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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Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8531
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8531 is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance. Constructed from durable steel, this gear set ensures...WIN8531- SKU:
- WIN8531
- Availability:
- Ships Same Business Day
- Weight:
- 6.88 LBS
- MFG Part #:
- 8531
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8530A
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8530A is engineered for high-performance racing applications, offering versatility and durability. This gear set allows for quick ratio changes, enabling racers to fine-tune their...WIN8530A- SKU:
- WIN8530A
- Availability:
- Ships Same Business Day
- Weight:
- 6.81 LBS
- MFG Part #:
- 8530A
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8530
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8530 is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance across various track conditions. Constructed from...WIN8530- SKU:
- WIN8530
- Availability:
- Ships Same Business Day
- Weight:
- 6.79 LBS
- MFG Part #:
- 8530
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8529
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8529 is engineered for high-performance racing applications, offering versatility and durability. This gear set allows for quick ratio changes, enabling racers to fine-tune their...WIN8529- SKU:
- WIN8529
- Availability:
- Ships Same Business Day
- Weight:
- 6.73 LBS
- MFG Part #:
- 8529
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8528A
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8528A is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance across various track conditions. Constructed from...WIN8528A- SKU:
- WIN8528A
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- MFG Part #:
- 8528A
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline Steel 4.12 4.86 Ratios WIN8528
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline Steel 4.12 4.86 Ratios WIN8528 is engineered for high-performance racing applications, offering versatility with multiple gear ratios to suit various track conditions. Constructed from durable...WIN8528- SKU:
- WIN8528
- Availability:
- Ships Same Business Day
- Weight:
- 6.79 LBS
- MFG Part #:
- 8528
$110.99 -
Winters Quick Change Gear Set 27 10 Spline 4.12 4.86 Steel WIN8527
WINTERS
$110.99The Winters Quick Change Gear Set 27 is engineered for high-performance racing applications, offering versatility with 4.12 and 4.86 gear ratios. Constructed from durable steel, this gear set ensures longevity and reliability on the track. Compatible...WIN8527- SKU:
- WIN8527
- Availability:
- Ships Same Business Day
- Weight:
- 6.76 LBS
- MFG Part #:
- 8527
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.43 3.84 4.86 5.22 4.53 Steel WIN8526
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.43 3.84 4.86 5.22 4.53 Steel WIN8526 is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance across various track conditions...WIN8526- SKU:
- WIN8526
- Availability:
- Ships Same Business Day
- Weight:
- 6.43 LBS
- MFG Part #:
- 8526
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.53 3.75 4.86 5.34 4.42 Steel WIN8525
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series Set 25 is engineered for high-performance racing applications, offering a versatile range of gear ratios to suit various track conditions. Constructed from premium steel, these gears ensure durability and...WIN8525- SKU:
- WIN8525
- Availability:
- Ships Same Business Day
- Weight:
- 6.41 LBS
- MFG Part #:
- 8525
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8524
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8524 is engineered for high-performance racing applications, offering versatility and durability. This gear set allows for quick ratio changes, enabling racers to fine-tune their...WIN8524- SKU:
- WIN8524
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- MFG Part #:
- 8524
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline Steel 4.12 4.86 Ratios WIN8523
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series Set 23 is engineered for high-performance racing applications, offering versatility with 4.12 and 4.86 ratios. Constructed from durable steel, this gear set ensures longevity and reliability on the track. ...WIN8523- SKU:
- WIN8523
- Availability:
- Ships Same Business Day
- Weight:
- 6.77 LBS
- MFG Part #:
- 8523
$110.99 -
Winters Quick Change Gear Set 22 10 Spline 4.12 4.86 Ratios Steel WIN8522
WINTERS
$110.99The Winters Quick Change Gear Set 22 is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance. Designed for 10-spline quick change rear ends, this steel gear set provides durability and...WIN8522- SKU:
- WIN8522
- Availability:
- Ships Same Business Day
- Weight:
- 6.57 LBS
- MFG Part #:
- 8522
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 6.29 2.70 4.86 7.41 3.18 Steel WIN8521A
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 6.29 2.70 4.86 7.41 3.18 Steel WIN8521A is engineered for high-performance racing applications, offering versatile gear ratios to suit various track conditions. Crafted from durable steel, this...WIN8521A- SKU:
- WIN8521A
- Availability:
- Ships Same Business Day
- Weight:
- 6.73 LBS
- MFG Part #:
- 8521A
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 6.29 2.70 4.86 7.41 3.18 Steel WIN8521
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series Set 21 is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance. Constructed from durable steel, this gear set ensures longevity and reliability...WIN8521- SKU:
- WIN8521
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- MFG Part #:
- 8521
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 5.36 3.17 4.86 6.31 3.74 Steel WIN8520A
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 5.36 3.17 4.86 6.31 3.74 Steel WIN8520A is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance across various track conditions...WIN8520A- SKU:
- WIN8520A
- Availability:
- Ships Same Business Day
- Weight:
- 6.55 LBS
- MFG Part #:
- 8520A
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 Ratio 5.36 3.17 4.86 Ratio 6.31 3.74 WIN8520
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series is engineered for high-performance racing applications, offering versatility and durability. This set includes two ratios: 4.12 with options of 5.36 and 3.17, and 4.86 with options of 6.31 and 3.74, all...WIN8520- SKU:
- WIN8520
- Availability:
- Ships Same Business Day
- Weight:
- 6.53 LBS
- MFG Part #:
- 8520
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 Ratio 4.91 3.46 4.86 Ratio 5.78 4.08 Steel WIN8519
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series Set 19 is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance. Constructed from durable steel, this gear set ensures longevity and reliability...WIN8519- SKU:
- WIN8519
- Availability:
- Ships Same Business Day
- Weight:
- 6.47 LBS
- MFG Part #:
- 8519
$110.99 -
Winters Quick Change Gear Set 18A 10 Spline 4.12 Ratio 5.24 3.24 4.86 Ratio 6.18 3.82 WIN8518A
WINTERS
$110.99The Winters Quick Change Gear Set 18A is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance. Crafted from durable steel, this gear set ensures longevity and reliability under demanding...WIN8518A- SKU:
- WIN8518A
- Availability:
- Ships Same Business Day
- Weight:
- 6.52 LBS
- MFG Part #:
- 8518A
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 1-3/8" Steel 4.12 5.20/3.27 4.86 6.12/3.85 WIN8518
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series Set 18 is engineered for high-performance applications, offering versatile gear ratios to suit various racing conditions. Crafted from durable steel, this 10-spline gear set ensures longevity and reliability...WIN8518- SKU:
- WIN8518
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- MFG Part #:
- 8518
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 Ratio 4.81 3.53 4.86 Ratio 5.67 4.17 Steel WIN8517A
WINTERS
$110.99The Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 Ratio 4.81 3.53 4.86 Ratio 5.67 4.17 Steel WIN8517A is engineered for high-performance racing applications, offering versatile gear ratios to optimize vehicle performance across various track...WIN8517A- SKU:
- WIN8517A
- Availability:
- Ships Same Business Day
- Weight:
- 6.44 LBS
- MFG Part #:
- 8517A
$110.99