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 Ring & Pinion Ford 9in 5.83 ALL70036
ALLSTAR PERFORMANCE
$169.99A 5.83 ring and pinion ratio gives you the aggressive gear reduction needed for quick acceleration and consistent power delivery off the line—essential whether you're bracket racing, drag racing, or running high-horsepower street applications. The...ALL70036- SKU:
- ALL70036
- Availability:
- Ships Same Business Day
- Weight:
- 19.27 LBS
- MFG Part #:
- ALL70036
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 5.67 ALL70034
ALLSTAR PERFORMANCE
$169.99If you're running a Ford 9-inch rear end and need aggressive acceleration with controlled highway cruising, a 5.67 ring and pinion gear ratio delivers the performance balance serious racers and hot rodders demand. This Allstar Performance kit provides...ALL70034- SKU:
- ALL70034
- Availability:
- Ships Same Business Day
- Weight:
- 19.60 LBS
- MFG Part #:
- ALL70034
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 5.43 ALL70032
ALLSTAR PERFORMANCE
$169.99If you're running a Ford 9-inch rear end and need aggressive acceleration response, a 5.43 ring and pinion ratio delivers the gear multiplication required for launch performance without sacrificing reliability. This Allstar Performance kit provides the...ALL70032- SKU:
- ALL70032
- Availability:
- Ships Same Business Day
- Weight:
- 19.50 LBS
- MFG Part #:
- ALL70032
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 5.29 ALL70030
ALLSTAR PERFORMANCE
$169.99If you're running a Ford 9-inch rear end and need to optimize your power delivery, a 5.29 ring and pinion ratio is your ticket to aggressive acceleration and improved launch characteristics. This Allstar Performance kit delivers the precision-cut gearing...ALL70030- SKU:
- ALL70030
- Availability:
- Ships Same Business Day
- Weight:
- 19.67 LBS
- MFG Part #:
- ALL70030
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 5.14 ALL70028
ALLSTAR PERFORMANCE
$169.99A 5.14 ring and pinion ratio transforms your Ford 9-inch differential into a high-revving powerhouse—ideal for acceleration-focused racing where quick spool-up and aggressive gear multiplication matter. Whether you're building a street strip car or a...ALL70028- SKU:
- ALL70028
- Availability:
- Ships Same Business Day
- Weight:
- 18.04 LBS
- MFG Part #:
- ALL70028
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 5.00 ALL70026
ALLSTAR PERFORMANCE
$169.99A 5.00 ring and pinion ratio transforms your Ford 9-inch differential into a high-revving, acceleration-focused setup ideal for drag racing, street performance, and closed-course competition. This Allstar Performance kit delivers the low-end torque...ALL70026- SKU:
- ALL70026
- Availability:
- Ships Same Business Day
- Weight:
- 19.52 LBS
- MFG Part #:
- ALL70026
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 4.86 ALL70024
ALLSTAR PERFORMANCE
$169.99A 4.86 ring and pinion ratio transforms your Ford 9-inch rear end into a high-revving powerhouse, delivering the aggressive acceleration needed for straight-line performance and track dominance. This Allstar Performance kit provides the precision gear...ALL70024- SKU:
- ALL70024
- Availability:
- Ships Same Business Day
- Weight:
- 19.30 LBS
- MFG Part #:
- ALL70024
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 4.71 ALL70022
ALLSTAR PERFORMANCE
$169.99A 4.71 ring and pinion ratio is the sweet spot for street-strip applications and dedicated drag racing builds where you need aggressive acceleration off the line without sacrificing top-end drivability. This Allstar Performance kit delivers the precision...ALL70022- SKU:
- ALL70022
- Availability:
- Ships Same Business Day
- Weight:
- 17.76 LBS
- MFG Part #:
- ALL70022
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 4.56 ALL70020
ALLSTAR PERFORMANCE
$169.99A 4.56 ring and pinion ratio transforms your Ford 9-inch differential into a launch-focused powerhouse, delivering aggressive acceleration and reduced wheel slip off the line. This ratio is the go-to choice for bracket racing, street strip, and...ALL70020- SKU:
- ALL70020
- Availability:
- Ships Same Business Day
- Weight:
- 18.85 LBS
- MFG Part #:
- ALL70020
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 4.33 ALL70018
ALLSTAR PERFORMANCE
$169.99A 4.33 ring and pinion ratio is your answer to aggressive acceleration and improved off-the-line performance, making it the ideal choice for street racing, bracket racing, and high-RPM track applications. This Allstar Performance kit delivers the...ALL70018- SKU:
- ALL70018
- Availability:
- Ships Same Business Day
- Weight:
- 17.63 LBS
- MFG Part #:
- ALL70018
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 4.11 ALL70016
