Differentials and Rear-End Components
Circle Track Differentials & Rear End Components at JJ Motorsports
Differentials and rear-end components are essential for transferring power to the wheels while ensuring balance and control during cornering in circle track racing. Engineered for maximum durability, these parts are tailored for late models and modifieds, delivering reliable performance under extreme conditions. Pair them with advanced drivetrain enhancements for a smooth, powerful drive that keeps your vehicle competitive on the track.
Shop trusted brands like Allstar Performance for versatile components, PEM for stamped housings, and Winters for quick-change options. Explore related categories such as Circle Track Front/Rear End Assemblies for complete kits or Circle Track Axle Shafts for durable upgrades.
Top Circle Track Differentials & Rear End Components
- Dirt Street Stock/Hobby Stock Floater Rear End 2.5" GN Kit – Kit includes Floater Metric Housing 60" 2.5" Grand National, (2) Wilwood Brake Rotors .810 x 11.75, (2) 31-Spline Solid Axles, (2) 5x5 Rear Hub Kits Steel with 5/8-11 Studs, (2) Wheel Hub Bearing Kits with Seals, Lug Nuts, Rotor Bolts.
- Allstar Performance Remote Fill Tank ALL36110 – Remote Fill Tank, Flush Mount, 10 AN Outlet, Aluminum, Each.
- PEM New Stamped Floater Metric Housing 60in Cent HNMK3003005 – Rear Axle Housing, Ford 9 in Floater, 60 in Wide, Centered, 3 in Tubes, 5 x 5 in Hub, 0.810 in Thick Rotors, Steel, Natural, Each.
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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Allstar Performance Axle 31 Spl 32.5 Solid ALL66326
ALLSTAR PERFORMANCE
$149.99A solid axle shaft is fundamental to any rear-end assembly, and this Allstar Performance unit delivers the strength and reliability that racers and build enthusiasts demand. Built from quality steel with a 31-spline carrier interface, it's engineered for...ALL66326- SKU:
- ALL66326
- Availability:
- Ships Same Business Day
- Weight:
- 10.89 LBS
- MFG Part #:
- ALL66326
$149.99 -
Allstar Performance Axle 31 Spl 32.0 Solid ALL66321
ALLSTAR PERFORMANCE
$149.99A solid axle is fundamental to any rear-end build, and choosing the right shaft ensures reliability under load and consistent power delivery to the wheels. Allstar Performance's 31-spline solid axles deliver the strength and precision expected in circle...ALL66321- SKU:
- ALL66321
- Availability:
- Ships Same Business Day
- Weight:
- 10.68 LBS
- MFG Part #:
- ALL66321
$149.99 -
Allstar Performance Tube Clamp 1-1/2in I.D. x 2in Wide ALL14483
ALLSTAR PERFORMANCE
$13.99When it comes to securing your roll cage or chassis tubing with confidence, the Allstar Performance ALL14483 Tube Clamp delivers rock-solid holding power you can count on. Built from durable steel with a clean natural finish, this 2-bolt clamp is a go-to...ALL14483- SKU:
- ALL14483
- Availability:
- Ships Same Business Day
- Weight:
- 1.02 LBS
- MFG Part #:
- ALL14483
$13.99 -
Ford 9 Inch Third Member Assembly, Full Spool, 31-Spline
J J MOTORSPORTS
$1,025.95If you're building a dedicated drag, circle track, or street strip machine, a full-spool third member delivers the straight-line performance your setup demands. The Ford 9-inch with a locked spool eliminates wheel hop and power loss by ensuring both rear...234-9091- SKU:
- 234-9091
- Availability:
- 1-2 Week Lead Time for Build
- Weight:
- 50.00 LBS
$1,025.95 -
Mini Spool - GM 8.5 10- Bolt 30-Spline YP MINSGM8.5-30
YUKON GEAR AND AXLE
$209.89A mini spool transforms your GM 10-bolt into a true performance differential by locking both wheels together for maximum traction off the line and through corners. This steel construction delivers the durability you need for sustained track sessions or...YKNYPMINSGM8.5-30- SKU:
- YKNYPMINSGM8.5-30
- Availability:
- Ships Same Business Day
- Weight:
- 5.69 LBS
$209.89Qty in Cart: 0Quantity:Price:$209.89Subtotal: -
Crush Sleeve Eliminator Kit Ford 9in 35-spl Pin SK CSF9-BIGPIN
YUKON GEAR AND AXLE
$147.89Crush sleeve failures are a common failure point in high-performance Ford 9-inch differentials, leading to catastrophic pinion bearing collapse and drivetrain damage. This eliminator kit removes that weak point entirely, replacing the crush sleeve design...YKNSKCSF9-BIGPIN- SKU:
- YKNSKCSF9-BIGPIN
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
$147.89 -
Winters Axle Tube 24in 2.5in GN Heavy Wall Steel 5052R/9151-150
WINTERS
$365.99Whether you're building a custom axle assembly from the ground up or replacing a worn housing tube, this Winters tube delivers the structural integrity and precision fitment that serious builds demand. The heavy-wall steel construction resists deflection...WIN5052R-24HW- SKU:
- WIN5052R-24HW
- Availability:
- Ships Same Business Day
- Weight:
- 29.79 LBS
$365.99 -
Winters axle tube 22in 2.5in GN .156 wall thickness 5052R-22 w/8265-156
WINTERS
$265.99When you're building or rebuilding a high-performance axle assembly, the tube is your foundation—it has to handle lateral loads, torque, and the punishment of hard cornering without flex or failure. The Winters 5052R-22 delivers the structural integrity...WIN5052R-22-156- SKU:
- WIN5052R-22-156
- Availability:
- Ships Same Business Day
- Weight:
- 10.96 LBS
$265.99 -
