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 9in Gear Full Spool 3.70 Ratio New Center 31 CSFS37031
PEM
$718.99A full spool differential eliminates wheel slip and ensures both rear wheels receive equal power delivery—essential for consistent traction during hard acceleration and cornering. The PEM 9in Gear Full Spool with its proven 3.70 ratio strikes the balance...PEMCSFS37031- SKU:
- PEMCSFS37031
- Availability:
- Ships Same Business Day
- Weight:
- 74.00 LBS
$718.99 -
PEM Premium Quick Change Gears (15/27) 65054
PEM
$153.99Quick-change gear sets eliminate downtime between race sessions by allowing you to swap ratios in minutes rather than hours—critical when you're chasing optimal performance across multiple track configurations. The PEM Premium set gives you two proven...PEM65054- SKU:
- PEM65054
- Availability:
- Ships Same Business Day
- Weight:
- 5.10 LBS
$153.99 -
PEM Premium Quick Change Gears 65014A
PEM
$153.99Quick-change gear sets eliminate downtime between races by letting you swap ratios in minutes rather than hours. Whether you're fine-tuning for different track conditions or running multiple events, the PEM 65014A gives you the flexibility to optimize...PEM65014A- SKU:
- PEM65014A
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
$153.99 -
PEM Premium Quick Change Gears (22/30) 65010A
PEM
$153.99Quick-change gear sets are essential for racers who need multiple rear-end ratios without full differentials swaps—saving valuable pit time and setup flexibility. The PEM Premium 65010A delivers two distinct ratios in a single, robust package, letting...PEM65010A- SKU:
- PEM65010A
- Availability:
- Ships Same Business Day
- Weight:
- 5.10 LBS
$153.99 -
PEM 400 GM Slip Yoke 1310 5.50in 32 Spline 2-3-10431X
PEM
$99.99A quality slip yoke is critical to maintaining smooth power transfer and eliminating drivetrain noise in high-performance applications. This PEM 400 slip yoke is engineered for TH400 transmissions with the precise 32-spline configuration and 1310 U-joint...PEM2-3-10431X- SKU:
- PEM2-3-10431X
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
$99.99 -
Ford 8in Master Bearing Kit RA310RMK
MOTIVE GEAR
$145.99A worn or improperly set up Ford 8-inch differential will destroy performance and create costly failures—this master bearing kit gives you everything needed for a complete, factory-correct rebuild or upgrade. Whether you're refreshing a classic build or...MOTRA310RMK- SKU:
- MOTRA310RMK
- Availability:
- Ships Same Business Day
- Weight:
- 4.61 LBS
$145.99 -
GM 10 Bolt 8.6in Bearing Kit R10RLMK
MOTIVE GEAR
$148.99A quality differential installation requires precision-engineered bearings and properly matched components—this master kit eliminates guesswork by including everything you need for a complete, professional-grade rebuild. Whether you're refreshing worn...MOTR10RLMK- SKU:
- MOTR10RLMK
- Availability:
- Ships Same Business Day
- Weight:
- 6.04 LBS
$148.99 -
8.5 GM Master Bearing Kit R10REMK
MOTIVE GEAR
$118.99A properly installed differential is the foundation of reliable rear-end performance, and worn bearings or damaged crush sleeves will compromise handling and accelerate component wear. The 8.5 GM Master Bearing Kit R10REMK gives you everything needed for...MOTR10REMK- SKU:
- MOTR10REMK
- Availability:
- Ships Same Business Day
- Weight:
- 5.70 LBS
$118.99 -
Install Kit GM 8.5in Rearend Early GM8.5IK
MOTIVE GEAR
$61.99A complete differential installation kit is essential when rebuilding or servicing your GM 8.5-inch rearend—it ensures proper sealing, correct bearing preload, and reliable operation without leaks or premature wear. This kit consolidates all the...MOTGM8.5IK- SKU:
- MOTGM8.5IK
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
$61.99Qty in Cart: 0Quantity:Price:$61.99Subtotal: -
Install Kit Ford 9in Rearend F9IK
MOTIVE GEAR
$49.99A properly installed differential is the foundation of reliable rear-end performance, and this Ford 9-inch install kit eliminates guesswork by providing all critical components in one package. Whether you're assembling a fresh rearend or refreshing an...MOTF9IK- SKU:
- MOTF9IK
- Availability:
- Ships Same Business Day
- Weight:
- 1.66 LBS
$49.99 -
Install Kit Ford 8.8in Rearend F8.8IK
MOTIVE GEAR
