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 Tube 1 x 18 x 5/8 thread 42-1802-C
U-B MACHINE
MSRP: $35.99Now: $34.91Was: $35.99Suspension geometry demands precision, and this U-B tube delivers the structural integrity your build requires. Whether you're fine-tuning a race suspension or reinforcing a custom chassis, this steel tube offers the rigidity and adjustability needed for...UBM42-1802-C-PC- SKU:
- UBM42-1802-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MFG Part #:
- 42-1802-C
MSRP: $35.99Now: $34.91Was: $35.99 -
On Sale
U-B Tube .75 x 17 x 1/2 thread 42-1705-E
U-B MACHINE
MSRP: $30.99Now: $30.06Was: $30.99A quality suspension tube is critical to maintaining proper geometry and durability under racing loads. This U-B tube's precision dimensions and robust steel construction with black powder coat finish ensure reliable performance in demanding suspension...UBM42-1705-E-PC- SKU:
- UBM42-1705-E-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MFG Part #:
- 42-1705-E
MSRP: $30.99Now: $30.06Was: $30.99 -
On Sale
U-B Tube .875 x 17 x 5/8 thread 42-1703-C
U-B MACHINE
MSRP: $35.99Now: $34.91Was: $35.99A properly engineered suspension tube is foundational to any high-performance suspension setup, and this U-B tube delivers the precision fitment and durability your build demands. Whether you're fabricating a custom suspension geometry or replacing a...UBM42-1703-C-PC- SKU:
- UBM42-1703-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- MFG Part #:
- 42-1703-C
MSRP: $35.99Now: $34.91Was: $35.99 -
U-B Tube 1 x 17 x 5/8 thread 42-1702-C
U-B MACHINE
$34.99Suspension geometry demands precision, and this U-B tube delivers the structural integrity your setup requires. Whether you're fine-tuning a race car's handling or fabricating a custom suspension geometry solution, this steel tube provides the rigidity...UBM42-1702-C-PC- SKU:
- UBM42-1702-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MFG Part #:
- 42-1702-C
$34.99Qty in Cart: 0Quantity:Price:$34.99Subtotal: -
On Sale
U-B Tube 1 x 17 x 3/4 thread 42-1702-A
U-B MACHINE
MSRP: $34.99Now: $33.94Was: $34.99Precision suspension geometry demands quality components that won't fail under track stress. This U-B tube delivers the structural integrity and consistent fitment your suspension setup needs, whether you're fine-tuning a race car or building a custom...UBM42-1702-A-PC- SKU:
- UBM42-1702-A-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.33 LBS
- MFG Part #:
- 42-1702-A
MSRP: $34.99Now: $33.94Was: $34.99Qty in Cart: 0Quantity:Price:MSRP: $34.99Now: $33.94Was: $34.99Subtotal: -
On Sale
U-B Tube 1.25 x 17 x 3/4 thread 42-1701-A
U-B MACHINE
MSRP: $44.99Now: $43.64Was: $44.99A properly engineered U-tube is fundamental to suspension geometry and handling precision—this 1.25-inch steel tube delivers the structural integrity needed for consistent performance whether you're building a custom suspension or replacing a worn...UBM42-1701-A-PC- SKU:
- UBM42-1701-A-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MFG Part #:
- 42-1701-A
MSRP: $44.99Now: $43.64Was: $44.99 -
On Sale
U-B Tube .75 x 16 x 1/2 thread 42-1605-E
U-B MACHINE
MSRP: $30.99Now: $30.06Was: $30.99When you're building or rebuilding a suspension system, you need components engineered for precision and durability—not compromise. This U-B tube delivers the structural integrity required for consistent performance whether you're fine-tuning a track car...UBM42-1605-E-PC- SKU:
- UBM42-1605-E-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- MFG Part #:
- 42-1605-E
MSRP: $30.99Now: $30.06Was: $30.99 -
On Sale
U-B Tube .875 x 16 x 5/8 thread 42-1603-C
U-B MACHINE
MSRP: $34.99Now: $33.94Was: $34.99Precision suspension geometry demands components built to exacting standards, and this U-B tube delivers the structural integrity your setup requires. Whether you're fine-tuning a race car's control arm geometry or fabricating a custom suspension...UBM42-1603-C-PC- SKU:
- UBM42-1603-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.09 LBS
- MFG Part #:
- 42-1603-C
MSRP: $34.99Now: $33.94Was: $34.99 -
On Sale
U-B Tube 1 x 16 x 5/8 thread 42-1602-C
U-B MACHINE
MSRP: $33.99Now: $32.97Was: $33.99Precision suspension geometry depends on quality tube components that won't flex, corrode, or fail under load. This U-B tube delivers the rigid, reliable foundation your suspension setup demands, whether you're dialing in a track car or rebuilding a...UBM42-1602-C-PC- SKU:
- UBM42-1602-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.24 LBS
- MFG Part #:
- 42-1602-C
MSRP: $33.99Now: $32.97Was: $33.99 -
On Sale
U-B Tube 1 x 16 x 3/4 thread 42-1602-A
U-B MACHINE
MSRP: $33.99Now: $32.97Was: $33.99A properly engineered suspension tube is critical for maintaining alignment, geometry, and structural integrity in your suspension system. This U-B tube delivers the precision fit and durability required for both street and track applications, with...UBM42-1602-A-PC- SKU:
- UBM42-1602-A-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.23 LBS
- MFG Part #:
- 42-1602-A
MSRP: $33.99Now: $32.97Was: $33.99 -