Winters aluminum axle tube 1-ton Wide 5 30.188in OAL 3in OD straight black anodized 12313L-30.188
WINTERS
$302.99A straight axle tube is fundamental to maintaining precise wheel alignment and consistent suspension geometry under load. Winters' aluminum construction delivers weight savings without sacrificing structural integrity, while the black anodized finish...WIN12313L-30.188- SKU:
- WIN12313L-30.188
- Availability:
- Ships Same Business Day
- Weight:
- 7.62 LBS
$302.99 -
Winters Axle Tube Wide 5 1 Ton 25.625in OAL 12313-25.625
WINTERS
$328.99If you're running a 1-ton Wide 5 setup, your axle tube needs to handle serious loads without compromise. The Winters Axle Tube delivers the structural integrity and precision fitment required for heavy-duty racing and off-road applications. This...WIN12313-25.625- SKU:
- WIN12313-25.625
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
$328.99 -
Spindle Snout 2in GN 5x5 Bolt-On 2 Deg 2857BB
TIGER QUICK CHANGE
$178.99A properly engineered spindle snout is critical for maintaining consistent camber angles under load, especially in competitive racing where suspension geometry directly impacts lap times and tire wear. This bolt-on rear axle snout delivers a fixed...TIG2857BB- SKU:
- TIG2857BB
- Availability:
- Ships Same Business Day
- Weight:
- 3.60 LBS
$178.99 -
Strange Oval Axle 31-Spline 35.50in 1.200in OD AGY12003550
STRANGE OVAL
$320.99A quality axle shaft is the backbone of any reliable rear-end setup, and the Strange Oval Axle delivers the strength and precision your high-performance build demands. Whether you're running a dedicated drag racer, road course machine, or street-strip...SOTAGY12003550- SKU:
- SOTAGY12003550
- Availability:
- Ships Same Business Day
- Weight:
- 21.00 LBS
$320.99 -
Strange Oval Axle 31 Spline 36.00in 1.130in OD AGY11303600
STRANGE OVAL
$320.99Whether you're building a dedicated drag setup or upgrading a high-performance street machine, a quality axle shaft is non-negotiable for reliable power transfer. The Strange Oval Axle delivers the strength and precision required to handle serious boost...SOTAGY11303600- SKU:
- SOTAGY11303600
- Availability:
- Ships Same Business Day
- Weight:
- 8.70 LBS
$320.99Qty in Cart: 0Quantity:Price:$320.99Subtotal: -
Strange Oval Axle 31 Spline 35.50in 1.130in OD AGY11303550
STRANGE OVAL
$320.99If you're running a high-horsepower build or upgrading your rear axle assembly, a precision-engineered axle shaft is critical to transferring power reliably without flex or failure under load. The Strange Oval Axle delivers the durability and strength...SOTAGY11303550- SKU:
- SOTAGY11303550
- Availability:
- Ships Same Business Day
- Weight:
- 8.50 LBS
$320.99 -
Strange Oval Axle 31-Spline 27.50in 1.080in OD AGY10802750
STRANGE OVAL
$320.99A properly engineered axle shaft is fundamental to consistent power delivery and reliability under load, whether you're running circle track, drag racing, or high-performance street applications. The Strange Oval Axle 31-Spline delivers the durability...SOTAGY10802750- SKU:
- SOTAGY10802750
- Availability:
- Ships Same Business Day
- Weight:
- 6.00 LBS
$320.99 -
Strange Oval Axle 31 Spline 32.50in 1.115in OD Solid AGU11153250
STRANGE OVAL
$260.99The Strange Oval Axle 31 Spline delivers the durability and precision needed for high-stress racing applications where half-shafts are critical to power transfer and chassis reliability. Built to Strange's exacting standards, this gun-drilled solid axle...SOTAGU11153250- SKU:
- SOTAGU11153250
- Availability:
- Ships Same Business Day
- Weight:
- 10.01 LBS
$260.99 -
Strange Oval Axle 31-Spline 28.50in .940 OD Solid AGU09402850
STRANGE OVAL
$260.99If you're building or maintaining a high-performance rear axle assembly, shaft integrity is non-negotiable. Strange Engineering's oval axle delivers the strength and precision needed for sustained racing loads, with a 31-spline carrier interface that...SOTAGU09402850- SKU:
- SOTAGU09402850
- Availability:
- Ships Same Business Day
- Weight:
- 9.00 LBS
$260.99 -
Differential Full Spool Ford 9in 31 Spline 81-0931-1
RICHMOND
$224.99A full spool eliminates wheel slip between your rear axles, delivering maximum traction and acceleration off the line—critical for drag racing, circle track, or any high-performance application where consistency matters. This Ford 9-inch spool is built...RIC81-0931-1- SKU:
- RIC81-0931-1
- Availability:
- Ships Same Business Day
- Weight:
- 8.70 LBS
$224.99 -
Differential Mini Spool GM 7.6in 28 Spline 78-7628-1
RICHMOND
$106.99A mini spool transforms your differential into a locked unit, delivering equal power to both wheels for maximum traction during hard acceleration and cornering. This steel construction is engineered to handle the demands of road racing and...RIC78-7628-1- SKU:
- RIC78-7628-1
- Availability:
- Ships Same Business Day
- Weight:
- 4.40 LBS
$106.99 -
Differential Mini Spool GM 7.5in 28 Spline 78-7528-1
RICHMOND
$112.99A mini spool is the definitive choice for consistent power delivery in tight racing applications where you need both wheels turning at the same speed without the complexity of a full locker. This steel spool eliminates wheel spin and unwanted rpm...RIC78-7528-1- SKU:
- RIC78-7528-1
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$112.99
