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 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 -
Winters Aluminum Spool Carrier Shim 2.031 in ID Steel Set of 12 WIN5295
WINTERS
$9.49Differential shimming is critical to eliminating backlash and maintaining consistent lock-up in high-performance spools—improper shim selection leads to play, noise, and premature wear. This OEM-quality steel shim set is engineered specifically for...WIN5295- SKU:
- WIN5295
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MFG Part #:
- 5295
$9.49 -
Winters Aluminum Spool Setup Checking Bearing 2.031 in ID Steel WIN5294
WINTERS
$35.99Setting up a Winters aluminum spool requires precision—and this checking bearing eliminates guesswork during the critical shim adjustment phase. By using this dedicated setup tool, you can dial in your spool's preload and endplay before pressing on final...WIN5294- SKU:
- WIN5294
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MFG Part #:
- 5294
$35.99 -
Winters Aluminum Ford 9" Housing Push-In Side Tube Oversized Inspection Plug WIN5243
WINTERS
$364.99When you're pushing your Ford 9" rear end to the limit on the track, thermal management and quick maintenance access become critical to reliability. The Winters Aluminum Housing delivers both—its lightweight construction reduces unsprung weight while the...WIN5243- SKU:
- WIN5243
- Availability:
- Ships Same Business Day
- Weight:
- 18.70 LBS
- MFG Part #:
- 5243
$364.99 -
Winters Billet Aluminum Locker 2.33 in Side Gear Spline Quick Change WIN5114-01
WINTERS
$757.99If you're running a Winters Quick Change rear end, the differential carrier is your foundation for consistent traction and reliability under load. This billet aluminum locker delivers spool-type grip on straightaways while automatically unlocking in...WIN5114-01- SKU:
- WIN5114-01
- Availability:
- Ships Same Business Day
- Weight:
- 13.44 LBS
- MFG Part #:
- 5114-01
$757.99 -
Winters 40in 31 Spline Gun Drilled Steel Axle Shaft 5067G-40
WINTERS
$223.99The Winters 40-inch 31 Spline Gun Drilled Steel Axle Shaft is purpose-built for racers who demand maximum strength with minimal weight penalty. Gun-drilled construction removes material strategically while maintaining rigidity under extreme torque loads,...WIN5067G-40- SKU:
- WIN5067G-40
- Availability:
- Ships Same Business Day
- Weight:
- 9.46 LBS
- MFG Part #:
- 5067G-40
$223.99 -
Winters 38.5" Gun-Drilled Steel Axle 31 Spline Carrier 24 Spline Drive Flange WIN5067G-38.5
WINTERS
$182.99If you're running a high-performance race car, your axles need to handle serious power without adding unnecessary weight. The Winters 38.5" Gun-Drilled Steel Axle delivers the strength and precision required for consistent track performance, with...WIN5067G-38.5- SKU:
- WIN5067G-38.5
- Availability:
- Ships Same Business Day
- Weight:
- 9.50 LBS
- MFG Part #:
- 5067G-38.5
$182.99 -
Winters 38in Gun-Drilled Steel Axle 31 Spline Carrier 24 Spline Drive Flange WIN5067G-38
WINTERS
$182.99When you're pushing a race car to its limits, your axle shafts need to handle extreme loads without flex or failure. The Winters 38-inch gun-drilled axle combines weight savings with uncompromised strength through precision engineering—31-spline carrier...WIN5067G-38- SKU:
- WIN5067G-38
- Availability:
- Ships Same Business Day
- Weight:
- 9.24 LBS
- MFG Part #:
- 5067G-38
$182.99 -
Winters 35.5in 31 Spline Gun Drilled Steel Axle WIN5067G-35.5
WINTERS
$182.99If you're running a competitive race car, your axle is handling massive torque loads and needs to deliver it cleanly to the wheels without flex or failure. The Winters 35.5in gun-drilled steel axle cuts unnecessary weight through precision drilling while...WIN5067G-35.5- SKU:
- WIN5067G-35.5
- Availability:
- Ships Same Business Day
- Weight:
- 8.45 LBS
- MFG Part #:
- 5067G-35.5
$182.99 -
Winters 35in 31 Spline Gun Drilled Steel Axle 5067G-35
WINTERS
$182.99When you're pushing your race car to the limit, your drivetrain components need to match that intensity. The Winters 35-inch gun-drilled steel axle delivers the strength and precision required for competitive racing without adding unnecessary weight...WIN5067G-35- SKU:
- WIN5067G-35
- Availability:
- Ships Same Business Day
- Weight:
- 8.53 LBS
- MFG Part #:
- 5067G-35
$182.99Qty in Cart: 0Quantity:Price:$182.99Subtotal: -
Winters 34.5" Gun-Drilled Steel Axle 31 Spline Carrier 24 Spline Drive Flange WIN5067G-34.5
WINTERS
$182.99When you're pushing limits on the track, your axles need to handle extreme torque loads without adding unnecessary weight. The Winters 34.5" gun-drilled steel axle delivers the strength required for serious racing while the drilled design shaves pounds...WIN5067G-34.5- SKU:
- WIN5067G-34.5
- Availability:
- Ships Same Business Day
- Weight:
- 8.38 LBS
- MFG Part #:
- 5067G-34.5
$182.99Qty in Cart: 0Quantity:Price:$182.99Subtotal: -
Winters 34in 31 Spline Gun Drilled Steel Axle 5067G-34
WINTERS
$182.99If you're building a race car that demands reliability under extreme conditions, axle shaft quality directly impacts your power delivery and safety. The Winters 34-inch gun-drilled steel axle combines high-strength construction with weight...WIN5067G-34- SKU:
- WIN5067G-34
- Availability:
- Ships Same Business Day
- Weight:
- 8.24 LBS
- MFG Part #:
- 5067G-34
$182.99 -
Winters 33.5in 31 Spline Gun Drilled Steel Axle Shaft 5067G-33.5
WINTERS
$182.99A reliable axle shaft is fundamental to consistent power delivery and handling in competitive racing. The Winters 33.5-inch gun-drilled steel axle combines the strength needed for high-torque applications with weight savings that improve acceleration and...WIN5067G-33.5- SKU:
- WIN5067G-33.5
- Availability:
- Ships Same Business Day
- Weight:
- 8.10 LBS
- MFG Part #:
- 5067G-33.5
$182.99 -
Winters 32.5in 31 Spline Gun Drilled Steel Axle Shaft 5067G-32.5
WINTERS
$173.99A quality axle shaft is fundamental to reliable power transfer in high-performance racing applications. The Winters 32.5-inch gun-drilled design delivers the strength you need for consistent acceleration while shedding unnecessary weight—a critical...WIN5067G-32.5- SKU:
- WIN5067G-32.5
- Availability:
- Ships Same Business Day
- Weight:
- 7.93 LBS
- MFG Part #:
- 5067G-32.5
$173.99 -
Winters 31.5in Steel Gun-Drilled Axle 31 Spline 24 Spline Drive Flange WIN5067G-31.5
WINTERS
$192.99If you're serious about race car performance, your axle shaft is where power meets the pavement. The Winters 31.5in Steel Gun-Drilled Axle delivers the durability and precision you need for consistent track performance, with a proven design that handles...WIN5067G-31.5- SKU:
- WIN5067G-31.5
- Availability:
- Ships Same Business Day
- Weight:
- 7.62 LBS
- MFG Part #:
- 5067G-31.5
$192.99 -
Winters 31in Gun Drilled Steel Axle 31 Spline Carrier 24 Spline Drive Flange WIN5067G-31
WINTERS
$182.99When you're pushing your race car to the limit, your drivetrain needs to handle extreme torque loads without giving up weight. Winters' 31-inch gun-drilled steel axle delivers the strength and precision required for competitive racing, with a 31-spline...WIN5067G-31- SKU:
- WIN5067G-31
- Availability:
- Ships Same Business Day
- Weight:
- 7.65 LBS
- MFG Part #:
- 5067G-31
$182.99 -
Winters 30.5in Gun Drilled Steel Axle 31 Spline Carrier 24 Spline Drive Flange WIN5067G-30.5
WINTERS
$182.99A properly engineered axle shaft is critical to transferring power reliably under extreme racing conditions. The Winters 30.5-inch gun drilled axle reduces rotational mass while maintaining the structural integrity required for high-load applications,...WIN5067G-30.5- SKU:
- WIN5067G-30.5
- Availability:
- Ships Same Business Day
- Weight:
- 7.40 LBS
- MFG Part #:
- 5067G-30.5
$182.99Qty in Cart: 0Quantity:Price:$182.99Subtotal: -
Winters 30in 31 Spline Gun Drilled Steel Axle 24 Spline Drive Flange WIN5067G-30
WINTERS
$182.99If you're running a quick-change or Ford 9" rear end setup, axle shaft durability directly impacts your consistency on the track. The Winters 30-inch gun-drilled axle reduces unsprung weight while maintaining the strength needed for aggressive launches...WIN5067G-30- SKU:
- WIN5067G-30
- Availability:
- Ships Same Business Day
- Weight:
- 7.30 LBS
- MFG Part #:
- 5067G-30
$182.99 -
Winters 29.5in 31 Spline Gun-Drilled Steel Axle WIN5067G-29.5
WINTERS
$182.99When every tenth of a second counts on the track, your axles need to deliver both strength and minimal rotational mass. The Winters 29.5-inch gun-drilled steel axle eliminates unnecessary weight through precision drilling while maintaining the durability...WIN5067G-29.5- SKU:
- WIN5067G-29.5
- Availability:
- Ships Same Business Day
- Weight:
- 7.42 LBS
- MFG Part #:
- 5067G-29.5
$182.99 -
Winters 29in Steel Gun Drilled Axle 31 Spline Carrier 24 Spline Drive Flange WIN5067G-29
WINTERS
$173.99If you're running a quick-change or Ford 9" rear end in competitive racing, axle durability directly impacts your consistency on the track. The Winters 29-inch gun-drilled axle delivers the weight savings you need for better acceleration and handling...WIN5067G-29- SKU:
- WIN5067G-29
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
- MFG Part #:
- 5067G-29
$173.99