On Sale
U-B Tube 1.25 x 16 x 3/4 thread 42-1601-A
U-B MACHINE
MSRP: $43.99Now: $42.67Was: $43.99A quality suspension tube is fundamental to building a rigid, predictable chassis that translates your inputs into consistent handling performance. This U-B tube delivers the strength and precision fitment you need for custom suspension geometry without...UBM42-1601-A-PC- SKU:
- UBM42-1601-A-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- MFG Part #:
- 42-1601-A
MSRP: $43.99Now: $42.67Was: $43.99 -
On Sale
U-B Tube .750 x 15 x 1/2 thread 42-1505-E
U-B MACHINE
MSRP: $29.99Now: $29.09Was: $29.99A quality suspension tube is the backbone of any well-engineered suspension geometry, and this U-B tube delivers the precision fitment and durability your build demands. Whether you're fine-tuning your suspension setup or rebuilding from the ground up,...UBM42-1505-E-PC- SKU:
- UBM42-1505-E-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MFG Part #:
- 42-1505-E
MSRP: $29.99Now: $29.09Was: $29.99 -
On Sale
U-B Tube .875 x 15 x 5/8 thread 42-1503-C
U-B MACHINE
MSRP: $34.99Now: $33.94Was: $34.99A properly engineered suspension tube is fundamental to chassis rigidity and consistent handling characteristics. This U-B tube delivers the strength and precision fitment your suspension geometry demands, whether you're fine-tuning a street machine or...UBM42-1503-C-PC- SKU:
- UBM42-1503-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.17 LBS
- MFG Part #:
- 42-1503-C
MSRP: $34.99Now: $33.94Was: $34.99 -
On Sale
U-B Tube 1 x 15 x 3/4 thread 42-1502-A
U-B MACHINE
MSRP: $32.99Now: $32.00Was: $32.99Whether you're building a custom suspension geometry or replacing a worn component, this U-B tube delivers the structural integrity and precision fitment that separates quality builds from budget shortcuts. The 3/4-16 female threads accept standard rod...UBM42-1502-A-PC- SKU:
- UBM42-1502-A-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- MFG Part #:
- 42-1502-A
MSRP: $32.99Now: $32.00Was: $32.99Qty in Cart: 0Quantity:Price:MSRP: $32.99Now: $32.00Was: $32.99Subtotal: -
On Sale
U-B Tube .750 x 14 x 1/2 thread 42-1405-E
U-B MACHINE
MSRP: $27.99Now: $27.15Was: $27.99A properly engineered suspension tube is critical for maintaining rigid control geometry and consistent handling characteristics under racing loads. This U-B tube delivers the structural integrity your suspension demands, with precision threading for...UBM42-1405-E-PC- SKU:
- UBM42-1405-E-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.57 LBS
- MFG Part #:
- 42-1405-E
MSRP: $27.99Now: $27.15Was: $27.99 -
On Sale
U-B Tube .875 x 14 x 5/8 thread 42-1403-C
U-B MACHINE
MSRP: $32.99Now: $32.00Was: $32.99A precision-engineered suspension tube built for racing applications where durability and exact fitment are non-negotiable. This U-B tube features robust steel construction with a protective black powder coat finish, designed to handle the demands of...UBM42-1403-C-PC- SKU:
- UBM42-1403-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- MFG Part #:
- 42-1403-C
MSRP: $32.99Now: $32.00Was: $32.99 -
On Sale
U-B Tube 1 x 14 x 5/8 thread 42-1402-C
U-B MACHINE
MSRP: $33.99Now: $32.97Was: $33.99Suspension geometry demands precision components that won't fail under load or repeated stress cycles. This U-B tube delivers the structural integrity and threading consistency required for custom suspension builds, whether you're dialing in a track car...UBM42-1402-C-PC- SKU:
- UBM42-1402-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.09 LBS
- MFG Part #:
- 42-1402-C
MSRP: $33.99Now: $32.97Was: $33.99 -
On Sale
U-B Tube 1 x 14 x 3/4 thread 42-1402-A
U-B MACHINE
MSRP: $33.99Now: $32.97Was: $33.99A properly engineered suspension tube is critical for maintaining precise suspension geometry and alignment under load. This U-B tube delivers the structural integrity needed for consistent performance, whether you're fine-tuning a street machine or...UBM42-1402-A-PC- SKU:
- UBM42-1402-A-PC
- Availability:
- Ships Same Business Day
- Weight:
- 1.09 LBS
- MFG Part #:
- 42-1402-A
MSRP: $33.99Now: $32.97Was: $33.99 -
On Sale
U-B Tube .75 X 13 X 1/2 thread 42-1305-E
U-B MACHINE
MSRP: $26.99Now: $26.18Was: $26.99A properly engineered suspension tube is critical for maintaining chassis rigidity and suspension geometry under load. This U-B tube delivers the durability and precision fit your suspension setup demands, whether you're building a custom race car or...UBM42-1305-E-PC- SKU:
- UBM42-1305-E-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- MFG Part #:
- 42-1305-E
MSRP: $26.99Now: $26.18Was: $26.99 -
On Sale
U-B Tube .875 x 13 x 5/8 thread 42-1303-C
U-B MACHINE
MSRP: $30.99Now: $30.06Was: $30.99Suspension geometry demands precision, and this U-B tube delivers the structural integrity your suspension setup requires. Whether you're fine-tuning geometry on a dedicated race platform or restoring a classic build, this steel tube offers the...UBM42-1303-C-PC- SKU:
- UBM42-1303-C-PC
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- MFG Part #:
- 42-1303-C
MSRP: $30.99Now: $30.06Was: $30.99
