHINE
MSRP: $21.99Now: $21.33Was: $21.99Whether you're building a custom suspension geometry or replacing a worn control arm on your race car, a quality U-B tube is fundamental to maintaining precise chassis alignment and load distribution. This steel tube is engineered to withstand the rigors...UBM42-0705-E-PC- SKU:
- UBM42-0705-E-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.27 LBS
- MFG Part #:
- 42-0705-E
MSRP: $21.99Now: $21.33Was: $21.99Qty in Cart: 0Quantity:Price:MSRP: $21.99Now: $21.33Was: $21.99Subtotal: -
On Sale
U-B Tube .75x6x1/2 Thread 42-0605-E
U-B MACHINE
MSRP: $21.99Now: $21.33Was: $21.99Precision suspension geometry demands components that won't compromise under load or repeated cycles. This U-B tube delivers the structural integrity and threading accuracy your suspension setup requires, whether you're building a custom control arm...UBM42-0605-E-PC- SKU:
- UBM42-0605-E-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- MFG Part #:
- 42-0605-E
MSRP: $21.99Now: $21.33Was: $21.99 -
On Sale
U-B Tube .875 x 5 x 5/8 thread 42-0503-C
U-B MACHINE
MSRP: $17.99Now: $17.45Was: $17.99Precision suspension geometry demands components built to exact specifications, and this U-B tube delivers the structural integrity and repeatability your setup requires. Whether you're fine-tuning a race car's geometry or fabricating a custom suspension...UBM42-0503-C-PC- SKU:
- UBM42-0503-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- MFG Part #:
- 42-0503-C
MSRP: $17.99Now: $17.45Was: $17.99 -
On Sale
U-B Tube .875 x 4.5 x 5/8 thread 42-0423-C
U-B MACHINE
MSRP: $17.99Now: $17.45Was: $17.99A properly engineered U-tube is critical for maintaining suspension geometry and lateral stiffness in high-performance applications. This steel construction delivers reliable support for control arm assemblies, sway bars, and other suspension linkages...UBM42-0423-C-PC- SKU:
- UBM42-0423-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- MFG Part #:
- 42-0423-C
MSRP: $17.99Now: $17.45Was: $17.99Qty in Cart: 0Quantity:Price:MSRP: $17.99Now: $17.45Was: $17.99Subtotal: -
On Sale
U-B Tube .875 x 4 x 5/8 thread 42-0403-C
U-B MACHINE
MSRP: $16.99Now: $16.48Was: $16.99Precision suspension geometry depends on quality components that won't deflect under load or fail prematurely. This U-B tube delivers the structural integrity and repeatability you need for consistent handling and accurate setup changes across multiple...UBM42-0403-C-PC- SKU:
- UBM42-0403-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- MFG Part #:
- 42-0403-C
MSRP: $16.99Now: $16.48Was: $16.99 -
On Sale
U-B Tube .875 x 3.5 x 5/8 thread 42-0323-C
U-B MACHINE
MSRP: $22.99Now: $22.30Was: $22.99Whether you're tuning suspension geometry or fabricating a custom control arm setup, this U-B tube delivers the rigid, predictable performance you need in a bolt-together package. The 5/8-18 female threads accept standard rod ends and spherical bearings,...UBM42-0323-C-PC- SKU:
- UBM42-0323-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MFG Part #:
- 42-0323-C
MSRP: $22.99Now: $22.30Was: $22.99 -
On Sale
U-B Ball Joint Sleeve 40-3307
U-B MACHINE
MSRP: $19.99Now: $19.39Was: $19.99Worn ball joint sleeves compromise suspension geometry and steering response—replacing yours with the U-B 40-3307 restores tight handling and eliminates play at the connection point. This press-in steel sleeve is engineered for direct fitment where OEM...UBM40-3307- SKU:
- UBM40-3307
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- MFG Part #:
- 40-3307
MSRP: $19.99Now: $19.39Was: $19.99 -
On Sale
U-B Ball Joint Sleeve 40-3303
U-B MACHINE
MSRP: $19.99Now: $19.39Was: $19.99A worn or damaged ball joint sleeve compromises suspension geometry and handling precision—exactly what you can't afford on track or in demanding street applications. The U-B Ball Joint Sleeve 40-3303 delivers the durability and straightforward...UBM40-3303- SKU:
- UBM40-3303
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- MFG Part #:
- 40-3303
MSRP: $19.99Now: $19.39Was: $19.99 -
On Sale
U-B Ball Joint Sleeve 40-3301
U-B MACHINE
MSRP: $22.99Now: $22.30Was: $22.99A quality ball joint sleeve is critical for maintaining precise suspension geometry and eliminating unwanted play in your front-end assembly. The U-B 40-3301 is engineered as a weld-on solution, offering a permanent, load-rated connection that won't...UBM40-3301- SKU:
- UBM40-3301
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- MFG Part #:
- 40-3301
MSRP: $22.99Now: $22.30Was: $22.99 -
On Sale
U-B Ball Joint Sleeve Tall 40-3300-137
U-B MACHINE
MSRP: $13.49Now: $13.09Was: $13.49Ball joint wear is one of the most common suspension failures that compromise steering precision and vehicle safety. The U-B Ball Joint Sleeve Tall 40-3300-137 is a direct-replacement screw-in design that restores proper articulation and eliminates play...UBM40-3300-137- SKU:
- UBM40-3300-137
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- MFG Part #:
- 40-3300-137
MSRP: $13.49Now: $13.09Was: $13.49Qty in Cart: 0Quantity:Price:MSRP: $13.49Now: $13.09Was: $13.49Subtotal: -
On Sale
U-B Ball Joint Sleeve 40-3300
U-B MACHINE
MSRP: $18.99Now: $18.42Was: $18.99A worn or damaged ball joint sleeve compromises suspension geometry and introduces dangerous play in your steering and suspension linkage. The U-B Ball Joint Sleeve 40-3300 is a direct replacement that restores precise articulation and eliminates slop,...UBM40-3300- SKU:
- UBM40-3300
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- MFG Part #:
- 40-3300
MSRP: $18.99Now: $18.42Was: $18.99 -
On Sale
U-B Thread Insert 3/4-10 40-2123
U-B MACHINE
MSRP: $14.99Now: $14.54Was: $14.99Sway bar adjusters take a beating during aggressive cornering and track work—worn threads mean lost adjustability and inconsistent handling. This U-B Thread Insert gives you a reliable, precision-fit replacement that restores full adjustment range...UBM40-2123- SKU:
- UBM40-2123
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 40-2123
MSRP: $14.99Now: $14.54Was: $14.99 -
On Sale
U-B 1.625 Eye End For Adj Sway Bar 40-2122-162
U-B MACHINE
MSRP: $29.99Now: $29.09Was: $29.99If you're running an adjustable sway bar setup, the quality of your end links directly impacts your suspension's responsiveness and durability under cornering loads. This U-B eye end is engineered for precise fitment and easy adjustment, letting you dial...UBM40-2122-162- SKU:
- UBM40-2122-162
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- MFG Part #:
- 40-2122-162
MSRP: $29.99Now: $29.09Was: $29.99 -
On Sale
U-B Eye End For Adj Sway Bar 40-2122
U-B MACHINE
MSRP: $27.99Now: $27.15Was: $27.99Sway bar adjustability is critical for dialing in your suspension geometry, and a quality eye end directly impacts your ability to fine-tune anti-roll characteristics on the track or street. The U-B Eye End delivers the precision fitment and durability...UBM40-2122- SKU:
- UBM40-2122
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MFG Part #:
- 40-2122
MSRP: $27.99Now: $27.15Was: $27.99 -
On Sale
U-B Sway Bar Adj Rod 3/4-10 x 11 40-2121
U-B MACHINE
MSRP: $25.99Now: $25.21Was: $25.99Fine-tuning your sway bar stiffness is critical for dialing in your suspension geometry and lap times—this adjustable rod gives you precise control without breaking down the entire assembly. The 11-inch length and 3/4-10 thread pitch fit UB Machine's...UBM40-2121- SKU:
- UBM40-2121
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- MFG Part #:
- 40-2121
MSRP: $25.99Now: $25.21Was: $25.99 -
On Sale
U-B Easy Access Sway Bar 40-2120
U-B MACHINE
MSRP: $77.99Now: $75.65Was: $77.99Sway bar maintenance is critical to maintaining precise handling and suspension responsiveness, especially in high-performance applications where geometry tolerances are non-negotiable. The U-B Easy Access Sway Bar 40-2120 delivers OEM-quality fastening...UBM40-2120- SKU:
- UBM40-2120
- Availability:
- Ships Same Business Day
- Weight:
- 1.84 LBS
- MFG Part #:
- 40-2120
MSRP: $77.99Now: $75.65Was: $77.99 -
On Sale
U-B Sway Bar Bolt 12 Alum 40-2111
U-B MACHINE
MSRP: $33.99Now: $32.97Was: $33.99A properly functioning sway bar is critical for chassis control and cornering stability—worn or damaged bolts compromise your suspension geometry and handling precision. This aluminum sway bar bolt delivers the strength and lightweight construction...UBM40-2111- SKU:
- UBM40-2111
- Availability:
- Ships Same Business Day
- Weight:
- 0.64 LBS
- MFG Part #:
- 40-2111
MSRP: $33.99Now: $32.97Was: $33.99 -
On Sale
U-B Sway Bar Bolt 11.5 in Steel 40-2109
U-B MACHINE
MSRP: $25.99Now: $25.21Was: $25.99A quality sway bar bolt is essential for maintaining consistent suspension geometry and preventing unwanted lateral movement during cornering. This 11.5-inch steel bolt delivers the durability and precision fit required for reliable performance on the...UBM40-2109- SKU:
- UBM40-2109
- Availability:
- Ships Same Business Day
- Weight:
- 1.68 LBS
- MFG Part #:
- 40-2109
MSRP: $25.99Now: $25.21Was: $25.99 -
On Sale
U-B C/O Mount Narrow For Round Tube 35-3325
U-B MACHINE
MSRP: $12.99Now: $12.60Was: $12.99A quality coil-over mount is the foundation of any properly tuned suspension setup. This U-B C/O mount delivers the structural rigidity needed to handle the demands of track-focused or competition applications, while its narrow profile accommodates tight...UBM35-3325- SKU:
- UBM35-3325
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- MFG Part #:
- 35-3325
MSRP: $12.99Now: $12.60Was: $12.99
