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
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SCS Quick Change Gear Set 11
SCS GEARS
$204.99Quick-change gear sets eliminate the guesswork when tuning your vehicle's final drive ratio for different track conditions or racing classes. The SCS Set 11 delivers two proven gear combinations in...SCS11- SKU:
- SCS11
- Availability:
- Ships Same Business Day
- Weight:
- 5.15 LBS
- MFG Part #:
- 11
$204.99Qty in Cart: 0Quantity:Price:$204.99Subtotal: -
SCS Sportsman QC Gear Set 109K
SCS GEARS
$103.99The SCS Sportsman QC Gear Set 109K delivers the flexibility serious racers demand—swap gear ratios between rounds without pulling your differential. Built from premium steel with precision 10-spline...SCS109K- SKU:
- SCS109K
- Availability:
- Ships Same Business Day
- Weight:
- 6.38 LBS
- MFG Part #:
- 109K
$103.99 -
SCS Sportsman QC Gear Set 109
SCS GEARS
$103.99Quick-change gear sets are essential for competitive racers who need to optimize their differential ratios between rounds without pulling the entire carrier. The SCS Sportsman QC Gear Set 109...SCS109- SKU:
- SCS109
- Availability:
- Ships Same Business Day
- Weight:
- 6.35 LBS
- MFG Part #:
- 109
$103.99 -
SCS Sportsman QC Gear Set 108K
SCS GEARS
$103.99Quick-change gear sets eliminate downtime between races by letting you swap ratios in minutes without breaking down your differential. The SCS Sportsman QC 108K delivers the gear options you need to...SCS108K- SKU:
- SCS108K
- Availability:
- Ships Same Business Day
- Weight:
- 6.35 LBS
- MFG Part #:
- 108K
$103.99 -
SCS Sportsman QC Gear Set 108
SCS GEARS
$103.99Quick-change gear sets are essential for racers who need to optimize performance across multiple track conditions without spending hours on rear-end work. The SCS Sportsman QC Gear Set 108 delivers...SCS108- SKU:
- SCS108
- Availability:
- Ships Same Business Day
- Weight:
- 6.18 LBS
- MFG Part #:
- 108
$103.99Qty in Cart: 0Quantity:Price:$103.99Subtotal: -
SCS Sportsman QC Gear Set 107K
SCS GEARS
$103.99Quick-change gear sets eliminate downtime between races by letting you swap ratios in minutes without breaking down your differential. The SCS Sportsman 107K delivers the versatility serious racers...SCS107K- SKU:
- SCS107K
- Availability:
- Ships Same Business Day
- Weight:
- 5.73 LBS
- MFG Part #:
- 107K
$103.99 -
SCS Sportsman QC Gear Set 107
SCS GEARS
$103.99The SCS Sportsman QC Gear Set 107 lets you dial in the perfect ratio for your specific track or racing application without swapping entire differentials. Quick-change design means faster setup...SCS107- SKU:
- SCS107
- Availability:
- Ships Same Business Day
- Weight:
- 6.35 LBS
- MFG Part #:
- 107
$103.99 -
SCS Sportsman QC Gear Set 104K
SCS GEARS
$103.99Quick-change gear sets eliminate downtime between races by letting you swap ratios in minutes rather than hours—critical when track conditions shift or you're running multiple classes in a single...SCS104K- SKU:
- SCS104K
- Availability:
- Ships Same Business Day
- Weight:
- 6.31 LBS
- MFG Part #:
- 104K
$103.99 -
SCS Sportsman QC Gear Set 104
SCS GEARS
$103.99Quick-change gear sets are essential for racers who demand flexibility without the downtime of traditional differential rebuilds. The SCS Sportsman QC Gear Set 104 lets you swap ratios between...SCS104- SKU:
- SCS104
- Availability:
- Ships Same Business Day
- Weight:
- 6.40 LBS
- MFG Part #:
- 104
$103.99 -
SCS Sportsman QC Gear Set 1037
SCS GEARS
$103.99Quick-change gear sets eliminate downtime between rounds by letting you swap ratios in minutes instead of hours. Whether you're chasing the perfect launch RPM for varying track conditions or...SCS1037- SKU:
- SCS1037
- Availability:
- Ships Same Business Day
- Weight:
- 6.58 LBS
- MFG Part #:
- 1037
