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!
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- Qty in Cart
- Quantity
- Price
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Winters Double Bearing Cup Steel Standard Pinion Double WIN7307
WINTERS
$43.99If you're running a Winters Quick Change rear end in competition, the integrity of your pinion bearing support directly impacts gear longevity and differential response under load. The WIN7307 double bearing cup distributes pinion loads across a wider...WIN7307- SKU:
- WIN7307
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- MFG Part #:
- 7307
$43.99 -
Winters Lock-Up Plug 31 Spline 1-3/8 in Long WIN6789
WINTERS
$31.99If you're running a quick-change differential in a racing application, you need a lock-up plug that won't compromise your drivetrain integrity under load. The Winters 31-spline plug delivers precise fitment and reliable engagement, eliminating slippage...WIN6789- SKU:
- WIN6789
- Availability:
- Ships Same Business Day
- Weight:
- 0.47 LBS
- MFG Part #:
- 6789
$31.99 -
Winters tailshaft housing bearing steel Winters Falcon transmission WIN67574
WINTERS
$22.99The Winters Falcon transmission demands precision components to maintain shift quality and transmission longevity under racing loads. This tailshaft housing bearing is a critical wear item that directly impacts drivetrain reliability—replacing it during...WIN67574- SKU:
- WIN67574
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MFG Part #:
- 67574
$22.99 -
Winters Gear Cover Sprint Center 10-Bolt Ball Bearings Aluminum Natural WIN6746
WINTERS
$183.99If you're running a quick-change rear end in a competitive racing environment, gear ratio changes need to happen fast—without compromising reliability. The Winters Gear Cover Sprint Center delivers smooth bearing engagement and efficient heat management,...WIN6746- SKU:
- WIN6746
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- MFG Part #:
- 6746
$183.99 -
Winters HD Sprint Gear Cover Heavy Duty 10-Bolt Ball Bearings Aluminum Natural 6630
WINTERS
$262.99If you're running a Winters Quick Change rear end in sprint car competition, you need a gear cover that matches the demands of high-RPM racing. The Winters HD Sprint Gear Cover 6630 delivers the strength and precision required to handle aggressive...WIN6630- SKU:
- WIN6630
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- MFG Part #:
- 6630
$262.99 -
Winters Drive Yoke Spacer 0.235" Thick Steel Quick Change WIN6532
WINTERS
$21.99Proper driveline spacing is critical to maintaining gear engagement and minimizing wear under racing loads. The Winters Drive Yoke Spacer delivers the precise 0.235" offset your quick change rear end requires for consistent performance and reliability...WIN6532- SKU:
- WIN6532
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MFG Part #:
- 6532
$21.99 -
Winters Posi-Lock Retainer Pinion Shaft Aluminum Quick Change WIN6484
WINTERS
$36.99If you're running a Winters Quick Change rear end, pinion shaft retention is non-negotiable—a loose retainer means lost power transfer and potential drivetrain failure under load. The Winters Posi-Lock Retainer Pinion Shaft is engineered to lock your...WIN6484- SKU:
- WIN6484
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- 6484
$36.99 -
Winters Pinion Retaining Spacer Steel Quick Change WIN5020
WINTERS
$26.99If you're running a Winters Quick Change rear end, the pinion retaining spacer is a critical component that directly impacts assembly security and differential performance. A worn or missing spacer can lead to pinion misalignment, increased wear, and...WIN5020- SKU:
- WIN5020
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- MFG Part #:
- 5020
$26.99 -
Winters 10" Quick Change Lower Shaft Seal Plate 0.750" Thick Double Lip Seal Aluminum 5018
WINTERS
$65.99A quality seal plate is critical to maintaining differential integrity under racing conditions—fluid leakage compromises cooling and lubrication, leading to premature wear or catastrophic failure. The Winters 10" Quick Change Lower Shaft Seal Plate...WIN5018- SKU:
- WIN5018
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- MFG Part #:
- 5018
$65.99 -
Winters heat treated lower shaft 10/10 spline 19.69 in long steel open drive WIN5003
WINTERS
$159.99If you're running a Winters quick change rear end in competition, you need a lower shaft engineered to handle extreme torque without compromise. This heat-treated steel shaft delivers the precision engagement and fatigue resistance required for...WIN5003- SKU:
- WIN5003
- Availability:
- Ships Same Business Day
- Weight:
- 5.24 LBS
- MFG Part #:
- 5003
$159.99 -
Winters Standard Lower Shaft 2nd Gen 10/10 Spline 18.59 in Open Drive Steel WIN4951
