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 WIN8536
WINTERS
$110.99When track conditions change, your gear ratios should too—without pulling your entire differential apart. The Winters 8500 Series Quick Change Gear Set gives you two proven ratios (4.12 and 4.86) ready to swap in minutes, letting you dial in the perfect...WIN8536- SKU:
- WIN8536
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- MFG Part #:
- 8536
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 5.82 2.92 4.86 6.86 3.44 WIN8535
WINTERS
$110.99Track performance hinges on gear selection, and the Winters Quick Change 8500 Series Set 35 gives you the flexibility to dial in your ratios between rounds without swapping rear ends. Whether you're chasing ET in bracket racing or optimizing launch grip...WIN8535- SKU:
- WIN8535
- Availability:
- Ships Same Business Day
- Weight:
- 6.54 LBS
- MFG Part #:
- 8535
$110.99 -
Winters Quick Change Gear Set 34A 16/22 Teeth 10 Spline 8500 Series WIN8534A
WINTERS
$110.99If you're running a Winters 8500 Series quick change rear end, selecting the right gear set is critical to extracting maximum performance from your platform. The 34A gear set delivers two proven ratio options—4.12 and 4.86—allowing you to dial in the...WIN8534A- SKU:
- WIN8534A
- Availability:
- Ships Same Business Day
- Weight:
- 6.56 LBS
- MFG Part #:
- 8534A
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8534
WINTERS
$110.99Quick-change rear ends demand precision gear sets that deliver consistent performance across varying track conditions. The Winters 8500 Series Set 34 gives you two proven ratios in a single package—swap between the 4.12 and 4.86 without breaking down...WIN8534- SKU:
- WIN8534
- Availability:
- Ships Same Business Day
- Weight:
- 6.58 LBS
- MFG Part #:
- 8534
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 7.00 2.42 4.86 8.26 2.86 Steel WIN8533
WINTERS
$110.99If you're running a Winters 8500 Series quick change rear end, swapping gear ratios between rounds is non-negotiable for competitive racing. This 10-spline gear set gives you dual ratio options—4.12 and 4.86—letting you dial in the perfect final drive...WIN8533- SKU:
- WIN8533
- Availability:
- Ships Same Business Day
- Weight:
- 6.96 LBS
- MFG Part #:
- 8533
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8532A
WINTERS
$110.99When track conditions shift, your gear ratios need to adapt instantly—not after a lengthy rear-end swap. The Winters 8500 Series Quick Change Gear Set lets you swap between 4.12 and 4.86 ratios in minutes, keeping you competitive across varied racing...WIN8532A- SKU:
- WIN8532A
- Availability:
- Ships Same Business Day
- Weight:
- 6.66 LBS
- MFG Part #:
- 8532A
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8532
WINTERS
$110.99Track performance hinges on dialing in the right gear ratio for your specific racing discipline—and the Winters Quick Change 8500 Series makes swapping ratios between sessions seamless. With dual ratio configurations (4.12 and 4.86) engineered to...WIN8532- SKU:
- WIN8532
- Availability:
- Ships Same Business Day
- Weight:
- 6.60 LBS
- MFG Part #:
- 8532
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8531A
WINTERS
$110.99Quick gear changes are critical in competitive racing—they let you dial in performance for different track conditions without breaking down your entire rear end. The Winters 8500 Series 31A gives you two proven ratios in one compact package, so you can...WIN8531A- SKU:
- WIN8531A
- Availability:
- Ships Same Business Day
- Weight:
- 6.92 LBS
- MFG Part #:
- 8531A
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8531
WINTERS
$110.99When track conditions or competition classes demand gear ratio changes, swapping ratios shouldn't cost you hours or require a rear-end rebuild. The Winters 8500 Series Quick Change Gear Set lets you dial in your final drive in minutes—switching between 4...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
$110.99Quick ratio changes are essential for competitive racing—track conditions shift, and your gear set needs to keep pace. The Winters 8500 Series Quick Change allows you to swap ratios in minutes, not hours, giving you the tuning flexibility to optimize...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
$110.99When you're chasing consistency across multiple track configurations, gear ratio flexibility becomes non-negotiable. The Winters 8500 Series Quick Change Gear Set delivers dual ratios—4.12 and 4.86—allowing you to optimize acceleration and top speed...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
$110.99Track conditions change, and your gear ratios need to match. The Winters Quick Change Gear Set 8500 Series lets you swap ratios in minutes—no teardown required—so you can dial in the perfect setup for qualifying, practice, or race day. Built from steel...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
$110.99If you're running a Winters 8500 Series quick change rear end, swapping gear ratios between races is the fastest way to dial in your setup for different track layouts and conditions. This steel gear set gives you two proven ratios—4.12 and 4.86—so you...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
$110.99Quick change gear sets are essential for racers who demand flexibility across different track configurations without swapping entire rear ends. The Winters 8500 Series lets you dial in your final drive ratio between runs, optimizing acceleration and top...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
$110.99If you're running a quick change rear end in a high-powered racing platform, gear ratio selection directly impacts your acceleration, top-end velocity, and overall track performance. The Winters 8527 gear set gives you two proven ratio options—4.12 for...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
$110.99If you're running a Winters 8500 Series quick change rear end, this gear set gives you the flexibility to dial in the perfect ratio for your specific track and class. The 10-spline design ensures solid power transfer under hard acceleration, while the...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
$110.99Quick change gear sets are essential for racers who demand flexibility across varying track conditions without the downtime of traditional rear-end swaps. The Winters 8500 Series Set 25 delivers six precision-engineered gear ratios in a single package,...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
$110.99When track conditions demand precision gear selection, wasting time swapping entire differentials costs you valuable seat time and competitive edge. The Winters 8500 Series Quick Change Gear Set lets you switch between 4.12 and 4.86 ratios in minutes—no...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
$110.99Quick gear changes can make or break your race day—this Winters 8500 Series gear set eliminates the guesswork with two proven ratios engineered for different track conditions and racing disciplines. Whether you're tuning for acceleration or top-end...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
$110.99If you're running a quick-change rear end on the track, gear ratio selection directly impacts your launch characteristics, top-end capability, and overall ET. The Winters 8522 gives you two proven ratios in a single, precision-engineered steel...WIN8522- SKU:
- WIN8522
- Availability:
- Ships Same Business Day
- Weight:
- 6.57 LBS
- MFG Part #:
- 8522
$110.99