ALLSTAR PERFORMANCE
$169.99A 4.11 ring and pinion ratio transforms your Ford 9-inch differential into a hard-hitting gear set engineered for acceleration and low-end torque response. Whether you're building a dedicated track car or upgrading a street machine, this ratio delivers...ALL70016- SKU:
- ALL70016
- Availability:
- Ships Same Business Day
- Weight:
- 19.15 LBS
- MFG Part #:
- ALL70016
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 3.89 ALL70014
ALLSTAR PERFORMANCE
$169.99A 3.89 ring and pinion ratio gives you the muscle you need for street-strip performance without sacrificing highway cruising. If you're running a Ford 9-inch and want quicker acceleration off the line while maintaining reasonable RPM on the highway, this...ALL70014- SKU:
- ALL70014
- Availability:
- Ships Same Business Day
- Weight:
- 19.22 LBS
- MFG Part #:
- ALL70014
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 3.70 ALL70012
ALLSTAR PERFORMANCE
$169.99A 3.70 ring and pinion ratio transforms your Ford 9-inch rear end into a responsive, quick-accelerating powerhouse—ideal for drag racing, road course competition, or street performance where low-end grunt matters. This Allstar Performance kit delivers...ALL70012- SKU:
- ALL70012
- Availability:
- Ships Same Business Day
- Weight:
- 19.49 LBS
- MFG Part #:
- ALL70012
$169.99 -
Allstar Performance Ring & Pinion Ford 9in 3.50 ALL70010
ALLSTAR PERFORMANCE
$169.99A properly matched ring and pinion is fundamental to rear axle performance, directly influencing your engine's RPM band, acceleration response, and overall drivability. The Allstar Performance 3.50 ratio delivers the ideal balance for street and moderate...ALL70010- SKU:
- ALL70010
- Availability:
- Ships Same Business Day
- Weight:
- 18.76 LBS
- MFG Part #:
- ALL70010
$169.99 -
Allstar Performance 9in Non Floater Housing Kit 60in w/ GM Mounts ALL68759
ALLSTAR PERFORMANCE
$1,179.99If you're building a serious G-Body platform, you need a robust rear axle housing that can handle both street and strip duties without compromise. This Allstar Performance 9-inch non-floater kit delivers the structural rigidity and load capacity that...ALL68759- SKU:
- ALL68759
- Availability:
- Ships Same Business Day
- Weight:
- 94.60 LBS
- MFG Part #:
- ALL68759
$1,179.99 -
Allstar Performance 9in Non Floater Housing Kit 58in w/ GM Mounts ALL68758
ALLSTAR PERFORMANCE
$1,179.99If you're building a high-performance rear end for a classic G-Body, this 9-inch housing kit delivers the structural foundation you need for serious power. The 58-inch width with GM mounts eliminates custom fabrication headaches, while the solid axle...ALL68758- SKU:
- ALL68758
- Availability:
- Ships Same Business Day
- Weight:
- 94.60 LBS
- MFG Part #:
- ALL68758
$1,179.99 -
Allstar Performance 9in Non Floater Housing Kit 60in ALL68757
ALLSTAR PERFORMANCE
$999.99If you're building a high-performance rear axle assembly for your GM G-Body, this Allstar 9-inch non-floater housing kit delivers the strength and precision you need for consistent power delivery and reliability on the track or street. The 60-inch width...ALL68757- SKU:
- ALL68757
- Availability:
- Ships Same Business Day
- Weight:
- 86.30 LBS
- MFG Part #:
- ALL68757
$999.99 -
Allstar Performance 9in Non Floater Housing Kit 58in ALL68756
ALLSTAR PERFORMANCE
$999.99If you're building a dedicated 9-inch rear axle setup for your GM G-Body, this Allstar Performance housing kit delivers the structural foundation you need without compromise. A solid non-floater design paired with 3-inch tubes and 58-inch width gives you...ALL68756- SKU:
- ALL68756
- Availability:
- Ships Same Business Day
- Weight:
- 95.00 LBS
- MFG Part #:
- ALL68756
$999.99 -
Allstar Performance Differential Shim Kit for Ford 8" Axle ALL68639
ALLSTAR PERFORMANCE
$37.99Proper differential setup is critical to reliability and performance, and getting pinion depth and bearing preload wrong will result in premature failure or catastrophic damage. This Allstar Performance Shim Kit provides all the precision components you...ALL68639- SKU:
- ALL68639
- Availability:
- Ships Same Business Day
- Weight:
- 1.46 LBS
- MFG Part #:
- ALL68639
$37.99 -
Allstar Performance Shim Kit for Mopar 8-3/4 with 742 Casting 1.796" I.D. Carrier Bearings ALL68637
ALLSTAR PERFORMANCE
$59.99If you're rebuilding or servicing a Mopar 8-3/4 differential with a 742 casting, proper pinion depth and bearing preload are non-negotiable—get them wrong and you're looking at premature wear, noise, and potential drivetrain failure. This Allstar...ALL68637- SKU:
- ALL68637
- Availability:
- Ships Same Business Day
- Weight:
- 1.62 LBS
- MFG Part #:
- ALL68637
$59.99
