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 Quick Change Jack Post Steel ALL68346
ALLSTAR PERFORMANCE
$15.99Quick pit stops demand equipment you can trust without hesitation. This Allstar Performance jack post delivers the durability and reliability required for competitive racing and serious track work, enabling fast, repeatable rear-end changes when seconds...ALL68346- SKU:
- ALL68346
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
$15.99 -
Allstar Performance Bert Gen II Shifter ALL54127
ALLSTAR PERFORMANCE
$89.99Precision shifter engagement directly impacts lap times and shift consistency under high-load racing conditions. The Allstar Performance Bert Gen II Shifter delivers the mechanical reliability and positive gate feel that separates competitive racing...ALL54127- SKU:
- ALL54127
- Availability:
- Ships Same Business Day
- Weight:
- 1.66 LBS
$89.99 -
Allstar Performance Flexplate 168T STD LS ALL26845
ALLSTAR PERFORMANCE
$87.99A flexplate is the critical interface between your LS engine and transmission—get it wrong, and you're looking at catastrophic drivetrain failure. The Allstar Performance 168T flexplate delivers the precision engineering and internal balance needed to...ALL26845- SKU:
- ALL26845
- Availability:
- Ships Same Business Day
- Weight:
- 6.35 LBS
$87.99 -
Allstar Performance Flexplate 168T SFI LS ALL26840
ALLSTAR PERFORMANCE
$92.99A flexplate is critical to your LS engine's reliability, and choosing the right one directly impacts your ignition timing, engine balance, and transmission engagement. The Allstar Performance 168T SFI flexplate is engineered to OEM specifications while...ALL26840- SKU:
- ALL26840
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
$92.99 -
Spindle Snout 5x5 - 2-Inch Pin, 6-7/8 Inch Length for Howe, Port City, Coleman, Vogel Hubs
J J MOTORSPORTS
$49.95If you're running a 5x5 wheel bolt pattern with Howe, Port City, Coleman, or Vogel hubs, a precision spindle snout is non-negotiable for safe, repeatable axle geometry. This spindle snout delivers the exact fitment and durability required for high-speed...RCSE-0013- SKU:
- RCSE-0013
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- Made In:
- Michigan, USA
- Type:
- Spindle Snout
- Pin Size:
- 2"
- Length:
- 6 - 7/8"
$49.95 -
Master Overhaul Kit GM 8.5 Rear YKNYKGM8.5
YUKON GEAR AND AXLE
$259.89A worn differential is a ticking time bomb on the track or trail—inadequate bearings and seals lead to catastrophic failure when you need reliability most. This Master Overhaul Kit gives you everything needed for a complete rebuild of your GM 8.5 rear...YKNYKGM8.5- SKU:
- YKNYKGM8.5
- Availability:
- Ships Same Business Day
- Weight:
- 6.23 LBS
- MFG Part #:
- YK GM8.5
$259.89 -
Master Overhaul Kit GM 12 Bolt Car YKNYKGM12P
YUKON GEAR AND AXLE
$310.89A worn differential is the silent killer of rear-end performance—it compromises handling, increases wear on drivetrain components, and can strand you mid-race. This master overhaul kit gives you everything needed to restore your GM 12-bolt to factory...YKNYKGM12P- SKU:
- YKNYKGM12P
- Availability:
- Ships Same Business Day
- Weight:
- 6.90 LBS
- MFG Part #:
- YK GM12P
$310.89 -
Winters Gear Cover Bearing Steel Ball Bearing for Billet and Sprint Covers WIN8659
WINTERS
$51.99Winters Quick Change gear covers demand precision components to maintain reliability under extreme racing conditions. This steel ball bearing is engineered to eliminate play and ensure consistent operation, keeping your drivetrain responsive lap after...WIN8659- SKU:
- WIN8659
- Availability:
- Ships Same Business Day
- Weight:
- 1.17 LBS
- MFG Part #:
- 8659
$51.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8558
WINTERS
$110.99Quick ratio changes are essential for competitive racing, and the Winters 8500 Series delivers two proven gear ratios in one efficient package. With 4.12 and 4.86 options, you can dial in the perfect setup for track conditions without swapping entire...WIN8558- SKU:
- WIN8558
- Availability:
- Ships Same Business Day
- Weight:
- 7.11 LBS
- MFG Part #:
- 8558
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 7.73 2.20 4.86 9.11 2.59 Steel WIN8557
WINTERS
$110.99If you're running a dedicated drag strip or road racing program, gear ratio selection directly impacts your launch, acceleration, and top-end performance. The Winters 8500 Series Quick Change system eliminates the need for complete rear-end teardowns...WIN8557- SKU:
- WIN8557
- Availability:
- Ships Same Business Day
- Weight:
- 7.06 LBS
- MFG Part #:
- 8557
