Quick Change Differentials and Components
Circle Track Quick Change Differentials & Components at JJ Motorsports
Adapt to any track condition with quick change differentials and components from JJ Motorsports. These essential parts allow rapid gear ratio adjustments for optimal torque and speed, providing superior traction and durability in high-stress IMCA, USMTS, and dirt oval racing for late models, modifieds, and street stocks.
Shop trusted brands like PEM for complete assemblies, Frankland for Gleason Torsen diffs, and Coleman Machine for housing bells. Explore related categories such as Circle Track Complete Quick Change Rear-Ends for full setups or Circle Track Quick Change Gears for ratio options.
Top Circle Track Quick Change Differentials & Components
- PEM Quick Change Assembly 4.86 5x5 Hubs Axles QCKSTGN5-486-60CP – Rear Axle Assembly Centered Pinion 10 in Ring Gear 4.86 Ratio Standard Hubs / Rotors 60 in Wide Kit for versatile racing applications.
- PEM Quick Change Assembly No Tubes 4.86 QCNT-486 – Quick Change Assembly No Tubes with 4.86 ratio, designed for custom tube installations in high-performance setups.
- PEM Quick Change Rear 4.11 Max No Tubes QCNT-411MAX – Rear Axle Assembly MAX No Tubes 10 in Ring Gear 4.11 Ratio Each, ideal for maximum strength and lightweight builds.
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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PEM Quick Change Assembly 4.86 5x5 Hubs Axles QCKSTGN5-486-60CP
PEM
$2,399.99Quick-change rear axle assemblies are essential for racers who demand flexibility without sacrificing performance—swapping gear ratios in minutes rather than hours saves you valuable track time and lets you optimize for different courses or conditions...PEMQCKSTGN-486-60CP- SKU:
- PEMQCKSTGN-486-60CP
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$2,399.99 -
PEM Quick Change Assembly No Tubes 4.86 QCNT-486
PEM
$1,685.99Quick-change rear assemblies eliminate downtime between races by allowing you to swap gear ratios in minutes without breaking down the entire housing. For teams running multiple track configurations or testing different setups, a quality quick-change...PEMQCNT-486- SKU:
- PEMQCNT-486
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,685.99 -
Complete Quick Change for Longhorn DLM Rear End Kit
J J MOTORSPORTS
$4,361.91 - $4,400.91Secure your competitive edge with this precision-engineered Quick Change Rear End Kit, custom-tailored for the Longhorn Dirt Late Model chassis. We’ve assembled a comprehensive, race-ready driveline package that combines the legendary reliability...300-8001- SKU:
- 300-8001
- Availability:
- Ships Same Business Day
- Weight:
- 100.00 LBS
$4,361.91 - $4,400.91 -
Complete Quick Change for Rocket XR1 Rear End Kit
J J MOTORSPORTS
$4,400.91When every lap counts on the dirt track, a weak link in your driveline will cost you races. This Complete Quick Change Rear End Kit for the Rocket XR1 eliminates guesswork by combining a proven Winters 10" quick change with 1-ton Wilwood Starlite hubs,...300-8000- SKU:
- 300-8000
- Availability:
- Ships Same Business Day
- Weight:
- 100.00 LBS
$4,400.91Qty in Cart: 0Quantity:Price:$4,400.91Subtotal: -
Rear End Quick Change Fitting for Filler Tank – Aluminum, Black
J J MOTORSPORTS
$22.95If you're running a quick-change rear end with a filler tank system, you need a fitting that handles both function and durability without compromise. This aluminum rear-end quick change fitting replaces your inspection plug with a dedicated -20 AN to -10...RCCH-008- SKU:
- RCCH-008
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$22.95 -
Quick Change Rear End L/M Longhorn 4.86
WINTERS
$3,241.99A quick-change rear end is essential for racers who demand flexibility without sacrificing performance. The L/M Longhorn configuration with 4.86 gearing delivers aggressive acceleration and optimized power delivery for track applications where gear ratio...WIN5270PM-LNH- SKU:
- WIN5270PM-LNH
- Weight:
- 100.00 LBS
$3,241.99 -
Quick Change Rear End L/M Longhorn 4.12
WINTERS
$3,280.99A quick-change rear end is essential for racers who demand flexibility between track configurations and race formats. The L/M Longhorn 4.12 gear ratio delivers aggressive acceleration and responsive handling characteristics ideal for shorter tracks and...WIN5270PM-LNH-412- SKU:
- WIN5270PM-LNH-412
- Weight:
- 100.00 LBS
$3,280.99Qty in Cart: 0Quantity:Price:$3,280.99Subtotal: -
Quick Change Rear End Less Tube 8-Rib Bell
WINTERS
$2,867.99A quick change rear end eliminates the need for lengthy gear ratio changes between races or test sessions, letting you optimize your setup without dropping the entire assembly. The 8-rib bell interface ensures maximum torque transfer and reliable...WIN5270PM-LT- SKU:
- WIN5270PM-LT
- Weight:
- 91.33 LBS
$2,867.99 -
Quick Change Rear End L/M Rocket XR1 4.86
WINTERS
