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!
- 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...PEMQCKSTGN-486-60CP- SKU:
- PEMQCKSTGN-486-60CP
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$2,399.99 -
Falcon Transmission Kit for 2-Piece Rear Main Seal Kit
J J MOTORSPORTS
$1,965.96A complete transmission overhaul demands precision engineering and reliable components—this kit delivers both. Whether you're rebuilding after high-mileage wear or upgrading for increased power...234-9027- SKU:
- 234-9027
- Availability:
- Ships Same Business Day
- Weight:
- 100.00 LBS
$1,965.96Qty in Cart: 0Quantity:Price:$1,965.96Subtotal: -
Bert LMZ Transmission Kit for 2 Piece Rear Main Seal
J J MOTORSPORTS
$2,547.95The Bert LMZ transmission is engineered for serious drag racing and high-horsepower applications where reliability under extreme load is non-negotiable. This complete kit eliminates the guesswork of...234-9030- SKU:
- 234-9030
- Availability:
- Ships Same Business Day
- Weight:
- 100.00 LBS
$2,547.95Qty in Cart: 0Quantity:Price:$2,547.95Subtotal: -
Brinn Transmission Kit for 1 Piece Rear Main Seal
J J MOTORSPORTS
$2,615.44A quality transmission cooler system is non-negotiable if you're running sustained high-RPM or high-heat applications—and this complete Brinn kit eliminates the guesswork of sourcing compatible...234-9029- SKU:
- 234-9029
- Availability:
- Ships Same Business Day
- Weight:
- 100.00 LBS
$2,615.44 -
Brinn Transmission Kit for 2 Piece Rear Main Seal
J J MOTORSPORTS
$2,624.44A quality transmission cooler system is essential for maintaining optimal fluid temperatures under sustained racing conditions, directly impacting shift reliability and component longevity. This...234-9028- SKU:
- 234-9028
- Availability:
- Ships Same Business Day
- Weight:
- 100.00 LBS
$2,624.44 -
Falcon Transmission Kit for 1-Piece Rear Main Seal Kit
J J MOTORSPORTS
$2,059.95A complete transmission overhaul requires precision-engineered components working in perfect harmony—and this kit delivers exactly that. The Falcon Transmission Kit eliminates the guesswork of...234-9026- SKU:
- 234-9026
- Availability:
- Ships Same Business Day
- Weight:
- 50.00 LBS
$2,059.95Qty in Cart: 0Quantity:Price:$2,059.95Subtotal: -
Dirt Street Stock/Hobby Stock Floater Rear End 2.5" GN Kit
J J MOTORSPORTS
$1,379.45Built for dirt and street stock competitors who demand a reliable, purpose-built rear end assembly, this floater kit eliminates guesswork with a complete solution—no hunting for individual components...234-9025- SKU:
- 234-9025
- Availability:
- Ships Same Business Day
- Weight:
- 100.00 LBS
$1,379.45Qty in Cart: 0Quantity:Price:$1,379.45Subtotal: -
Allstar Performance Remote Fill Tank ALL36110
ALLSTAR PERFORMANCE
$79.99Keep your fluids topped off without the hassle of popping the hood mid-race — the Allstar Performance Remote Fill Tank ALL36110 gives you convenient, accessible fluid management right where you need...ALL36110- SKU:
- ALL36110
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- MFG Part #:
- ALL36110
$79.99 -
Allstar Performance 2 Lever Shifter Black ALL54120
ALLSTAR PERFORMANCE
$78.99A precision floor-mount shifter is essential for any dedicated racer or performance build where clean, predictable gear engagement directly impacts lap times and consistency. The Allstar Performance...ALL54120- SKU:
- ALL54120
- Availability:
- Ships Same Business Day
- Weight:
- 2.62 LBS
- MFG Part #:
- ALL54120
$78.99 -
PEM New Stamped Floater Metric Housing 60in Cent HNMK3003005
PEM
$1,299.99A solid rear axle housing is the foundation of any high-performance drivetrain, and this PEM floater design delivers the structural integrity and load capacity serious racers demand. Whether you're...PEMHNMK3003005- SKU:
- PEMHNMK3003005
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,299.99 -