$52.99A properly installed Ford 8.8 differential requires precision assembly with OEM-spec components—this kit gives you everything needed to do it right the first time. Whether you're rebuilding a stock unit or upgrading to a performance diff, having the...MOTF8.8IK- SKU:
- MOTF8.8IK
- Availability:
- Ships Same Business Day
- Weight:
- 2.08 LBS
$52.99 -
Moser Engineering GM 10 Bolt 7.5 C-Clip 28 Spline Axles 28-7/16in A102810
MOSER ENGINEERING
$335.00If you're running a GM 10-bolt rear end and pushing power through the drivetrain, OEM axles won't cut it. Moser Engineering's 28-spline C-clip axles are engineered for durability and designed to handle the demands of street and track applications without...MEIA102810- SKU:
- MEIA102810
- Availability:
- Ships Same Business Day
- Weight:
- 30.95 LBS
$335.00 -
Moser Engineering GM 10-Bolt C-Clip Axles 28-Spline 30-5/16 (pair) A102804
MOSER ENGINEERING
$335.00If you're upgrading your third-member or replacing worn axle shafts in your 1982-92 Camaro, Moser Engineering's GM 10-Bolt C-Clip Axles deliver the strength and reliability you need for both street and strip duty. Built from high-grade steel with...MEIA102804- SKU:
- MEIA102804
- Availability:
- Ships Same Business Day
- Weight:
- 33.00 LBS
$335.00 -
Moser Engineering C-Clip Axle Set GM 28spl 10 Bolt 30-1/16 Long C/T A102803CT
MOSER ENGINEERING
$335.00If you're building or restoring a classic GM A-Body and need reliable, OEM-spec axle shafts, Moser Engineering's C-Clip Axle Set delivers the strength and precision fit your 10-bolt housing demands. These steel shafts are engineered to handle both street...MEIA102803CT- SKU:
- MEIA102803CT
- Availability:
- Ships Same Business Day
- Weight:
- 32.00 LBS
$335.00 -
Moser Engineering GM 10 Bolt 7.5 C-Clip 26 Spline Axles 28-7/16in A102601CT-4750
MOSER ENGINEERING
$335.00If you're running a GM 10-bolt rearend, axle shaft integrity is non-negotiable. Moser Engineering's 26-spline axles deliver the strength and reliability you need for sustained high-performance driving, whether you're on the strip, road course, or pushing...MEIA102601CT-4750- SKU:
- MEIA102601CT-4750
- Availability:
- Ships Same Business Day
- Weight:
- 30.55 LBS
$335.00Qty in Cart: 0Quantity:Price:$335.00Subtotal: -
Longacre Shifter Knob Alum 3/8in-16 52-22601
LONGACRE
$40.99A quality shifter knob is often overlooked, but it's one of the few components you interact with on every gear change. The Longacre billet aluminum knob delivers a substantial, precision-machined feel that reduces fatigue during extended driving sessions...LON52-22601- SKU:
- LON52-22601
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
$40.99 -
Longacre Rear End Breather Kit 1-1/2in. Bar 52-22569
LONGACRE
$61.99Rear end breather systems prevent pressure buildup in your differential housing, which can force fluid past seals and cause leaks that compromise performance and longevity. The Longacre 52-22569 kit delivers a clean, effective solution with remote...LON52-22569- SKU:
- LON52-22569
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$61.99 -
Longacre Rear End Breather Kit 1.75in. Bar 52-22568
LONGACRE
$61.99Rear end breather kits prevent pressure buildup in your differential housing, which can compromise seal integrity and lead to fluid leakage under sustained racing conditions. The Longacre 52-22568 offers a clean, remote-mount solution that keeps your...LON52-22568- SKU:
- LON52-22568
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$61.99 -
Joes DIY SHIFTER LEVER KIT 17011
JOES RACING PRODUCTS
$54.95Building a custom shifter setup demands precision and reliability—the Joes DIY SHIFTER LEVER KIT 17011 gives you the flexibility to fabricate a shifter tailored to your specific cockpit layout and driving style. Cut-to-length aluminum construction means...JOE17011- SKU:
- JOE17011
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
$54.95 -
Joes 8in Shift Lever Offset 2in Left 17005
JOES RACING PRODUCTS
$67.95A properly positioned shift lever is critical for consistent gear engagement and driver comfort during high-demand racing and performance driving. Joe's offset shift levers are precision-engineered to optimize shifter geometry for manual transmissions,...JOE17005- SKU:
- JOE17005
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$67.95