$103.99Qty in Cart: 0Quantity:Price:$103.99Subtotal: -
SCS Sportsman QC Gear Set 1036
SCS GEARS
$103.99If you're serious about consistent performance across different track conditions, you need the flexibility to dial in your gear ratio without swapping entire differentials. The SCS Sportsman QC Gear...SCS1036- SKU:
- SCS1036
- Availability:
- Ships Same Business Day
- Weight:
- 6.52 LBS
- MFG Part #:
- 1036
$103.99 -
SCS Sportsman QC Gear Set 1035
SCS GEARS
$103.99The SCS Sportsman QC Gear Set 1035 lets you swap gear ratios in seconds without breaking down your differential—critical for racers who need to dial in performance between heats or track conditions...SCS1035- SKU:
- SCS1035
- Availability:
- Ships Same Business Day
- Weight:
- 6.40 LBS
- MFG Part #:
- 1035
$103.99Qty in Cart: 0Quantity:Price:$103.99Subtotal: -
SCS Sportsman QC Gear Set 1034
SCS GEARS
$103.99Quick-change gear sets are essential for racers who need to adapt their drivetrain setup between rounds without removing the entire differential housing. The SCS Sportsman QC Gear Set 1034 gives you...SCS1034- SKU:
- SCS1034
- Availability:
- Ships Same Business Day
- Weight:
- 6.49 LBS
- MFG Part #:
- 1034
$103.99Qty in Cart: 0Quantity:Price:$103.99Subtotal: -
SCS Sportsman QC Gear Set 1032K
SCS GEARS
$103.99The SCS Sportsman QC Gear Set 1032K lets you dial in your final drive ratio without swapping entire differentials. Quick-change spools save hours of shop time between races, letting you optimize...SCS1032K- SKU:
- SCS1032K
- Availability:
- Ships Same Business Day
- Weight:
- 6.55 LBS
- MFG Part #:
- 1032K
$103.99 -
SCS Sportsman QC Gear Set 1031
SCS GEARS
$103.99Quick-change gear sets eliminate downtime between rounds by letting you swap ratios in minutes rather than hours. The SCS Sportsman QC 1031 delivers two proven gearing options—4.11 and 4.86 ratios—so...SCS1031- SKU:
- SCS1031
- Availability:
- Ships Same Business Day
- Weight:
- 6.76 LBS
- MFG Part #:
- 1031
$103.99 -
SCS Sportsman QC Gear Set 103
SCS GEARS
$103.99Quick-change gear sets eliminate downtime between races by letting you swap ratios in minutes without removing the entire differential housing. The SCS Sportsman QC Set 103 gives you two proven ratio...SCS103- SKU:
- SCS103
- Availability:
- Ships Same Business Day
- Weight:
- 6.40 LBS
- MFG Part #:
- 103
$103.99Qty in Cart: 0Quantity:Price:$103.99Subtotal: -
SCS Sportsman QC Gear Set 1028
SCS GEARS
$103.99Quick-change gear sets are essential for racers who demand flexibility without sacrificing performance or losing valuable track time to drivetrain swaps. The SCS Sportsman QC 1028 delivers two proven...SCS1028- SKU:
- SCS1028
- Availability:
- Ships Same Business Day
- Weight:
- 6.67 LBS
- MFG Part #:
- 1028
$103.99 -
SCS Sportsman QC Gear Set 1026
SCS GEARS
$103.99Quick-change gear sets are essential for racers who need to optimize performance across different track conditions without swapping entire differentials. The SCS Sportsman QC Gear Set 1026 delivers...SCS1026- SKU:
- SCS1026
- Availability:
- Ships Same Business Day
- Weight:
- 6.34 LBS
- MFG Part #:
- 1026
$103.99 -
SCS Sportsman QC Gear Set 1024
SCS GEARS
$103.99Quick-change gear sets are essential for racers who demand flexibility without sacrificing performance or reliability. The SCS Sportsman QC 1024 lets you switch ratios between rounds or races in...SCS1024- SKU:
- SCS1024
- Availability:
- Ships Same Business Day
- Weight:
- 6.56 LBS
- MFG Part #:
- 1024
$103.99 -
SCS Sportsman QC Gear Set 1023
SCS GEARS
$103.99Quick-change gear sets eliminate downtime between races by letting you swap ratios in minutes without breaking down your differential. The SCS Sportsman QC 1023 gives you two proven ratios in a...SCS1023- SKU:
- SCS1023
- Availability:
- Ships Same Business Day
- Weight:
- 6.61 LBS
- MFG Part #:
- 1023
$103.99
