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 Ring And Pinion 583 Ratio Lightened F9583LW
PEM
$230.99A 5.83 ratio ring and pinion gear set demands precision engineering—especially when you're running a Ford 9-inch and every tenth of a pound matters on the track. The PEM F9583LW delivers the gear ratio you need for aggressive acceleration while shedding...PEMF9583LW- SKU:
- PEMF9583LW
- Availability:
- Ships Same Business Day
- Weight:
- 21.00 LBS
$230.99 -
PEM New Center Section FS 7.00 Ratio 31 Spline L/W CSFS70031LW
PEM
$876.99A 7.00 ratio center section transforms your Ford 9-inch differential into a precision tool for high-RPM acceleration and track performance. Whether you're building a dedicated drag setup or maximizing mid-range punch on the strip, this PEM spool delivers...PEMCSFS70031LW- SKU:
- PEMCSFS70031LW
- Availability:
- Ships Same Business Day
- Weight:
- 75.00 LBS
$876.99 -
PEM New Center Section FS 6.83 Ratio 31 Spline L/W CSFS68331LW
PEM
$876.99If you're building a dedicated drag or road-race Ford 9-inch, the PEM center section delivers the gear ratio and lockup characteristics you need for consistent power delivery off the line. This 6.83 ratio spool is engineered for vehicles that demand...PEMCSFS68331LW- SKU:
- PEMCSFS68331LW
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
$876.99Qty in Cart: 0Quantity:Price:$876.99Subtotal: -
PEM New Center Section FS 6.66 Ratio 31 Spline L/W CSFS66631LW
PEM
$876.99If you're building a high-rpm Ford 9-inch rear end that demands immediate power delivery without hesitation, the PEM New Center Section FS 6.66 Ratio is engineered to eliminate wheel spin and keep both tires driving hard through the corner. The 6.66 gear...PEMCSFS66631LW- SKU:
- PEMCSFS66631LW
- Availability:
- Ships Same Business Day
- Weight:
- 75.00 LBS
$876.99 -
PEM New Center Section FS LW 650 Ratio 31 Spline CSFS65031LW
PEM
$768.95A 6.50 ratio differential is essential for high-RPM acceleration and consistent power delivery on the track or strip. The PEM center section delivers the mechanical lock and durability required for serious racing, eliminating wheel hop and ensuring both...PEMCSFS65031LW- SKU:
- PEMCSFS65031LW
- Availability:
- Ships Same Business Day
- Weight:
- 75.00 LBS
$768.95 -
PEM New Center Section FS LW 583 Ratio 31 Spline CSFS58331LW
PEM
$768.12A locked differential is essential for serious drag racing and off-road performance, and the PEM New Center Section FS LW delivers uncompromising power transfer without the complexity of electronic systems. The 5.83 ratio is engineered for aggressive...PEMCSFS58331LW- SKU:
- PEMCSFS58331LW
- Availability:
- Ships Same Business Day
- Weight:
- 75.00 LBS
$768.12 -
Carrier Shims 7.5 - 8.5 GM 10 Bolt Rearend SS10
MOTIVE GEAR
$21.99Proper carrier shim selection is critical for maintaining correct differential bearing preload and backlash, which directly impacts gear life and driveline reliability. Inadequate preload causes premature bearing wear and noise, while excessive preload...MOTSS10- SKU:
- MOTSS10
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
$21.99 -
BK FORD 8.8in 81-10 R8.8RMKT
MOTIVE GEAR
$140.99A Ford 8.8-inch differential rebuild requires precision components that work together seamlessly—this master installation kit includes everything you need to properly set bearing preload, backlash, and crush sleeve specifications without guesswork...MOTR8.8RMKT- SKU:
- MOTR8.8RMKT
- Availability:
- Ships Same Business Day
- Weight:
- 5.80 LBS
$140.99 -
Master Install Kit 8.5in w/Eaton or Auburn Unit R10REMKT
MOTIVE GEAR
$169.99Rebuilding or servicing a differential demands precision—and this master install kit eliminates guesswork by bundling every component you need to properly assemble an 8.5-inch GM 10-bolt differential. Whether you're refreshing worn bearings, installing a...MOTR10REMKT- SKU:
- MOTR10REMKT
- Availability:
- Ships Same Business Day
- Weight:
- 5.65 LBS
$169.99Qty in Cart: 0Quantity:Price:$169.99Subtotal: -
Shifter Boot Koolmat SFI Approved #07063
KOOL MAT
$133.99In high-performance racing environments, heat transfer from the engine bay and drivetrain can compromise safety and damage interior components. The Shifter Boot Koolmat SFI Approved provides certified thermal protection that keeps your shifter assembly...KOO07063- SKU:
- KOO07063
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
$133.99Qty in Cart: 0Quantity:Price:$133.99Subtotal: -
Rear Diff Fill Tank 12an w/Vented Cap KR9090-12V
KEVKO OIL PANS & COMPONENTS
$109.99Maintaining proper differential fluid levels is critical for gear longevity and consistent performance under load—but accessing your diff fill port shouldn't require dropping the entire rear end. This remote fill tank eliminates guesswork and keeps your...KEVKR9090-12V- SKU:
- KEVKR9090-12V
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
$109.99 -
Rear Diff Fill Tank 10an w/Vented Cap KR9090-10V
KEVKO OIL PANS & COMPONENTS
$109.99Keeping differential fluid at the correct level is critical to protecting your rear end under extreme load and heat. This vented fill tank eliminates guesswork during maintenance and track sessions, giving you reliable access to top off your diff without...KEVKR9090-10V- SKU:
- KEVKR9090-10V
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
$109.99 -
Joes Drive Flange 5 x 5 Steel 25045
JOES RACING PRODUCTS
$139.95A quality drive flange is the foundation of reliable wheel attachment—it directly impacts load transfer, runout concentricity, and overall drivetrain integrity. The Joe's Drive Flange 5x5 delivers precision engineering in a bolt-on package, designed for...JOE25045- SKU:
- JOE25045
- Availability:
- Ships Same Business Day
- Weight:
- 2.46 LBS
$139.95 -
Sleeve Bushing JER-0064
JERICO
$16.99The output shaft bushing is a critical wear component in high-performance Jerico transmissions, directly affecting shift quality and drivetrain longevity. A worn or damaged bushing introduces play in the output shaft, compromising precision shift feel...JER0064- SKU:
- JER0064
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
$16.99 -
Tube 3/8in Breather JER-0057
JERICO
$1.99Proper crankcase ventilation is essential for maintaining seal integrity and preventing pressure buildup in your Jerico transmission. This OEM-spec breather tube ensures your case breathes correctly under load, protecting internal components from...JER0057- SKU:
- JER0057
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
$1.99Qty in Cart: 0Quantity:Price:$1.99Subtotal: -
Fork Low / High JER-0046
JERICO
$84.99Precise gear selection is the foundation of consistent, repeatable shift performance—especially in high-stress racing applications. The Fork Low / High JER-0046 delivers the mechanical accuracy and durability required to handle repeated gear changes...JER0046- SKU:
- JER0046
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
$84.99 -
Fork Reverse JER-0045
JERICO
$74.99A quality reverse shift fork is critical for reliable gear engagement and smooth transmission operation under racing conditions. The JER-0045 is precision-engineered to withstand the demands of high-performance driving, ensuring consistent reverse...JER0045- SKU:
- JER0045
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$74.99 -
Shift Rail Reverse JER-0043
JERICO
$48.99Precise gear selection is fundamental to consistent racing performance, and your reverse engagement depends on a shift rail that won't flex or fail under load. The Shift Rail Reverse JER-0043 is engineered for Jerico transmissions, delivering the rigid,...JER0043- SKU:
- JER0043
- Availability:
- Ships Same Business Day
- Weight:
- 0.73 LBS
$48.99 -
Spacer Clutch Piston JER-0039
JERICO
$8.99Precision clutch engagement depends on proper piston spacing, and the Spacer Clutch Piston JER-0039 delivers the exact geometry your transmission demands. This steel washer maintains critical clearances between clutch components, preventing premature...JER0039- SKU:
- JER0039
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
$8.99 -
Fitting Bleed Screw JER-0036
JERICO
$13.99Brake system bleeding requires the right adapter to ensure a proper seal and efficient fluid evacuation. The JER-0036 fitting bleed screw bridges standard 3/8" NPT ports to 1/4" NPT bleeder screws, eliminating the need for custom fabrication or...JER0036- SKU:
- JER0036
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$13.99
