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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Allstar Performance Spool 9in Ford 31 Spline ALL68064
ALLSTAR PERFORMANCE
$159.99A spool eliminates differential action, locking both rear wheels together for maximum traction during hard acceleration—essential for drag racing, circle track, and any application where consistent power delivery matters. If you're building a high-output...ALL68064- SKU:
- ALL68064
- Availability:
- Ships Same Business Day
- Weight:
- 9.25 LBS
- MFG Part #:
- ALL68064
$159.99 -
Allstar Performance Axle 31 Spl 32.5 Solid ALL66326
ALLSTAR PERFORMANCE
$149.99A solid axle shaft is fundamental to any rear-end assembly, and this Allstar Performance unit delivers the strength and reliability that racers and build enthusiasts demand. Built from quality steel with a 31-spline carrier interface, it's engineered for...ALL66326- SKU:
- ALL66326
- Availability:
- Ships Same Business Day
- Weight:
- 10.89 LBS
- MFG Part #:
- ALL66326
$149.99 -
Allstar Performance Axle 31 Spl 32.0 Solid ALL66321
ALLSTAR PERFORMANCE
$149.99A solid axle is fundamental to any rear-end build, and choosing the right shaft ensures reliability under load and consistent power delivery to the wheels. Allstar Performance's 31-spline solid axles deliver the strength and precision expected in circle...ALL66321- SKU:
- ALL66321
- Availability:
- Ships Same Business Day
- Weight:
- 10.68 LBS
- MFG Part #:
- ALL66321
$149.99 -
Allstar Performance 2 Lever Shifter w/ Lock Black ALL54125
ALLSTAR PERFORMANCE
$99.99A reliable shifter is foundational to consistent lap times and smooth gear transitions, whether you're on the track or the street. The Allstar Performance 2 Lever Shifter delivers precision mechanical engagement with a positive lockout mechanism that...ALL54125- SKU:
- ALL54125
- Availability:
- Ships Same Business Day
- Weight:
- 2.96 LBS
- MFG Part #:
- ALL54125
$99.99 -
Allstar Performance Clutch Discs for Bert 6 Pack ALL26950
ALLSTAR PERFORMANCE
$99.99Keep your Bert transmission performing at its absolute best with the Allstar Performance Clutch Discs (ALL26950) — engineered specifically for racers who demand reliability and consistency every time they hit the track. Sold in a convenient 6-pack,...ALL26950- SKU:
- ALL26950
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- MFG Part #:
- ALL26950
$99.99 -
Allstar Performance Flexplate 153T SFI Internal Balance ALL26830
ALLSTAR PERFORMANCE
$65.99When it comes to building a reliable, race-ready Small Block Chevy, every component matters — and the Allstar Performance ALL26830 Flexplate delivers the strength and precision you need to keep your drivetrain running smooth and safe. Built to SFI 29.1...ALL26830- SKU:
- ALL26830
- Availability:
- Ships Same Business Day
- Weight:
- 5.26 LBS
- MFG Part #:
- ALL26830
$65.99 -
Allstar Performance Flexplate 168T SFI Internal Balance ALL26800
ALLSTAR PERFORMANCE
$89.99When it comes to high-performance builds, you can't afford to cut corners on critical drivetrain components. The Allstar Performance ALL26800 Flexplate delivers rock-solid reliability and SFI-certified safety, making it a go-to choice for racers and...ALL26800- SKU:
- ALL26800
- Availability:
- Ships Same Business Day
- Weight:
- 6.49 LBS
- MFG Part #:
- ALL26800
$89.99 -
Allstar Performance Long Pilot Bushing ALL26112
ALLSTAR PERFORMANCE
$22.99When precision and durability matter most, the Allstar Performance Long Pilot Bushing ALL26112 delivers exactly what your GM build demands. The extra-long bronze design ensures a rock-solid connection between your crankshaft and transmission input shaft,...ALL26112- SKU:
- ALL26112
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- MFG Part #:
- ALL26112
$22.99Qty in Cart: 0Quantity:Price:$22.99Subtotal: -
Allstar Performance Tube Clamp 1-1/2in I.D. x 2in Wide ALL14483
ALLSTAR PERFORMANCE
$13.99When it comes to securing your roll cage or chassis tubing with confidence, the Allstar Performance ALL14483 Tube Clamp delivers rock-solid holding power you can count on. Built from durable steel with a clean natural finish, this 2-bolt clamp is a go-to...ALL14483- SKU:
- ALL14483
- Availability:
- Ships Same Business Day
- Weight:
- 1.02 LBS
- MFG Part #:
- ALL14483
$13.99 -
Quick Change Rear End L/M Longhorn 4.86
WINTERS
$3,241.99A quick-change rear end is essential for racers who demand flexibility without sacrificing performance. The L/M Longhorn configuration with 4.86 gearing delivers aggressive acceleration and optimized power delivery for track applications where gear ratio...WIN5270PM-LNH- SKU:
- WIN5270PM-LNH
- Weight:
- 100.00 LBS
$3,241.99 -
Quick Change Rear End L/M Longhorn 4.12
WINTERS
$3,280.99A quick-change rear end is essential for racers who demand flexibility between track configurations and race formats. The L/M Longhorn 4.12 gear ratio delivers aggressive acceleration and responsive handling characteristics ideal for shorter tracks and...WIN5270PM-LNH-412- SKU:
- WIN5270PM-LNH-412
- Weight:
- 100.00 LBS
$3,280.99Qty in Cart: 0Quantity:Price:$3,280.99Subtotal: -
Quick Change Rear End Less Tube 8-Rib Bell
WINTERS
$2,867.99A quick change rear end eliminates the need for lengthy gear ratio changes between races or test sessions, letting you optimize your setup without dropping the entire assembly. The 8-rib bell interface ensures maximum torque transfer and reliable...WIN5270PM-LT- SKU:
- WIN5270PM-LT
- Weight:
- 91.33 LBS
$2,867.99 -
Quick Change Rear End L/M Rocket XR1 4.86
WINTERS
$3,241.99Quick-change rear ends are essential for racers who demand efficiency in the pits—swap gear ratios in minutes without breaking down the entire assembly. The Rocket XR1 4.86 delivers the low-end torque multiplication you need for acceleration-focused...WIN5270PM-RKT- SKU:
- WIN5270PM-RKT
- Weight:
- 100.00 LBS
$3,241.99 -
Quick Change Rear End L/M Rocket XR1 4.12
WINTERS
$3,280.99Quick-change rear ends are essential for serious bracket racers and track builders who demand rapid gear ratio adjustments between rounds without breaking down the entire differential. The Rocket XR1 4.12 delivers proven durability and straightforward...WIN5270PM-RKT-412- SKU:
- WIN5270PM-RKT-412
- Weight:
- 100.00 LBS
$3,280.99Qty in Cart: 0Quantity:Price:$3,280.99Subtotal: -
Ford 9 Inch Third Member Assembly, Full Spool, 31-Spline
J J MOTORSPORTS
$1,025.95If you're building a dedicated drag, circle track, or street strip machine, a full-spool third member delivers the straight-line performance your setup demands. The Ford 9-inch with a locked spool eliminates wheel hop and power loss by ensuring both rear...234-9091- SKU:
- 234-9091
- Availability:
- 1-2 Week Lead Time for Build
- Weight:
- 50.00 LBS
$1,025.95 -
Racing Clutch Hydraulic Throwout Bearing Chevy Release Bearing Dirt Street Stock
J J MOTORSPORTS
$124.95If you're running a race program with a modern multi-disc clutch and tired of mechanical linkage maintenance eating into your prep time, a hydraulic throwout bearing cuts pedal effort dramatically while eliminating constant adjustments. This CNC-machined...E563917E- SKU:
- E563917E
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
$124.95Qty in Cart: 0Quantity:Price:$124.95Subtotal: -
Brinn BR2 Short Aluminum Transmission 19-inch 70002
BRINN TRANSMISSION
$2,604.99For drag racing, circle track, and high-performance street applications, transmission weight and packaging are critical to vehicle balance and acceleration. The Brinn BR2 combines a featherweight 50-pound aluminum case with proven mechanical design,...BRI70002- SKU:
- BRI70002
- Availability:
- Ships same business day
- Weight:
- 57.00 LBS
$2,604.99 -
Mini Spool - GM 8.5 10- Bolt 30-Spline YP MINSGM8.5-30
YUKON GEAR AND AXLE
$209.89A mini spool transforms your GM 10-bolt into a true performance differential by locking both wheels together for maximum traction off the line and through corners. This steel construction delivers the durability you need for sustained track sessions or...YKNYPMINSGM8.5-30- SKU:
- YKNYPMINSGM8.5-30
- Availability:
- Ships Same Business Day
- Weight:
- 5.69 LBS
$209.89 -
Crush Sleeve Eliminator Kit Ford 9in 35-spl Pin SK CSF9-BIGPIN
YUKON GEAR AND AXLE
$147.89Crush sleeve failures are a common failure point in high-performance Ford 9-inch differentials, leading to catastrophic pinion bearing collapse and drivetrain damage. This eliminator kit removes that weak point entirely, replacing the crush sleeve design...YKNSKCSF9-BIGPIN- SKU:
- YKNSKCSF9-BIGPIN
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
$147.89 -
Winters Friction Disc 7-Pack 3.75" for Falcon Transmission 61853RS-7E
WINTERS
$72.99Winters Falcon transmissions demand friction discs that can handle repeated engagements without glazing or slippage—and this seven-pack delivers exactly that. Whether you're running bracket racing, street-strip duty, or high-horsepower applications, worn...WIN61853RS-7E- SKU:
- WIN61853RS-7E
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$72.99