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 7.51 2.26 4.86 8.86 2.67 Steel WIN8556
WINTERS
$110.99If you're serious about drag racing or bracket competition, your gear selection directly impacts your 60-foot times and overall ET. The Winters 8500 Series Quick Change Gear Set gives you multiple ratio options in a single purchase, letting you dial in...WIN8556- SKU:
- WIN8556
- Availability:
- Ships Same Business Day
- Weight:
- 6.89 LBS
- MFG Part #:
- 8556
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 7.47 2.27 4.86 8.80 2.68 Steel WIN8555
WINTERS
$110.99When track conditions shift or you're chasing lap time across different racing series, a single gear ratio leaves performance on the table. The Winters 8500 Series Quick Change Gear Set delivers two proven ratios—4.12 and 4.86—that bolt into your...WIN8555- SKU:
- WIN8555
- Availability:
- Ships Same Business Day
- Weight:
- 6.94 LBS
- MFG Part #:
- 8555
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8554
WINTERS
$110.99Quick ratio changes are critical when you're chasing lap time improvements or adapting to variable track conditions—this Winters gear set eliminates downtime between setup adjustments. The 4.12 and 4.86 ratios give you the flexibility to optimize...WIN8554- SKU:
- WIN8554
- Availability:
- Ships Same Business Day
- Weight:
- 6.99 LBS
- MFG Part #:
- 8554
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 7.27 2.34 4.86 8.57 2.75 Steel WIN8551
WINTERS
$110.99If you're running a Winters 8500 Series quick change rear end, having multiple gear ratio sets on hand is essential for maximizing performance across different track conditions and racing formats. This gear set gives you two proven ratios—4.12 and 4...WIN8551- SKU:
- WIN8551
- Availability:
- Ships Same Business Day
- Weight:
- 6.98 LBS
- MFG Part #:
- 8551
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 7.21 2.35 4.86 8.50 2.78 WIN8550
WINTERS
$110.99When track conditions or course layouts demand mid-event adjustments, swapping gear ratios shouldn't cost you time or reliability. The Winters Quick Change Gear Set 8500 Series eliminates guesswork by delivering multiple proven ratios in a single,...WIN8550- SKU:
- WIN8550
- Availability:
- Ships Same Business Day
- Weight:
- 6.98 LBS
- MFG Part #:
- 8550
$110.99 -
Winters Quick Change Gear Set 10 Spline 4.12 4.86 Steel WIN8543
WINTERS
$110.99If you're running a Winters 8500 Series quick change rear end, swapping gear ratios between events is critical to optimizing performance across different tracks and conditions. This steel gear set gives you two proven ratios in one purchase—4.12 for...WIN8543- SKU:
- WIN8543
- Availability:
- Ships Same Business Day
- Weight:
- 6.67 LBS
- MFG Part #:
- 8543
$110.99Qty in Cart: 0Quantity:Price:$110.99Subtotal: -
Winters Quick Change Gear Set 41 10 Spline 4.12 6.81 2.50 4.86 8.00 2.95 8541
WINTERS
$110.99Track conditions change, and your gear ratios should too. The Winters Quick Change Gear Set 41 lets you swap between a 4.12 and 4.86 ratio without breaking down your entire differential—critical for racers who need to dial in performance between sessions...WIN8541- SKU:
- WIN8541
- Availability:
- Ships Same Business Day
- Weight:
- 6.77 LBS
- MFG Part #:
- 8541
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 6.72 2.53 4.86 7.93 2.98 Steel WIN8540
WINTERS
$110.99If you're running a Winters 8500 Series quick change rear end, having multiple gear sets on hand means you can optimize your ratios for different track conditions without swapping hardware between races. The 10 spline design locks power down efficiently,...WIN8540- SKU:
- WIN8540
- Availability:
- Ships Same Business Day
- Weight:
- 6.85 LBS
- MFG Part #:
- 8540
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8539
WINTERS
$110.99If you're running a quick change rear end, swapping gear ratios between rounds is non-negotiable for competitive advantage. The Winters 8500 Series gives you two proven ratios—4.12 and 4.86—in a single, easy-swap package, letting you dial in the right...WIN8539- SKU:
- WIN8539
- Availability:
- Ships Same Business Day
- Weight:
- 6.84 LBS
- MFG Part #:
- 8539
$110.99 -
Winters Quick Change Gear Set 8500 Series 10 Spline 4.12 4.86 Steel WIN8537
WINTERS
$110.99When you're chasing lap times at the track, your rear gear ratio is the difference between optimal acceleration and leaving performance on the table. The Winters 8500 Series Quick Change Gear Set gives you the flexibility to dial in your setup for any...WIN8537- SKU:
- WIN8537
- Availability:
- Ships Same Business Day
- Weight:
- 6.66 LBS
- MFG Part #:
- 8537
$110.99
