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J J Motorsports

J J Motorsports

J J Motorsports

JJ Motorsports Race Car Parts

Discover circle track racing components from JJ Motorsports. Specializing in durable, high-performance parts for IMCA, USRA, and dirt track racing, our selection includes adjustable control arms, suspension spacers, tools, clamps, and fasteners designed for strength, precision, and reliability on the track.

Shop for innovative solutions in chassis, suspension, and pit equipment. Explore related categories such as circle track suspension and components for handling upgrades or circle track tools for maintenance essentials.

Top JJ Motorsports 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
  • J J MOTORSPORTS 10.5" Adjustable Upper Control Arm with Notched Shaft J J MOTORSPORTS 10.5" Adjustable Upper Control Arm with Notched Shaft

    10.5" Adjustable Upper Control Arm with Notched Shaft

    J J MOTORSPORTS

    $170.00
    If 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
    Qty in Cart: 0
    Quantity:
    Price:
    $170.00
    Subtotal:
  • J J MOTORSPORTS 10.5" Adjustable Upper Control Arm with Aluminum Shaft J J MOTORSPORTS 10.5" Adjustable Upper Control Arm with Aluminum Shaft

    10.5" Adjustable Upper Control Arm with Aluminum Shaft

    J J MOTORSPORTS

    $170.00
    Precision 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
    Qty in Cart: 0
    Quantity:
    Price:
    $170.00
    Subtotal:
  • J J MOTORSPORTS 10.5" Adjustable Upper Control Arm with Slotted Shaft J J MOTORSPORTS 10.5" Adjustable Upper Control Arm with Slotted Shaft

    10.5" Adjustable Upper Control Arm with Slotted Shaft

    J J MOTORSPORTS

    $170.00
    If 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
    Qty in Cart: 0
    Quantity:
    Price:
    $170.00
    Subtotal:
  • J J MOTORSPORTS 12.5" Adjustable Upper Control Arm with Slotted Shaft J J MOTORSPORTS 12.5" Adjustable Upper Control Arm with Slotted Shaft

    12.5" Adjustable Upper Control Arm with Slotted Shaft

    J J MOTORSPORTS

    $170.00
    Precise 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
    Qty in Cart: 0
    Quantity:
    Price:
    $170.00
    Subtotal:
  • J J MOTORSPORTS 9" Adjustable Upper Control Arm with Slotted Shaft J J MOTORSPORTS 9" Adjustable Upper Control Arm with Slotted Shaft

    9" Adjustable Upper Control Arm with Slotted Shaft

    J J MOTORSPORTS

    $170.00
    Fine-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
    Qty in Cart: 0
    Quantity:
    Price:
    $170.00
    Subtotal:
  • J J MOTORSPORTS 11" Adjustable Upper Control Arm with Slotted Shaft J J MOTORSPORTS 11" Adjustable Upper Control Arm with Slotted Shaft

    11" Adjustable Upper Control Arm with Slotted Shaft

    J J MOTORSPORTS

    $170.00
    Fine-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
    Qty in Cart: 0
    Quantity:
    Price:
    $170.00
    Subtotal:
  • imca modified upper control arms for race cars jj motorsports adjustable upper control arm

    9" Adjustable Upper Control Arm with Aluminum Shaft

    J J MOTORSPORTS

    $160.00
    If 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
    Qty in Cart: 0
    Quantity:
    Price:
    $160.00
    Subtotal:
  • dirt modified upper control arm side view of racing modified upper control arm

    11" Adjustable Upper Control Arm with Aluminum Shaft

    J J MOTORSPORTS

    $160.00
    Precision 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
    Qty in Cart: 0
    Quantity:
    Price:
    $160.00
    Subtotal:
  • adjustable control arm shaft notched notched control arm shaft for modified

    Aluminum Notched Cross Shaft 6" Hole to Hole Center for Adjustable Uppers

    J J MOTORSPORTS

    $35.00
    Precision 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
    Qty in Cart: 0
    Quantity:
    Price:
    $35.00
    Subtotal:
  • dirt modified aluminum cross shaft for adjustable control arms dirt modified aluminum cross shaft for adjustable control arms

    Aluminum Cross Shaft 6" Hole to Hole Center for Adjustable Uppers

    J J MOTORSPORTS

    $35.00
    Precision 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
    Qty in Cart: 0
    Quantity:
    Price:
    $35.00
    Subtotal:
  • dirt modified 11 inch upper control arm dirt race car adjustable a frame

    11" Adjustable Upper Control Arm

    J J MOTORSPORTS

    $140.00
    Precise 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
    Qty in Cart: 0
    Quantity:
    Price:
    $140.00
    Subtotal:
  • dirt modified upper control arm dirt race car adjustable a-frames

    9" Adjustable Upper Control Arm

    J J MOTORSPORTS

    $140.00
    Upper 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
    Qty in Cart: 0
    Quantity:
    Price:
    $140.00
    Subtotal:
  • Dirt Late Model 6th Coil Assembly with Spring

    Dirt Late Model 6th Coil Assembly with Spring

    J J MOTORSPORTS

    $215.99
    A properly tuned 6th coil assembly is critical for maintaining consistent suspension geometry and weight transfer in dirt late model racing. This clamp-on design allows quick adjustments to spring rate without full suspension teardown, letting you dial...
    234-9001
    SKU:
    234-9001
    Availability:
    Ships Same Business Day
    Weight:
    5.00 LBS
    $215.99
    Qty in Cart: 0
    Quantity:
    Price:
    $215.99
    Subtotal:
  • On Sale
    Ships Free
    3/16 rivet gun dirt late model rivet gun

    14.4V Cordless Rivet Tool - Works with 3/32 to 3/16 Rivets, Includes Batteries and Case

    J J MOTORSPORTS

    Now: $280.00
    Was: $319.99
    Whether you're assembling race car bodywork, fabricating chassis components, or tackling demanding fastening jobs, a cordless rivet tool eliminates the friction of pneumatic setups and corded equipment. This 14.4V unit delivers the force and reliability...
    RCFS-5000
    SKU:
    RCFS-5000
    Availability:
    Ships Same Business Day
    Weight:
    8.00 LBS
    Color:
    Blue
    Rivet Size:
    Does up to 3/16" rivets
    Power Source:
    Battery
    Battery:
    Rechargeable
    Charger:
    Included
    Now: $280.00
    Was: $319.99
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $280.00
    Was: $319.99
    Subtotal:
  • racing lug socket socket for wide 5 wheels

    Long Pit Lug Socket Extension – 1/2" Drive, 12" Long

    J J MOTORSPORTS

    $54.95
    In competitive racing, pit stop efficiency separates winners from the rest. This 12-inch lug socket extension eliminates the reach limitations of standard tools, giving your crew faster access to lug nuts without awkward positioning or wasted seconds...
    RCTL-1001
    SKU:
    RCTL-1001
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    $54.95
    Qty in Cart: 0
    Quantity:
    Price:
    $54.95
    Subtotal:
  • threaded nut inserts for racing jj motorsports threaded nut insert body fasteners

    Steel Threaded Nut Inserts with Nylon Locking Nuts - 1/4"-20 Fasteners for Race Car Panels

    J J MOTORSPORTS

    $19.95 - $89.95
    Panel fastening on a race car demands reliability—vibration, thermal cycling, and repeated assembly cycles will loosen standard fasteners. These steel threaded nut inserts with nylon locking nuts provide the secure, repeatable clamping force you need for...
    RCFS-1005
    SKU:
    RCFS-1005
    Availability:
    Ships Same Business Day
    Weight:
    5.00 LBS
    Made In:
    Michigan, USA
    Type:
    Threaded Nut Inserts
    Fits:
    3/8 Hole
    Takes:
    1/4-20 bolt
    Nut Type:
    Locking Nylon
    $19.95 - $89.95
    Qty in Cart: 0
    Quantity:
    Price:
    $19.95 - $89.95
    Subtotal:
  • 5/8 Heavy Duty Suspension Tubes - Steel 5/8 Heavy Duty Suspension Tubes - Steel

    5/8 Heavy Duty Suspension Tubes - Steel

    J J MOTORSPORTS

    $22.95 - $29.95
    Suspension geometry directly impacts your car's handling, tire wear, and overall competitiveness on the track. These 5/8" heavy-duty steel tubes give you the adjustability and strength needed to dial in your setup precisely, without compromising...
    RCSU-0051
    SKU:
    RCSU-0051
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    Made In:
    Michigan, USA
    Threads:
    5/8-18 Left Hand & Right Hand
    Finish:
    Anodized Black
    Lengths:
    Specify your length (in inches)
    $22.95 - $29.95
    Qty in Cart: 0
    Quantity:
    Price:
    $22.95 - $29.95
    Subtotal:
  • fuel filter housing racing fuel filter inline -8

    -8 AN Fuel Filter Housing with 10-Micron 8-Inch Paper Filter

    J J MOTORSPORTS

    $51.95
    Contaminated fuel is one of the fastest ways to compromise engine reliability and performance. This -8 AN fuel filter housing eliminates particulates and debris before they reach your fuel injectors or carburetor, protecting your investment and...
    RCFL-0002
    SKU:
    RCFL-0002
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    AN ends:
    AN - 8
    Paper Fuel Filter:
    Included
    Material:
    Aluminum
    Made In:
    Michigan, USA
    $51.95
    Qty in Cart: 0
    Quantity:
    Price:
    $51.95
    Subtotal:
  • threaded nut inserts for race car bodies

    Steel Threaded Nut Inserts for Race Car Body Panels - 1/4"-20 Fasteners for Dash, Access, and Body Panels

    J J MOTORSPORTS

    $17.95 - $142.95
    Race car assembly demands fastening solutions that can withstand high vibration and repeated panel removal without compromising structural integrity. These steel threaded nut inserts eliminate the need for welded studs or permanent fastening methods,...
    RCFS-1019
    SKU:
    RCFS-1019
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    $17.95 - $142.95
    Qty in Cart: 0
    Quantity:
    Price:
    $17.95 - $142.95
    Subtotal:
  • 3/4 inch pull bar tube 3/4-16 threaded suspension tubes

    3/4 Heavy Duty Suspension Tubes - Steel

    J J MOTORSPORTS

    $24.00 - $35.00
    Precision suspension geometry demands components you can trust to maintain exact specifications lap after lap. These 3/4" heavy-duty steel suspension tubes deliver the rigidity and thread accuracy required for pull bars and adjustable suspension linkages...
    RCSU-0052
    SKU:
    RCSU-0052
    Availability:
    Ships Same Business Day
    Weight:
    2.00 LBS
    Made In:
    Michigan, USA
    Threads:
    3/4-16 Left Hand & Right Hand
    Finish:
    Anodized Black
    Lengths:
    Specify your length (in inches)
    $24.00 - $35.00
    Qty in Cart: 0
    Quantity:
    Price:
    $24.00 - $35.00
    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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