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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Winters Output Flange Yoke Roller Slide Steel Natural Falcon Tailshaft 62874
WINTERS
$93.99A reliable slip yoke is critical to maintaining proper driveline function and preventing power loss in high-performance applications. The Winters 62874 delivers the durability and precision fit required for Falcon Tailshaft housings, ensuring consistent...WIN62874- SKU:
- WIN62874
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MFG Part #:
- 62874
$93.99 -
Winters Flywheel Housing Assembly Bert/Brinn 6-1/4" Deep Aluminum Kit WIN62843B
WINTERS
$514.99If you're running a Bert or Brinn transmission in your Chevy drag car or street racer, the bellhousing is your critical link between the engine and gearbox—get it wrong, and you're risking catastrophic failure. This Winters aluminum flywheel housing...WIN62843B- SKU:
- WIN62843B
- Availability:
- Ships Same Business Day
- Weight:
- 21.86 LBS
- MFG Part #:
- 62843 w/8251-62447
$514.99 -
Winters Flywheel Housing Assembly 6-1/4" Deep Aluminum with Idler Gear and 63 Tooth Ring Gear WIN62843
WINTERS
$551.99A precision flywheel housing assembly is critical for engine stability, gear synchronization, and reliable power transfer in high-performance applications. The Winters 6-1/4" deep aluminum bellhousing reduces rotating mass while maintaining structural...WIN62843- SKU:
- WIN62843
- Availability:
- Ships Same Business Day
- Weight:
- 20.83 LBS
- MFG Part #:
- 62843
$551.99 -
Winters SBC Crank Coupler 10 Spline 1.375" Input Shaft 2-Piece Seal Steel Cadmium WIN62447
WINTERS
$141.99A quality crankshaft coupler is critical for transmitting engine power reliably without slip or wear—especially in high-rpm racing environments where precision matters. The Winters SBC Crank Coupler delivers that reliability through robust steel...WIN62447- SKU:
- WIN62447
- Availability:
- Ships Same Business Day
- Weight:
- 1.79 LBS
- MFG Part #:
- 62447
$141.99 -
Winters Crank Coupler Standard 18 Spline HTD Pulley Steel for Chevy V8 WIN62446
WINTERS
$139.99The Winters Crank Coupler is essential for maintaining precise crankshaft-to-accessory synchronization in high-performance Chevy V8 applications. With its robust steel construction and secure 18-spline engagement, this coupler delivers consistent power...WIN62446- SKU:
- WIN62446
- Availability:
- Ships Same Business Day
- Weight:
- 1.93 LBS
- MFG Part #:
- 62446
$139.99 -
Winters Falcon Transmission Input Shaft 18/10 Spline Steel WIN62409
WINTERS
$117.99The input shaft is the critical link between your engine and transmission—if it fails or wears, power transfer becomes unpredictable and reliability suffers. This Winters Falcon input shaft delivers the durability and precision fitment your Falcon...WIN62409- SKU:
- WIN62409
- Availability:
- Ships Same Business Day
- Weight:
- 1.12 LBS
- MFG Part #:
- 62409
$117.99 -
Winters Input Collar 18 Spline Steel Falcon Transmission WIN62407
WINTERS
$74.99If you're running a Falcon Transmission in a high-performance application, the input collar is a critical wear point that directly affects power transfer efficiency and shift quality. A worn or damaged collar compromises the connection between your input...WIN62407- SKU:
- WIN62407
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- MFG Part #:
- 62407
$74.99Qty in Cart: 0Quantity:Price:$74.99Subtotal: -
Winters Falcon Transmission Clutch Spacer Steel Natural WIN62354
WINTERS
$2.99Precise clutch engagement relies on correct spacing within your Winters Falcon transmission. This steel spacer maintains exact tolerances between clutch components, preventing slippage and ensuring consistent power transfer under load. Whether you're...WIN62354- SKU:
- WIN62354
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- 62354
$2.99 -
Winters Crankshaft Coupler 18 Spline Steel Small Block Chevy WIN62350-18
WINTERS
$93.99A reliable crankshaft coupler is essential for transmitting power without slippage or deflection—especially when you're pushing your Small Block Chevy to its limits. The Winters 18-spline coupler delivers the precision fit and material durability...WIN62350-18- SKU:
- WIN62350-18
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- MFG Part #:
- 62350-18
$93.99 -
Winters Crankshaft Coupler Standard 18 Spline Steel Chevy V8 WIN62348-18
WINTERS
$81.99A crankshaft coupler is the critical link between your engine's rotating assembly and transmission—any play or failure here compromises power delivery and risks catastrophic damage. The Winters Standard 18-Spline Coupler delivers the precision fit and...WIN62348-18- SKU:
- WIN62348-18
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- MFG Part #:
- 62348-18
$81.99Qty in Cart: 0Quantity:Price:$81.99Subtotal: -
Winters Return Spring Bell Housing for Falcon Transmission WIN62341
WINTERS
$6.99The Winters Return Spring Bell Housing is a critical component for maintaining precise return spring engagement in the Winters Falcon Transmission during high-load racing conditions. A worn or damaged bell housing compromises shift quality and...WIN62341- SKU:
- WIN62341
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- MFG Part #:
- 62341
$6.99 -
Winters Steel Output Shaft for Falcon and Raptor Transmissions WIN61903
WINTERS
$128.99A worn or damaged output shaft compromises your transmission's ability to transfer power reliably under racing loads, risking catastrophic failure on track or at the strip. The Winters Steel Output Shaft delivers the durability and precision engineering...WIN61903- SKU:
- WIN61903
- Availability:
- Ships Same Business Day
- Weight:
- 2.31 LBS
- MFG Part #:
- 61903
$128.99 -
Winters Clutch Spring Spacer 0.130 in Thick Steel Natural WIN61847
WINTERS
$2.99Clutch spring spacing is critical to transmission engagement characteristics and overall drivability in high-performance applications. A worn or incorrect spacer throws off your clutch pack pressure, leading to slippage, inconsistent shifts, and...WIN61847- SKU:
- WIN61847
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- 61847
$2.99Qty in Cart: 0Quantity:Price:$2.99Subtotal: -
Winters Falcon Transmission Aluminum Case 45 lbs 13/16 x 27-spline Output WIN61745
WINTERS
$425.99The Winters Falcon Transmission Aluminum Case delivers lightweight durability without compromising strength—essential for racers who demand reliable gear changes under extreme conditions. At just 45 lbs, this CNC-designed aluminum housing reduces...WIN61745- SKU:
- WIN61745
- Availability:
- Ships Same Business Day
- Weight:
- 12.10 LBS
- MFG Part #:
- 61745
$425.99 -
Winters Falcon Transmission Reverse Counter Shaft Steel WIN61743
WINTERS
$26.99If you're running a Winters Falcon transmission in competition, the reverse counter shaft is a critical component that directly impacts the reliability of your reverse gear engagement under load. A worn or damaged shaft compromises shift quality and can...WIN61743- SKU:
- WIN61743
- Availability:
- Ships Same Business Day
- Weight:
- 6.70 LBS
- MFG Part #:
- 61743
$26.99 -
Winters Sliding Gear Steel Falcon Transmission WIN61741
WINTERS
$134.99Gear slippage and missed shifts cost races. The Winters Sliding Gear Steel is precision-engineered to deliver crisp, reliable gear engagement under the extreme loads of competitive racing. Built from high-quality steel, this component ensures your Falcon...WIN61741- SKU:
- WIN61741
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- MFG Part #:
- 61741
$134.99 -
Winters 4.11 Ring & Pinion 10 Spline Steel Bearings Included WIN5715
WINTERS
$697.99A 4.11 gear ratio strikes the ideal balance between acceleration and drivability, making it the go-to choice for racers and street enthusiasts who demand responsive performance without sacrificing cruising capability. This Winters ring and pinion set...WIN5715- SKU:
- WIN5715
- Availability:
- Ships Same Business Day
- Weight:
- 17.74 LBS
- MFG Part #:
- 5715 w/9147 Option
$697.99Qty in Cart: 0Quantity:Price:$697.99Subtotal: -
Winters 4.11 Ring & Pinion Set 10 Spline Steel 12-Bolt 10 in Quick Change WIN5714
WINTERS
$598.99If you're running a Winters 12-Bolt 10-inch Quick Change differential and need aggressive acceleration without sacrificing midrange performance, the 4.11 ring and pinion set delivers the gear ratio that separates competitive lap times from the field...WIN5714- SKU:
- WIN5714
- Availability:
- Ships Same Business Day
- Weight:
- 14.60 LBS
- MFG Part #:
- 5714 w/9147 Option
$598.99 -
Winters Ring & Pinion 4.86 Ratio 10 Spline with Bearings WIN5401
WINTERS
$614.99If you're running a Winters Quick Change differential in competition, your gear ratio directly impacts acceleration, top-end speed, and overall track performance. The 4.86 ratio in this ring and pinion set delivers aggressive low-end response ideal for...WIN5401- SKU:
- WIN5401
- Availability:
- Ships Same Business Day
- Weight:
- 18.50 LBS
- MFG Part #:
- 5401/8104/9147
$614.99 -
Winters 4.86 Ring & Pinion Steel 10 Spline 12-Bolt 10 in Quick Change WIN5400
WINTERS
$549.99A 4.86 gear ratio delivers aggressive acceleration and higher RPM engagement per gear—essential for bracket racing, drag strips, and short-track competition where quick off-the-line response separates winners from the field. Winters' steel construction...WIN5400- SKU:
- WIN5400
- Availability:
- Ships Same Business Day
- Weight:
- 15.28 LBS
- MFG Part #:
- 5400/9147
$549.99