PEM Quick Change Assembly No Tubes 4.86 QCNT-486
PEM
$1,751.99Quick-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...PEMQCNT-486- SKU:
- PEMQCNT-486
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$1,751.99 -
Winters Falcon Transmission Input Shaft 18 Spline Steel WIN62901
WINTERS
$103.99The Winters Falcon Transmission Input Shaft is the critical link between your engine and transmission—any wear or damage here directly impacts power delivery and shift consistency. This precision...WIN62901- SKU:
- WIN62901
- Availability:
- Ships Same Business Day
- Weight:
- 0.92 LBS
- MFG Part #:
- 62901
$103.99 -
Winters Falcon LM Transmission 2-Speed Manual Aluminum Case 18 Spline Input WIN60100
WINTERS
$1,906.99If you're running late model stock cars or modified classes, you need a transmission that won't let you down when it matters most. The Winters Falcon LM delivers the gear ratios and durability you...WIN60100- SKU:
- WIN60100
- Availability:
- Ships Same Business Day
- Weight:
- 49.00 LBS
- MFG Part #:
- 60100
- Transmission Speeds:
- 2-Speed
- Input Shaft Spline Count:
- 18
- Output Shaft Spline Count:
- 27
- Bellhousing Included:
- No
- Yoke Included:
- No
- Shifter Included:
- No
- Case Material:
- Aluminum
- Gear Ratio (Low):
- 2.40:1
- Gear Ratio (High):
- 1.00:1
- Notes:
- 1.62"-18 spline input shaft. 1-3/16"-27 spline output shaft
$1,906.99Qty in Cart: 0Quantity:Price:$1,906.99Subtotal: -
Allstar Performance Steel Axle Tube 5x5 2.5in Pin 30in ALL68256
ALLSTAR PERFORMANCE
$159.99If you're building a dedicated race car or upgrading your rear axle assembly, this Allstar Performance steel axle tube delivers the structural integrity and precision fitment serious competitors...ALL68256- SKU:
- ALL68256
- Availability:
- Ships Same Business Day
- Weight:
- 16.18 LBS
- MFG Part #:
- ALL68256
$159.99 -
Winters Input Shaft Collar Crank Hub Kit 18 Spline Steel 234-9049
WINTERS
$260.97If you're running a Falcon transmission behind a Chevrolet engine, this input shaft collar and crank hub kit eliminates guesswork and potential misalignment issues that can compromise power transfer...234-9049- SKU:
- 234-9049
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
$260.97 -
Falcon Transmission Tailhousing Bearing and Seal Kit 234-9047
WINTERS
$34.97Worn bearings and seals in your Falcon transmission tailhousing will compromise shift quality and create fluid leaks that compound into bigger problems. This complete kit from Winters Performance...234-9047- SKU:
- 234-9047
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
$34.97 -
Bert Ring Gear Flywheel Kit, Bolts
BERT TRANSMISSIONS
$257.97A quality flywheel assembly is critical for consistent power transfer and reliable engine performance in high-demand racing applications. The Bert Ring Gear Flywheel Kit delivers the precision...234-9039- SKU:
- 234-9039
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
$257.97 -
Heavy Duty 3" Axle Tube Clamp
J J MOTORSPORTS
$12.95Axle tube clamps are critical safety components in racing applications—a failure here can mean loss of vehicle control. This heavy-duty 3" clamp provides the secure, vibration-resistant fastening...RCCH-005- SKU:
- RCCH-005
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- Made In:
- Michigan, USA
- Type:
- Axle Clamp
- Size (tube):
- 3"
- Hardware:
- Included
- Color:
- Black
- Thickness:
- Heavy Duty
$12.95 -
Complete Quick Change for Longhorn DLM Rear End Kit
J J MOTORSPORTS
$4,361.91 - $4,400.91Your competitive edge on the dirt track hinges on driveline efficiency and structural integrity—and this Complete Quick Change Kit delivers both without compromise. Built around Winters' legendary...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...300-8000- SKU:
- 300-8000
- Availability:
- Ships Same Business Day
- Weight:
- 100.00 LBS
$4,400.91
