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
-
SCS Quick Change Gear Set 5
SCS GEARS
$202.99Quick-change gear sets eliminate downtime between races by letting you swap ratios in minutes rather than hours. The SCS Set 5 gives you two proven gear combinations—4.11 and 4.86 ratios—so you can dial in the perfect setup for any track condition or...SCS05- SKU:
- SCS05
- Availability:
- Ships Same Business Day
- Weight:
- 5.38 LBS
- MFG Part #:
- 5
$202.99 -
SCS Quick Change Gear Set 04K
SCS GEARS
$202.99Quick-change gear sets eliminate downtime between races by allowing you to swap ratios in minutes rather than hours, keeping you competitive across different track conditions and configurations. The SCS 04K delivers the precision engineering and...SCS04K- SKU:
- SCS04K
- Availability:
- Ships Same Business Day
- Weight:
- 5.32 LBS
- MFG Part #:
- 04K
$202.99 -
SCS Quick Change Gear Set 4
SCS GEARS
$202.99If you're serious about drag racing or competition driving, gear selection is everything—and the SCS Quick Change Gear Set 4 lets you dial in your ratios without pulling the entire differential apart. This professional-grade set gives you two proven...SCS04- SKU:
- SCS04
- Availability:
- Ships Same Business Day
- Weight:
- 4.95 LBS
- MFG Part #:
- 4
$202.99 -
SCS Quick Change Gear Set 3
SCS GEARS
$202.99If you're running a dedicated drag or sprint car, gear ratios can make or break your ET. The SCS Quick Change Gear Set 3 lets you dial in your final drive on the fly—no teardown required—so you can optimize for track conditions, weather, and fuel type...SCS03- SKU:
- SCS03
- Availability:
- Ships Same Business Day
- Weight:
- 4.90 LBS
- MFG Part #:
- 3
$202.99 -
SCS Quick Change Gear Set 2
SCS GEARS
$202.99Quick-change gear sets are essential for racers who need to dial in performance across varying track conditions and competition formats without breaking down the entire differential. The SCS Quick Change Gear Set 2 delivers professional-grade durability...SCS02- SKU:
- SCS02
- Availability:
- Ships Same Business Day
- Weight:
- 4.47 LBS
- MFG Part #:
- 2
$202.99 -
SBC Flexplate - SFI- 168 Tooth- Ext. Balance FP-400-SFI
SCAT ENTERPRISES
$88.99A flexplate is critical infrastructure for any SBC engine running an automatic transmission—it's the direct link between your engine's crankshaft and torque converter, and it absolutely must handle your power levels safely. OEM flexplates often fail...SCAFP-400-SFI- SKU:
- SCAFP-400-SFI
- Availability:
- Ships Same Business Day
- Weight:
- 6.90 LBS
- MFG Part #:
- FP-400-SFI
$88.99 -
SBC Flexplate - SFI- 168 Tooth- Int. Balance FP-350-SFI
SCAT ENTERPRISES
$94.99A quality flexplate is critical to reliable engine startup and smooth power delivery to your transmission. The SBC Flexplate SFI-168 Tooth is engineered for high-performance small-block Chevy applications, meeting SFI 29.1 safety standards while...SCAFP-350-SFI- SKU:
- SCAFP-350-SFI
- Availability:
- Ships Same Business Day
- Weight:
- 6.40 LBS
- MFG Part #:
- FP-350-SFI
$94.99 -
SBC Flexplate - SFI- 168 Tooth- Ext. Balance FP-350L-SFI
SCAT ENTERPRISES
$96.99A flexplate is critical to your engine's reliability—it directly transfers power from your crankshaft to the torque converter while withstanding extreme rotational forces. This SBC flexplate is engineered to SFI 29.1 specifications, meaning it's been...SCAFP-350L-SFI- SKU:
- SCAFP-350L-SFI
- Availability:
- Ships Same Business Day
- Weight:
- 7.26 LBS
- MFG Part #:
- FP-350L-SFI
$96.99 -
SBC Flexplate - SFI- 153 Tooth- Ext. Balance FP-350L-153-SFI
SCAT ENTERPRISES