WINTERS
$156.99Quick gear changes demand a shaft that won't compromise durability or power transfer—the Winters Standard Lower Shaft delivers both. Built from steel and engineered for Winters 10-inch Quick Change rear ends, this precision component handles the demands...WIN4951- SKU:
- WIN4951
- Availability:
- Ships Same Business Day
- Weight:
- 4.95 LBS
- MFG Part #:
- 4951
$156.99Qty in Cart: 0Quantity:Price:$156.99Subtotal: -
Winters Gear Cover Bolt Sprint Billet 10-Bolt Ball Bearings Aluminum Black Anodized WIN4873
WINTERS
$332.99If you're running a Winters Quick Change rear end in sprint racing, you need a gear cover that can handle continuous high-speed operation without sacrificing reliability. The Winters Gear Cover Bolt Sprint delivers the precision engineering and...WIN4873- SKU:
- WIN4873
- Availability:
- Ships Same Business Day
- Weight:
- 4.73 LBS
- MFG Part #:
- 4873
$332.99 -
Winters Quick Change Gear Set 4400 Series 6 Spline 1" Wide Set 25 WIN4425
WINTERS
$91.99Track performance hinges on your ability to adapt—and the Winters Quick Change Gear Set 4400 Series delivers exactly that flexibility. By swapping gear ratios between sessions, you optimize acceleration and top speed for varying track conditions without...WIN4425- SKU:
- WIN4425
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- MFG Part #:
- 4425
$91.99Qty in Cart: 0Quantity:Price:$91.99Subtotal: -
Winters Quick Change Gear Set 4400 Series 6 Spline 4.11 4.88 Steel WIN4424
WINTERS
$91.99When track conditions change or you need to optimize your launch strategy, a quick gear swap shouldn't require hours of downtime. The Winters 4400 Series Quick Change Gear Set delivers two proven ratios—4.11 and 4.88—in a single package, letting you dial...WIN4424- SKU:
- WIN4424
- Availability:
- Ships Same Business Day
- Weight:
- 3.58 LBS
- MFG Part #:
- 4424
$91.99Qty in Cart: 0Quantity:Price:$91.99Subtotal: -
Winters Quick Change Gear Set 4400 Series 6 Spline 4.11 4.88 Steel WIN4423
WINTERS
$91.99Quick ratio changes are essential for competitive racing—track conditions shift throughout the day, and your gear ratios need to keep pace. The Winters 4400 Series Quick Change Gear Set lets you swap ratios in minutes, not hours, giving you the precision...WIN4423- SKU:
- WIN4423
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- MFG Part #:
- 4423
$91.99 -
Winters Quick Change Gear Set 4400 Series 6 Spline 4.11 4.88 Steel WIN4422
WINTERS
$91.99Quick ratio changes can be the difference between winning and losing at the track. The Winters 4400 Series Quick Change Gear Set eliminates downtime between runs, letting you optimize your gearing for different track conditions without breaking down your...WIN4422- SKU:
- WIN4422
- Availability:
- Ships Same Business Day
- Weight:
- 3.56 LBS
- MFG Part #:
- 4422
$91.99 -
Winters Quick Change Gear Set 4400 Series 6 Spline 4.11 6.96 2.43 4.88 8.26 2.88 Steel WIN4418
WINTERS
$91.99Quick change gear sets are essential for racers who need to optimize performance across different track conditions and racing formats without swapping entire rear ends. The Winters 4400 Series Set 18 delivers two distinct ratios—4.11:1 and 4.88:1—in a...WIN4418- SKU:
- WIN4418
- Availability:
- Ships Same Business Day
- Weight:
- 3.69 LBS
- MFG Part #:
- 4418
$91.99 -
Winters Quick Change Gear Set 4400 Series 6 Spline 4.11 4.88 Steel WIN4417
WINTERS
$91.99Track performance hinges on gear ratio selection, and swapping ratios shouldn't require a trip to the machine shop. The Winters Quick Change Gear Set 4400 Series eliminates downtime between sessions—simply swap your gear set to match track conditions,...WIN4417- SKU:
- WIN4417
- Availability:
- Ships Same Business Day
- Weight:
- 3.76 LBS
- MFG Part #:
- 4417
$91.99 -
Winters Quick Change Gear Set 4400 Series 6 Spline 4.11 4.88 Ratios Steel WIN4416
WINTERS
$91.99Track conditions change, and your gear ratio should too. The Winters 4400 Series Quick Change Gear Set eliminates the need for time-consuming rear-end teardowns, letting you swap between 4.11 and 4.88 ratios in minutes. Whether you're chasing top-end...WIN4416- SKU:
- WIN4416
- Availability:
- Ships Same Business Day
- Weight:
- 3.67 LBS
- MFG Part #:
- 4416
$91.99 -
Winters Quick Change Gear Set 4400 Series 6 Spline 4.11 4.88 Steel WIN4415
WINTERS
$91.99Track performance demands the ability to adapt—and the Winters Quick Change Gear Set 4400 Series gives you that advantage. Swap ratios between rounds without breaking down your differential, letting you dial in the perfect gearing for each track...WIN4415- SKU:
- WIN4415
- Availability:
- Ships Same Business Day
- Weight:
- 3.65 LBS
- MFG Part #:
- 4415
$91.99Qty in Cart: 0Quantity:Price:$91.99Subtotal:
