Drivetrain
Circle Track Drivetrain Parts: Transmissions, Clutches & Shifters for IMCA Racing at JJ Motorsports
Transfer power efficiently in your circle track racer with premium drivetrain components from JJ Motorsports. Our selection includes transmissions, clutches, shifters, differentials, bellhousings, and more, designed for superior performance, durability, and quick shifts in late models, modifieds, street stocks, and IMCA dirt racing. These high-quality parts ensure reliable power delivery and endurance under competitive track conditions.
Shop trusted brands like Winters Performance and Maxima Racing Oils. Explore related categories such as circle track chassis components for frame upgrades or circle track brakes for stopping power.
Top Circle Track Drivetrain Products
- Winters Falcon LM Transmission 2-Speed Manual Aluminum Case 18 Spline Input WIN60100 – High-performance 2-speed manual transmission for late model racing, with aluminum case, internal hydraulic clutch, IMCA approved for Stock Car, Modified, and Late Model classes; includes crankshaft coupler, 2.4:1 low gear, 1:1 high, reverse, 18 spline input, 27 spline output, 21-5/8" length, and 43 lbs weight.
- 2-Lever Floor Mount Shifter Assembly - Black Aluminum for IMCA UMP Racing – Durable shifter for IMCA and UMP racing, made from high-quality aluminum with black anodized finish; weighs 2 lbs, includes hardware for quick installation, and offers universal fit for efficient gear changes.
- Chevy Clutch Hydraulic Release Throwout Bearing Kit - Racing – Upgrades drivetrain with easy installation; includes hydraulic release bearing, CNC-machined housing, anti-rotation studs, adjusting lock nuts, AN Teflon-lined hose, and adapter fittings; compatible with Chevrolet, BOP, GMC manual transmissions and 5.5-7.25" racing clutches; features fail-safe design and lower pedal effort.
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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- Price
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Winters 27.5in Steel Gun-Drilled Axle 31 Spline Carrier 24 Spline Drive Flange WIN5067G-27.5
WINTERS
$182.99If you're running a quick-change rear end in competition, axle strength and weight savings directly impact your 60-foot times and overall reliability. The Winters 27.5-inch gun-drilled axle delivers the spline capacity you need for consistent power...WIN5067G-27.5- SKU:
- WIN5067G-27.5
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- MFG Part #:
- 5067G-27.5
$182.99Qty in Cart: 0Quantity:Price:$182.99Subtotal: -
Winters Solid Axle 34in 31 Spline Carrier 24 Spline Drive Flange Steel Natural WIN5067-34
WINTERS
$128.99If you're running a solid axle setup in competition, your axle shafts need to handle sustained power delivery without flex or failure. The Winters 34-inch solid axle combines a robust 31-spline carrier with a 24-spline drive flange, giving you the...WIN5067-34- SKU:
- WIN5067-34
- Availability:
- Ships Same Business Day
- Weight:
- 11.00 LBS
- MFG Part #:
- 5067-34
$128.99 -
Winters 33in Solid Axle 31 Spline Carrier 24 Spline Drive Flange 5067-33
WINTERS
$118.99If you're running a solid axle setup, your carrier and drive flange must handle continuous high-torque demands without compromise. The Winters 33-inch solid axle delivers the spline count and steel construction you need to eliminate flex, reduce...WIN5067-33- SKU:
- WIN5067-33
- Availability:
- Ships Same Business Day
- Weight:
- 11.34 LBS
- MFG Part #:
- 5067-33
$118.99Qty in Cart: 0Quantity:Price:$118.99Subtotal: -
Winters Aluminum Yoke for Quick Change 3.25" with Stainless Steel Sleeve 5038AS
WINTERS
$169.99If you're running a quick change rear end in a race car or high-performance build, your driveline components need to handle sustained power without flex or failure. The Winters Aluminum Yoke with stainless steel sleeve delivers the durability and...WIN5038AS- SKU:
- WIN5038AS
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MFG Part #:
- 5038AS
$169.99 -
Winters steel yoke 3-1/4 inch 1-1/4 inch 10 spline Dana 1310 series 5038
WINTERS
$48.99If you're running a Dana 1310 Series drivetrain in a high-performance or racing application, you need a yoke that can handle the torque and vibration without compromise. The Winters steel yoke delivers the rigid, precision-machined connection your...WIN5038- SKU:
- WIN5038
- Availability:
- Ships Same Business Day
- Weight:
- 1.92 LBS
- MFG Part #:
- 5038
$48.99 -
Winters Ultra Light Aluminum Spool 31 Spline 10 in Quick Change WIN5034-11UL
WINTERS
$399.99Reducing rotational mass in your Quick Change setup directly improves acceleration response and lap times—especially critical in bracket racing and circle track competition. The Winters Ultra Light Aluminum Spool delivers the strength you need without...WIN5034-11UL- SKU:
- WIN5034-11UL
- Availability:
- Ships Same Business Day
- Weight:
- 5.17 LBS
- MFG Part #:
- 5034-11UL
$399.99 -
Winters 31 Spline Aluminum Spool for 10" Quick Change Rear End WIN5034-11A
WINTERS
$324.99If you're running a Winters 10-inch Quick Change rear end, this aluminum spool is the direct-bolt upgrade that reduces rotational mass and sharpens your acceleration off the line. The 31-spline design locks your axles in with zero slop, delivering...WIN5034-11A- SKU:
- WIN5034-11A
- Availability:
- Ships Same Business Day
- Weight:
- 5.72 LBS
- MFG Part #:
- 5034-11A
$324.99 -
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
$91.99 -
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
$91.99 -
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
$91.99Qty in Cart: 0Quantity:Price:$91.99Subtotal: -
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:
