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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Bert Plunger Small Ball 1/4in Diameter SG-1035-01
BERT TRANSMISSIONS
$17.49If you're running a Bert Second Gen transmission, the plunger assembly is critical to smooth, reliable shifting under load. This OEM-spec plunger ensures consistent engagement and reduces the risk of...BERSG-1035-01- SKU:
- BERSG-1035-01
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$17.49 -
Bert Plug 3/4in Cup 76
BERT TRANSMISSIONS
$1.99Freeze plugs are critical wear items that prevent catastrophic coolant leakage and engine damage in high-performance applications. The Bert Plug 3/4in Cup 76 delivers reliable sealing for Bert...BER76- SKU:
- BER76
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$1.99 -
Allstar Performance Yoke QC Billet Steel Standard Length ALL68387
ALLSTAR PERFORMANCE
$184.99If you're running a quick-change rear end, you need a pinion yoke that matches your driveline's precision and reliability. The Allstar Performance ALL68387 delivers the strength of billet steel...ALL68387- SKU:
- ALL68387
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
$184.99Qty in Cart: 0Quantity:Price:$184.99Subtotal: -
Winters Side Bell 10in 8 Rib Driver Side Magnesium Natural K5016-02
WINTERS
$259.99If you're running a Winters Quick Change rear end, the structural integrity of your side bell directly impacts how well your differential performs under load. This K5016-02 magnesium side bell...WINK5016-02- SKU:
- WINK5016-02
- Availability:
- Ships Same Business Day
- Weight:
- 8.74 LBS
- MFG Part #:
- K5016-02
$259.99Qty in Cart: 0Quantity:Price:$259.99Subtotal: -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 7.32 2.32 4.86 8.64 2.73 Steel WIN8552
WINTERS
$110.99If you're running a quick change rear end, swapping gear ratios between rounds is non-negotiable—and this Winters set gives you two proven ratios in one package. The 4.12 and 4.86 options cover...WIN8552- SKU:
- WIN8552
- Availability:
- Ships Same Business Day
- Weight:
- 6.97 LBS
- MFG Part #:
- 8552
$110.99 -
Winters Falcon Transmission Thrust Bearing WIN67562
WINTERS
$4.99A failing thrust bearing will destroy your Winters Falcon transmission under load—this OEM-quality replacement keeps your power transfer smooth and reliable through thousands of shifts. If you're...WIN67562- SKU:
- WIN67562
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MFG Part #:
- 67562
$4.99 -
Winters Filler Panel Bellhousing Steel Cadmium WIN64334
WINTERS
$12.99A properly sealed bellhousing is critical to maintaining drivetrain integrity during high-rpm operation and aggressive shifting. The Winters Filler Panel Bellhousing eliminates gaps that can...WIN64334- SKU:
- WIN64334
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MFG Part #:
- 64334
$12.99 -
Winters Falcon Steel Clutch Gear for Falcon Transmissions WIN61735
WINTERS
$259.99The Winters Falcon Steel Clutch Gear WIN61735 is a critical wear component in any Falcon Transmission-equipped race car. Over time, clutch gears experience degradation from repeated engagement cycles...WIN61735- SKU:
- WIN61735
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- MFG Part #:
- 61735
$259.99 -
Winters Aluminum Raptor Late Model Transmission Manual 2 Forward Speeds Reverse 10 Spline Input 27 Spline Output Aluminum Case Natural WIN60200
WINTERS
$2,078.99If you're running a late-model dirt track or asphalt racing program, you need a transmission that can handle repeated high-torque shifts without adding unnecessary weight to your chassis. The Winters...WIN60200- SKU:
- WIN60200
- Availability:
- Ships Same Business Day
- Weight:
- 41.10 LBS
- MFG Part #:
- 60200
$2,078.99 -
Winters 37in 31 Spline Gun Drilled Steel Axle Shaft 5067G-37
WINTERS
$182.99If you're building or maintaining a high-performance race car, axle shaft integrity directly impacts your ability to put power to the pavement reliably. The Winters 37-inch gun-drilled axle shaft...WIN5067G-37- SKU:
- WIN5067G-37
- Availability:
- Ships Same Business Day
- Weight:
- 8.86 LBS
- MFG Part #:
- 5067G-37
$182.99 -
Winters 36.5in Gun-Drilled Steel Axle 31 Spline Carrier 24 Spline Drive Flange WIN5067G-36.5
WINTERS
$182.99The Winters 36.5-inch gun-drilled axle delivers the strength you need for competitive racing while shedding unnecessary weight through precision drilling. The 31-spline carrier handles aggressive...WIN5067G-36.5- SKU:
- WIN5067G-36.5
- Availability:
- Ships Same Business Day
- Weight:
- 8.69 LBS
- MFG Part #:
- 5067G-36.5
$182.99Qty in Cart: 0Quantity:Price:$182.99Subtotal: -
Winters 36in 31 Spline Gun Drilled Steel Axle Shaft 5067G-36
WINTERS
$182.99When you're running high-horsepower applications, your axle shaft needs to handle serious loads without compromise. The Winters 36-inch 31 Spline Gun Drilled Steel Axle Shaft delivers the strength...WIN5067G-36- SKU:
- WIN5067G-36
- Availability:
- Ships Same Business Day
- Weight:
- 8.69 LBS
- MFG Part #:
- 5067G-36
$182.99Qty in Cart: 0Quantity:Price:$182.99Subtotal: -
Winters 33in Axle 31 Spline Gun Drilled Steel 5067G-33
WINTERS
$182.99If you're building a high-performance race car, your axle shafts need to handle the torque and abuse of competition without flex or failure. The Winters 33-inch axle delivers the strength and...WIN5067G-33- SKU:
- WIN5067G-33
- Availability:
- Ships Same Business Day
- Weight:
- 8.00 LBS
- MFG Part #:
- 5067G-33
$182.99 -
Winters 32in 31 Spline Gun Drilled Steel Axle Shaft 5067G-32
WINTERS
$182.99The Winters 32-inch gun-drilled axle shaft is engineered for racers who demand lightweight strength without sacrificing durability. By reducing rotational mass through strategic drilling, this shaft...WIN5067G-32- SKU:
- WIN5067G-32
- Availability:
- Ships Same Business Day
- Weight:
- 7.68 LBS
- MFG Part #:
- 5067G-32
$182.99Qty in Cart: 0Quantity:Price:$182.99Subtotal: -
Winters 25.5in 31 Spline Gun Drilled Steel Axle WIN5067G-25.500
WINTERS
$182.99When every tenth of a second counts on the track, your drivetrain needs to be bulletproof. The Winters 25.5-inch gun-drilled steel axle delivers race-proven durability without the weight penalty—the...WIN5067G-25.500- SKU:
- WIN5067G-25.500
- Availability:
- Ships Same Business Day
- Weight:
- 6.55 LBS
- MFG Part #:
- 5067G-25.500
$182.99 -
Winters Solid Axle 36in 31 Spline Carrier 24 Spline Drive Flange Steel Natural WIN5067-36
WINTERS
$131.99If you're building a race car that demands reliability under extreme torque loads, a precision axle shaft is non-negotiable. The Winters 36-inch solid axle delivers the strength and spline engagement...WIN5067-36- SKU:
- WIN5067-36
- Availability:
- Ships Same Business Day
- Weight:
- 12.41 LBS
- MFG Part #:
- 5067-36
$131.99Qty in Cart: 0Quantity:Price:$131.99Subtotal: -
Winters Aluminum Quick Change Yoke 1-3/8 in 32 Spline Dana 1310 Series Joint Stainless Sleeve 5038AS-32
WINTERS
$206.99If you're running a quick-change rear end and need a yoke that won't compromise your drivetrain reliability, this Winters aluminum yoke with stainless steel sleeve is built for the demands of...WIN5038AS-32- SKU:
- WIN5038AS-32
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MFG Part #:
- 5038AS-32
$206.99 -
Winters thrust block steel ring gear adjuster WIN5010
WINTERS
$22.99Proper thrust block geometry is critical for maintaining consistent gear mesh and ring gear position under racing loads. The Winters WIN5010 thrust block steel ring gear adjuster ensures your...WIN5010- SKU:
- WIN5010
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 5010
$22.99 -
Winters Quick Change Gear Set 4400 Series 6 Spline 4.11 4.59 3.68 4.88 5.45 4.37 Steel WIN4403B
WINTERS
$91.99Track performance demands precision gear selection, and the Winters 4400 Series Quick Change Gear Set delivers exactly that with two distinct ratio combinations in a single package. Whether you're...WIN4403B- SKU:
- WIN4403B
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- MFG Part #:
- 4403B
$91.99 -
Winters Quick Change Gear Set 4400 Series 6 Spline 4.11 4.47 3.78 4.88 5.30 4.49 Steel WIN4403
WINTERS
$91.99If you're running a quick-change rear end in bracket racing, drag racing, or circle track competition, swapping gear ratios between rounds is non-negotiable. The Winters 4400 Series Quick Change Gear...WIN4403- SKU:
- WIN4403
- Availability:
- Ships Same Business Day
- Weight:
- 3.67 LBS
- MFG Part #:
- 4403
$91.99
