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Suspension and Components

Suspension and Components

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

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
  • Coil-Over Kit 2.5in For Black WB PROC300WB

    Pro Shock Coil-Over Kit 2.5in For Black WB C300WB

    PRO SHOCK

    $89.24
    Fine-tuning your suspension geometry requires a coil-over system that delivers repeatable adjustability without compromising ride quality or durability. The Pro Shock Coil-Over Kit gives you independent spring preload and ride height adjustment, letting...
    PROC300WB
    SKU:
    PROC300WB
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    MFG Part #:
    C300WB
    $89.24
    Qty in Cart: 0
    Quantity:
    Price:
    $89.24
    Subtotal:
  • Aluminum Coil-Over Kit  PROC300

    Pro Shock Aluminum Coil-Over Kit C300

    PRO SHOCK

    $89.24
    A quality suspension setup separates competitive lap times from also-rans, and the Pro Shock Aluminum Coil-Over Kit C300 delivers the adjustability and precision you need to dial in your vehicle's handling across varying track conditions. Built with a...
    PROC300
    SKU:
    PROC300
    Availability:
    Ships Same Business Day
    Weight:
    0.83 LBS
    MFG Part #:
    C300
    $89.24
    Qty in Cart: 0
    Quantity:
    Price:
    $89.24
    Subtotal:
  • Bearing Mount 1/2in  PROB200A

    Pro Shock Bearing Mount 1/2in B200A

    PRO SHOCK

    $36.74
    Precision shock mounting is critical for maintaining suspension geometry and damping performance under extreme track conditions. This Pro Shock Bearing Mount delivers the spherical articulation your suspension demands while eliminating bind and...
    PROB200A
    SKU:
    PROB200A
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    MFG Part #:
    B200A
    $36.74
    Qty in Cart: 0
    Quantity:
    Price:
    $36.74
    Subtotal:
  • Threaded Body Aluminum Shock PROAC950B

    Pro Shock Threaded Body Aluminum "AC" Series 9 Inch - 5C - 5R Shock AC950B

    PRO SHOCK

    $278.24
    If you're running a race setup that demands precise suspension tuning, the AC950B delivers the adjustability and durability required for consistent performance across varied track conditions. Its threaded aluminum body and twin-tube design allow you to...
    PROAC950B
    SKU:
    PROAC950B
    Availability:
    Ships Same Business Day
    Weight:
    3.90 LBS
    MFG Part #:
    AC950B
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Threaded Body Aluminum Split Valve Shock PROAC946B

    Pro Shock Threaded Body Aluminum "AC" Series 9 Inch - 4C - 6R Split Valve Shock AC946B

    PRO SHOCK

    $278.24
    The AC946B delivers precise damping control for vehicles demanding split-valve tuning at the track or trail. Its threaded aluminum body enables quick adjustments without specialized tools, while the twin-tube design balances responsiveness with...
    PROAC946B
    SKU:
    PROAC946B
    Availability:
    Ships Same Business Day
    Weight:
    4.01 LBS
    MFG Part #:
    AC946B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Threaded Body Aluminum Split Valve Shock PROAC754B

    Pro Shock Threaded Body Aluminum "AC" Series Split Valve 7 Inch - 5C - 4R Shock AC754B

    PRO SHOCK

    $278.24
    The AC754B delivers consistent damping control through a precision split-valve design, allowing you to dial in separate compression and rebound characteristics for your specific track conditions. Built from threaded aluminum with gold anodizing, this...
    PROAC754B
    SKU:
    PROAC754B
    Availability:
    Ships Same Business Day
    Weight:
    3.51 LBS
    MFG Part #:
    AC754B
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Threaded Body Aluminum Split Valve Shock PROAC746B

    Pro Shock Threaded Body Aluminum "AC" Series 7 Inch - 4C - 6R Split Valve Shock AC746B

    PRO SHOCK

    $278.24
    The Pro Shock Threaded Body Aluminum AC Series delivers the precision damping control serious racers and high-performance builds demand. Whether you're fine-tuning suspension geometry on a road course or dialing in off-road compliance, the 4-6 split...
    PROAC746B
    SKU:
    PROAC746B
    Availability:
    Ships Same Business Day
    Weight:
    3.54 LBS
    MFG Part #:
    AC746B
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Threaded Body Aluminum Shock PROAC740B

    Pro Shock Threaded Body Aluminum "AC" Series 7 Inch 4C - 4R Shock AC740B

    PRO SHOCK

    $278.24
    The AC740B delivers proven twin-tube damping performance in a lightweight aluminum package, ideal for builds where unsprung weight matters. Its threaded body design simplifies installation and adjustment, while the 4-4 valve configuration provides...
    PROAC740B
    SKU:
    PROAC740B
    Availability:
    Ships Same Business Day
    Weight:
    3.53 LBS
    MFG Part #:
    AC740B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Threaded Body Aluminum Split Valve Shock PROAC557B

    Pro Shock Threaded Body Aluminum "AC" Series 5 Inch - 5C - 5R Split Valve Shock AC557B

    PRO SHOCK

    $278.24
    The AC557B delivers precision damping control with a proven split-valve design that separates compression and rebound circuits for fine-tuned handling across varying track conditions. Built from threaded aluminum construction with gold anodizing, this...
    PROAC557B
    SKU:
    PROAC557B
    Availability:
    Ships Same Business Day
    Weight:
    2.97 LBS
    MFG Part #:
    AC557B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Threaded Body Aluminum Shock PROAC550B

    Pro Shock Threaded Body Aluminum "AC" Series 5 Inch 5C - 5R Shock AC550B

    PRO SHOCK

    $278.24
    The AC550B delivers tunable damping control with a compact 5-inch design that fits tight chassis configurations without sacrificing adjustability. The threaded aluminum body allows precision valving changes in the field, letting you dial in your...
    PROAC550B
    SKU:
    PROAC550B
    Availability:
    Ships Same Business Day
    Weight:
    2.95 LBS
    MFG Part #:
    AC550B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Aluminum Body Shock 9in Stroke PROA950B

    Pro Shock Aluminum Body "A" Series 9 Inch 5C 5R Shock A950B

    PRO SHOCK

    $278.24
    The Pro Shock A950B delivers consistent damping control with a lightweight aluminum construction designed for both street and track applications. Its twin-tube design and 5-5 valve configuration provide predictable handling characteristics without the...
    PROA950B
    SKU:
    PROA950B
    Availability:
    Ships Same Business Day
    Weight:
    3.74 LBS
    MFG Part #:
    A950B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Aluminum Body Split Valve Shock PROA946B

    Pro Shock Aluminum Body "A" Series 9 Inch 4C 6R Split Valve Shock A946B

    PRO SHOCK

    $278.24
    The Pro Shock A946B delivers precision damping control through its split-valve design, allowing independent tuning of compression and rebound for optimal handling across varied track conditions. Built with a lightweight aluminum body and gold anodized...
    PROA946B
    SKU:
    PROA946B
    Availability:
    Ships Same Business Day
    Weight:
    3.68 LBS
    MFG Part #:
    A946B
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Aluminum Body Split Valve Shock PROA945B

    Pro Shock Aluminum Body "A" Series 9 Inch 4C 5R Split Valve Shock A945B

    PRO SHOCK

    $278.24
    The A945B delivers consistent damping control across compression and rebound cycles, essential for maintaining vehicle stability through aggressive cornering and rough track surfaces. Its aluminum construction provides a lightweight alternative to...
    PROA945B
    SKU:
    PROA945B
    Availability:
    Ships Same Business Day
    Weight:
    3.83 LBS
    MFG Part #:
    A945B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Alum Body Shock  PROA939B

    Pro Shock Aluminum Body "A" Series 9 Inch Shock 3C 9R A939B

    PRO SHOCK

    $278.24
    The Pro Shock Aluminum Body "A" Series delivers consistent damping control across a wide range of track conditions, making it an essential upgrade for racers who demand predictable suspension response. Built with a lightweight aluminum construction and...
    PROA939B
    SKU:
    PROA939B
    Availability:
    Ships Same Business Day
    Weight:
    3.67 LBS
    MFG Part #:
    A939B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Aluminum Body Split Valve Shock PROA848B

    Pro Shock Aluminum Body "A" Series 8 Inch 4C 8R Split Valve Shock A848B

    PRO SHOCK

    $278.24
    The Pro Shock Aluminum Body "A" Series delivers precision damping control essential for serious racers and high-performance builds. With a split-valve design and tunable 4-8 valve configuration, you'll achieve the exact suspension response needed for...
    PROA848B
    SKU:
    PROA848B
    Availability:
    Ships Same Business Day
    Weight:
    3.48 LBS
    MFG Part #:
    A848B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Aluminum Body Split Valve Shock PROA754B

    Pro Shock Aluminum Body Split Valve Shock A754B

    PRO SHOCK

    $278.24
    The Pro Shock A754B delivers tunable damping control through its split-valve design, allowing you to dial in compression and rebound independently for precise handling across varying track conditions. Built with a smooth aluminum body and gold anodized...
    PROA754B
    SKU:
    PROA754B
    Availability:
    Ships Same Business Day
    Weight:
    3.28 LBS
    MFG Part #:
    A754B
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Aluminum Body Split Valve Shock PROA752B

    Pro Shock Aluminum Body Split Valve Shock A752B

    PRO SHOCK

    $278.24
    The Pro Shock A752B delivers precise damping control through its 5-2 split valve design, engineered to manage both compression and rebound with the responsiveness serious racers demand. Built from aluminum and finished in gold anodize, this twin-tube...
    PROA752B
    SKU:
    PROA752B
    Availability:
    Ships Same Business Day
    Weight:
    3.26 LBS
    MFG Part #:
    A752B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Aluminum Body Shock 7in Stroke PROA750B

    Pro Shock Aluminum Body "A" Series Shock 7in Stroke A750B

    PRO SHOCK

    $278.24
    The Pro Shock A750B delivers precise damping control and consistent performance across demanding track conditions. With a 7-inch stroke and twin-tube design, this aluminum-body shock handles both compression and rebound with the balanced 5-5 valve...
    PROA750B
    SKU:
    PROA750B
    Availability:
    Ships Same Business Day
    Weight:
    3.29 LBS
    MFG Part #:
    A750B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Aluminum Body Split Valve Shock PROA746B

    Pro Shock Aluminum Body Split Valve Shock A746B

    PRO SHOCK

    $278.24
    The Pro Shock A746B delivers consistent damping performance across compression and extension cycles, making it an ideal choice for racers and enthusiasts who demand predictable handling characteristics. Its aluminum body construction combined with a...
    PROA746B
    SKU:
    PROA746B
    Availability:
    Ships Same Business Day
    Weight:
    3.37 LBS
    MFG Part #:
    A746B
    $278.24
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Aluminum Body Split Valve Shock PROA745B

    Pro Shock Aluminum Body Split Valve Shock A745B

    PRO SHOCK

    $278.24
    The Pro Shock A745B delivers consistent damping control across compression and extension cycles, making it an ideal choice for racers and enthusiasts who demand predictable suspension response under demanding track conditions. Its aluminum construction...
    PROA745B
    SKU:
    PROA745B
    Availability:
    Ships Same Business Day
    Weight:
    3.40 LBS
    MFG Part #:
    A745B
    Qty in Cart: 0
    Quantity:
    Price:
    $278.24
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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