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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SCS Quick Change Gear Set 6 Spline 62
SCS GEARS
$148.99Quick Change Gear SetProfessionalSet 626 Spline4.11 Ratio 3.96 / 4.274.33 Ratio 4.17 / 4.50SteelEachSCS62- SKU:
- SCS62
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- MFG Part #:
- 62
$148.99 -
SCS Quick Change Gear Set 6 Spline 618
SCS GEARS
$148.99Quick Change Gear SetProfessionalSet 6186 Spline4.11 Ratio 2.42 / 6.994.33 Ratio 2.55 / 7.36SteelEachSCS618- SKU:
- SCS618
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- MFG Part #:
- 618
$148.99 -
SCS Quick Change Gear Set 6 Spline 617
SCS GEARS
$148.99Quick Change Gear SetProfessionalSet 6176 Spline4.11 Ratio 2.49 / 6.784.33 Ratio 2.62 / 7.14SteelEachSCS617- SKU:
- SCS617
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- MFG Part #:
- 617
$148.99 -
SCS Quick Change Gear Set 6 Spline 616
SCS GEARS
$148.99Quick Change Gear SetProfessionalSet 6166 Spline4.11 Ratio 2.53 / 6.684.33 Ratio 2.66 / 7.04SteelEachSCS616- SKU:
- SCS616
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- MFG Part #:
- 616
$148.99 -
SCS Quick Change Gear Set 6 Spline 615
SCS GEARS
$148.99Quick Change Gear SetProfessionalSet 6156 Spline4.11 Ratio 2.57 / 6.584.33 Ratio 2.71 / 6.93SteelEachSCS615- SKU:
- SCS615
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- MFG Part #:
- 615
$148.99 -
SCS Quick Change Gear Set 6 Spline 613
SCS GEARS
$148.99Quick Change Gear SetProfessionalSet 6136 Spline4.11 Ratio 2.64 / 6.394.33 Ratio 2.78 / 6.74SteelEachSCS613- SKU:
- SCS613
- Availability:
- Ships Same Business Day
- Weight:
- 2.72 LBS
- MFG Part #:
- 613
$148.99 -
SCS Quick Change Gear Set 6 Spline 612
SCS GEARS
$148.99Quick Change Gear SetProfessionalSet 6126 Spline4.11 Ratio 2.70 / 6.264.33 Ratio 2.84 / 6.60SteelEachSCS612- SKU:
- SCS612
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- MFG Part #:
- 612
$148.99 -
SCS Quick Change Gear Set 6 Spline 611
SCS GEARS
$148.99Quick Change Gear SetProfessionalSet 6116 Spline4.11 Ratio 2.74 / 6.174.33 Ratio 2.89 / 6.50SteelEachSCS611- SKU:
- SCS611
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- MFG Part #:
- 611
$148.99 -
SCS Quick Change Gear Set 6 Spline 610
SCS GEARS
$148.99Quick Change Gear SetProfessionalSet 6106 Spline4.11 Ratio 2.83 / 5.984.33 Ratio 2.98 / 6.30SteelEachSCS610- SKU:
- SCS610
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- MFG Part #:
- 610
$148.99 -
SCS Quick Change Gear Set 43
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 4310 Spline4.11 Ratio 6.42 / 2.634.86 Ratio 7.59 / 3.11SteelEachSCS43- SKU:
- SCS43
- Availability:
- Ships Same Business Day
- Weight:
- 4.57 LBS
- MFG Part #:
- 43
$187.99 -
SCS Quick Change Gear Set 41
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 4110 Spline4.11 Ratio 6.77 / 2.494.86 Ratio 8.00 / 2.95SteelEachSCS41- SKU:
- SCS41
- Availability:
- Ships Same Business Day
- Weight:
- 4.83 LBS
- MFG Part #:
- 41
$187.99 -
SCS Quick Change Gear Set 37
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 3710 Spline4.11 Ratio 6.07 / 2.784.86 Ratio 7.18 / 3.29SteelEachSCS37- SKU:
- SCS37
- Availability:
- Ships Same Business Day
- Weight:
- 4.83 LBS
- MFG Part #:
- 37
$187.99 -
SCS Quick Change Gear Set 36
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 3610 Spline4.11 Ratio 6.04 / 2.804.86 Ratio 7.15 / 3.30SteelEachSCS36- SKU:
- SCS36
- Availability:
- Ships Same Business Day
- Weight:
- 5.03 LBS
- MFG Part #:
- 36
$187.99 -
SCS Quick Change Gear Set 35
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 3510 Spline4.11 Ratio 5.80 / 2.914.86 Ratio 6.86 / 3.44SteelEachSCS35- SKU:
- SCS35
- Availability:
- Ships Same Business Day
- Weight:
- 5.17 LBS
- MFG Part #:
- 35
$187.99 -
SCS Quick Change Gear Set 34
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 3410 Spline4.11 Ratio 5.63 / 3.004.86 Ratio 6.65 / 3.55SteelEachSCS34- SKU:
- SCS34
- Availability:
- Ships Same Business Day
- Weight:
- 5.06 LBS
- MFG Part #:
- 34
$187.99 -
SCS Quick Change Gear Set 33K
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 33K10 Spline4.11 Ratio 6.94 / 2.434.86 Ratio 8.20 / 2.88SteelEachSCS33K- SKU:
- SCS33K
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- MFG Part #:
- 33K
$187.99 -
SCS Quick Change Gear Set 32K
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 32K10 Spline4.11 Ratio 5.89 / 2.874.86 Ratio 6.97 / 3.39SteelEachSCS32K- SKU:
- SCS32K
- Availability:
- Ships Same Business Day
- Weight:
- 4.88 LBS
- MFG Part #:
- 32K
$187.99 -
SCS Quick Change Gear Set 31
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 3110 Spline4.11 Ratio 6.85 / 2.464.86 Ratio 8.10 / 2.91SteelEachSCS31- SKU:
- SCS31
- Availability:
- Ships Same Business Day
- Weight:
- 4.72 LBS
- MFG Part #:
- 31
$187.99 -
SCS Quick Change Gear Set 30K
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 30K10 Spline4.11 Ratio 7.12 / 2.374.86 Ratio 8.42 / 2.80SteelEachSCS30K- SKU:
- SCS30K
- Availability:
- Ships Same Business Day
- Weight:
- 4.92 LBS
- MFG Part #:
- 30K
$187.99 -
SCS Quick Change Gear Set 30
SCS GEARS
$187.99Quick Change Gear SetProfessionalSet 3010 Spline4.11 Ratio 6.67 / 2.534.86 Ratio 7.89 / 2.99SteelEachSCS30- SKU:
- SCS30
- Availability:
- Ships Same Business Day
- Weight:
- 4.92 LBS
- MFG Part #:
- 30
$187.99