$3,241.99Quick-change rear ends are essential for racers who demand efficiency in the pits—swap gear ratios in minutes without breaking down the entire assembly. The Rocket XR1 4.86 delivers the low-end torque multiplication you need for acceleration-focused...WIN5270PM-RKT- SKU:
- WIN5270PM-RKT
- Weight:
- 100.00 LBS
$3,241.99 -
Quick Change Rear End L/M Rocket XR1 4.12
WINTERS
$3,280.99Quick Change Rear End L/M Rocket XR1 4.12WIN5270PM-RKT-412- SKU:
- WIN5270PM-RKT-412
- Weight:
- 100.00 LBS
$3,280.99Qty in Cart: 0Quantity:Price:$3,280.99Subtotal: -
PEM Quick Change Rear 4.11 Max No Tubes QCNT-411MAX
PEM
$2,226.99Quick ratio changes are essential for competitive racing, and the PEM Quick Change system eliminates hours of downtime by letting you swap gear ratios in minutes without removing the axle tubes. The 4.11 MAX configuration delivers aggressive acceleration...PEMQCNT-411MAX- SKU:
- PEMQCNT-411MAX
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$2,226.99 -
PEM Quick Change Rear 4.11 Max Center Pinion 60 QCKSTGN5-411MAX-60CP
PEM
$3,194.99If you're serious about drag racing or bracket competition, a quick-change rear lets you swap gear ratios between rounds without breaking down your entire axle assembly. The PEM 4.11 Max center pinion gives you the straight-line acceleration needed for...PEMQCKSTGN5-411MAX-60CP- SKU:
- PEMQCKSTGN5-411MAX-60CP
- Availability:
- Ships Same Business Day
- Weight:
- 270.00 LBS
$3,194.99Qty in Cart: 0Quantity:Price:$3,194.99Subtotal: -
PEM Quick Change Rear End 4.11 60in center QCKSTGN5-411-60CP
PEM
$2,439.99Quick-change gearing lets you optimize your setup between rounds without breaking down the rear end, giving you a competitive advantage on unfamiliar tracks. The 4.11 ratio and 60-inch center configuration deliver responsive acceleration for modified...PEMQCKSTGN5-411-60CP- SKU:
- PEMQCKSTGN5-411-60CP
- Availability:
- Ships Same Business Day
- Weight:
- 200.00 LBS
$2,439.99 -
PEM Quick Change Rear 4.11 Max 2in Off Pinion 60 QCKSTGN5-411MAX-2OFF
PEM
$3,194.99Quick-change rear assemblies eliminate downtime between races and track sessions—swap gear ratios in minutes without breaking down the entire axle. The PEM 4.11 Max delivers the acceleration and launch grip you need for drag racing and bracket...PEMQCKSGN5-411MAX-2OFF- SKU:
- PEMQCKSGN5-411MAX-2OFF
- Availability:
- Ships Same Business Day
- Weight:
- 206.00 LBS
$3,194.99 -
PEM Quick Change Assembly No Tubes Max Option 4.86 QCNT-486MAX
PEM
$2,226.99Quick-change rear ends eliminate downtime between races by letting you swap gear ratios in minutes instead of hours. The PEM Max Option design delivers the strength and precision you need for high-horsepower applications, whether you're chasing lap times...PEMQCNT-486MAX- SKU:
- PEMQCNT-486MAX
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$2,226.99 -
PEM Quick Change Assembly Max 4.86 5x5 Hubs Axles QCKSTGN5-486MAX-60CP
PEM
$3,194.99Quick-change rear ends save critical seconds during competition and testing—every adjustment matters when you're chasing lap times or dial-in precision. This PEM assembly delivers a 4.86 gear ratio with 5x5 hub compatibility, engineered for racers who...PEMQCKSTGN5-486MAX-60CP- SKU:
- PEMQCKSTGN5-486MAX-60CP
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$3,194.99 -
PEM Premium Quick Change Gears (15/27) 65054
PEM
$153.99Quick-change gear sets eliminate downtime between race sessions by allowing you to swap ratios in minutes rather than hours—critical when you're chasing optimal performance across multiple track configurations. The PEM Premium set gives you two proven...PEM65054- SKU:
- PEM65054
- Availability:
- Ships Same Business Day
- Weight:
- 5.10 LBS
$153.99 -
PEM Premium Quick Change Gears 65014A
PEM
$153.99Quick-change gear sets eliminate downtime between races by letting you swap ratios in minutes rather than hours. Whether you're fine-tuning for different track conditions or running multiple events, the PEM 65014A gives you the flexibility to optimize...PEM65014A- SKU:
- PEM65014A
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$153.99 -
PEM Premium Quick Change Gears (22/30) 65010A
PEM
$153.99Quick-change gear sets are essential for racers who need multiple rear-end ratios without full differentials swaps—saving valuable pit time and setup flexibility. The PEM Premium 65010A delivers two distinct ratios in a single, robust package, letting...PEM65010A- SKU:
- PEM65010A
- Availability:
- Ships Same Business Day
- Weight:
- 5.10 LBS
$153.99 -
Bearing Pinion Nose Narrow QC0160
FRANKLAND RACING
$13.99The pinion nose bearing is a critical component that handles radial and thrust loads in your differential assembly, directly affecting gear mesh accuracy and drivetrain longevity. A worn or damaged pinion bearing causes excessive play, leading to gear...FRKQC0160- SKU:
- FRKQC0160
- Availability:
- Ships Same Business Day
- Weight:
- 0.27 LBS
$13.99
