Differentials and Differential Carriers
Circle Track Differentials & Differential Carriers at JJ Motorsports
Enhance traction and power delivery in your circle track racer with high-performance differentials and carriers from JJ Motorsports. Designed for reliable torque distribution and durability under extreme racing loads, these lockers and Torsen diffs are ideal for IMCA, USMTS, late models, modifieds, and street stocks, ensuring consistent performance on dirt ovals with options for quick change and Ford 9in setups.
Shop trusted brands like Winters for billet aluminum lockers, Frankland for Gleason Torsen diffs, and Detroit Locker for robust iron carriers. Explore related categories such as Circle Track Differentials and Rear End Components for complete rear end solutions or Circle Track Ring and Pinion Gears for gear upgrades.
Top Circle Track Differentials & Differential Carriers
- Winters Billet Aluminum Locker 2.33 in Side Gear Spline Quick Change WIN5114-01 – High-performance differential carrier for quick change rear end setups, made from billet aluminum for strength and durability, ideal for racing.
- Gleason Torsen Diff QC w/Bearings KT0100 – Differential carrier with Gleason Torsen, 31 spline, includes bearings and shims, iron construction for Frankland / Winters Quick Change.
- Detroit Locker - Ford 9in 31-Spline Center R18703A – Differential carrier for circle track, Detroit Locker, 31 spline, iron construction for Ford 9 in.
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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Winters Billet Aluminum Locker 2.33 in Side Gear Spline Quick Change WIN5114-01
WINTERS
$757.99If you're running a Winters Quick Change rear end, the differential carrier is your foundation for consistent traction and reliability under load. This billet aluminum locker delivers spool-type grip on straightaways while automatically unlocking in...WIN5114-01- SKU:
- WIN5114-01
- Availability:
- Ships Same Business Day
- Weight:
- 13.44 LBS
- MFG Part #:
- 5114-01
$757.99 -
Gleason Torsen Diff QC w/Bearings KT0100
FRANKLAND RACING
$1,669.99A quality limited-slip differential is fundamental to consistent lap times and predictable handling under load. The Gleason Torsen diff delivers torque-biasing performance without the maintenance headaches of clutch-type units, while the quick-change...FRKKT0100- SKU:
- FRKKT0100
- Availability:
- Ships Same Business Day
- Weight:
- 27.48 LBS
- MFG Part #:
- KT0100
$1,669.99 -
Detroit Locker - Ford 9in 31-Spline Center R18703A
DETROIT LOCKER-TRACTECH
$964.99A quality differential locker is essential for consistent traction on the track—whether you're drag racing, circle tracking, or pushing hard in competition. The Detroit Locker delivers mechanical lock-up that keeps both rear wheels turning at the same...DETR18703A- SKU:
- DETR18703A
- Availability:
- Ships Same Business Day
- Weight:
- 16.20 LBS
- MFG Part #:
- R18703A
$964.99 -
Detroit Truetrac - Ford 8in 28-Spline 912A616
DETROIT LOCKER-TRACTECH
$814.99The Detroit Truetrac limited-slip differential is engineered to maximize traction and cornering performance on both street and track applications. Unlike open differentials, the Truetrac's helical gear design provides automatic load-biasing without...DET912A616- SKU:
- DET912A616
- Availability:
- Ships Same Business Day
- Weight:
- 16.60 LBS
- MFG Part #:
- 912A616
$814.99 -
Detroit Truetrac - Ford 9in 28-Spline 912A587
DETROIT LOCKER-TRACTECH
$685.99The Detroit Truetrac is a helical limited-slip differential that delivers consistent, predictable power delivery to both rear wheels without the maintenance demands of clutch-type units. If you're running a Ford 9-inch rear and need reliable traction...DET912A587- SKU:
- DET912A587
- Availability:
- Ships Same Business Day
- Weight:
- 16.46 LBS
- MFG Part #:
- 912A587
$685.99 -
Detroit Truetrac - GM 7.625 10-Bolt 912A317
DETROIT LOCKER-TRACTECH
$642.99A quality limited-slip differential is essential for consistent power delivery and predictable handling on track or strip. The Detroit Truetrac uses helical gear design to automatically bias torque to the wheel with more traction, eliminating the...DET912A317- SKU:
- DET912A317
- Availability:
- Ships Same Business Day
- Weight:
- 20.57 LBS
- MFG Part #:
- 912A317
$642.99 -
Detroit Truetrac - GM 7.5 26-Spline 911A415
DETROIT LOCKER-TRACTECH
$659.99The Detroit Truetrac is a helical-gear limited-slip differential that delivers consistent power to both wheels without the maintenance headaches of clutch-pack designs. If you're running a GM 7.5 rear and want predictable traction during acceleration and...DET911A415- SKU:
- DET911A415
- Availability:
- Ships Same Business Day
- Weight:
- 20.88 LBS
- MFG Part #:
- 911A415
$659.99 -
Detroit Truetrac - GM 7.5 26-Spline 911A319
DETROIT LOCKER-TRACTECH
$653.99The Detroit Truetrac is a helical-gear limited-slip differential that delivers predictable power distribution without the maintenance headaches of clutch-type designs. If you're running a GM 7.5 rear and need confident cornering grip with straight-line...DET911A319- SKU:
- DET911A319
- Availability:
- Ships Same Business Day
- Weight:
- 20.69 LBS
- MFG Part #:
- 911A319
$653.99 -
Eaton Posi - GM 7.5 10-Bolt 26-Spline 19663-010
DETROIT LOCKER-TRACTECH
$696.99If you're running a GM 7.5 10-bolt and need predictable traction without the complexity of electronic controls, the Eaton Posi differential carrier is the proven choice for street and track use. This unit delivers consistent power distribution to both...DET19663-010- SKU:
- DET19663-010
- Availability:
- Ships Same Business Day
- Weight:
- 17.13 LBS
- MFG Part #:
- 19663-010
$696.99 -
Eaton Posi - GM 10-Bolt 64-82 8.2in 19603-010
DETROIT LOCKER-TRACTECH
$750.99If you're running a classic Chevy with a 10-bolt and need predictable, straight-line traction without the chatter and slip of an open diff, the Eaton Posi is your answer. This limited-slip carrier locks both wheels under load, giving you the grip you...DET19603-010- SKU:
- DET19603-010
- Availability:
- Ships Same Business Day
- Weight:
- 20.25 LBS
- MFG Part #:
- 19603-010
$750.99 -
Winters Differential Carrier 2nd Gen TrackStar Aluminum End Cap Steel 10 in Quick Change WIN3224-01
WINTERS
$1,940.99If you're running a Winters 10-inch quick change rear end, the differential carrier is your foundation for consistent power delivery and predictable handling under load. This 2nd Gen TrackStar unit combines steel durability with an aluminum end cap to...WIN3224-01- SKU:
- WIN3224-01
- Availability:
- Ships Same Business Day
- Weight:
- 24.10 LBS
- MFG Part #:
- 3224-01
$1,940.99