$95.99A quality flexplate is critical infrastructure for any reliable small block Chevy engine—it's the direct link between your engine and transmission, handling extreme rotational forces at high RPM. This SBC flexplate is engineered to SFI 29.1 standards...SCAFP-350L-153-SFI- SKU:
- SCAFP-350L-153-SFI
- Availability:
- Ships Same Business Day
- Weight:
- 5.86 LBS
- MFG Part #:
- FP-350L-153-SFI
$95.99 -
SBC Flexplate - SFI- 153 Tooth- Int. Balance FP-305-SFI
SCAT ENTERPRISES
$82.99A flexplate is the critical link between your engine and transmission—get it wrong, and you're looking at catastrophic drivetrain failure. This SBC flexplate is SFI-certified for safety and internally balanced to eliminate vibration and protect your...SCAFP-305-SFI- SKU:
- SCAFP-305-SFI
- Availability:
- Ships Same Business Day
- Weight:
- 5.64 LBS
- MFG Part #:
- FP-305-SFI
$82.99 -
SBF Flexplate - SFI- 164 Tooth- 50.5oz. FP-302L-SFI
SCAT ENTERPRISES
$89.99If you're building a serious small block Ford engine with external balance requirements, this SBF flexplate delivers the precision fit and durability your drivetrain demands. SFI-certified construction ensures safety under high RPM and forced induction...SCAFP-302L-SFI- SKU:
- SCAFP-302L-SFI
- Availability:
- Ships Same Business Day
- Weight:
- 8.17 LBS
- MFG Part #:
- FP-302L-SFI
$89.99 -
SBF Flexplate - SFI- 164 Tooth- 28.8oz. FP-302E-SFI
SCAT ENTERPRISES
$89.99A quality flexplate is non-negotiable for any serious Small Block Ford build—it directly affects engine balance, transmission reliability, and overall drivetrain durability. This SBF flexplate delivers SFI 29.1 certification for safety-critical racing...SCAFP-302E-SFI- SKU:
- SCAFP-302E-SFI
- Availability:
- Ships Same Business Day
- Weight:
- 8.23 LBS
- MFG Part #:
- FP-302E-SFI
$89.99Qty in Cart: 0Quantity:Price:$89.99Subtotal: -
SBF Flexplate - SFI- 157 Tooth- 28.8oz. FP-302-157-SFI
SCAT ENTERPRISES
$113.99A quality flexplate is critical for reliable engine-to-transmission coupling, especially in high-performance applications where vibration and stress are amplified. This SBF flexplate delivers the precision engineering needed for consistent starts and...SCAFP-302-157-SFI- SKU:
- SCAFP-302-157-SFI
- Availability:
- Ships Same Business Day
- Weight:
- 6.44 LBS
- MFG Part #:
- FP-302-157-SFI
$113.99 -
Racequip Shifter Boot FR Medium 9in Tall 871003
RACEQUIP
$87.15A quality shifter boot protects your transmission tunnel from heat, debris, and fire hazards while maintaining a clean, professional interior appearance. The Racequip FR Medium combines fire-retardant materials with a proven design that's trusted in...RQP871003- SKU:
- RQP871003
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MFG Part #:
- 871003
$87.15 -
GM 8.5 10 Bolt Car Mega Installation Kit 83-1021-M
RICHMOND
$198.99A differential rebuild demands precision—misaligned bearings, improper crush sleeve installation, or missing seals can quickly turn a fresh build into catastrophic failure. This comprehensive installation kit eliminates guesswork by bundling every...RIC83-1021-M- SKU:
- RIC83-1021-M
- Availability:
- Ships Same Business Day
- Weight:
- 7.13 LBS
- MFG Part #:
- 83-1021-M
$198.99 -
6.20 Ratio 9in Ford 69-0290-1
RICHMOND
$465.99A 6.20 ratio ring and pinion transforms your Ford 9-inch differential into a high-revving powerhouse, delivering quicker acceleration and sharper throttle response ideal for drag racing, road course competition, or street performance builds. This...RIC69-0290-1- SKU:
- RIC69-0290-1
- Availability:
- Ships Same Business Day
- Weight:
- 19.36 LBS
- MFG Part #:
- 69-0290-1
$465.99 -
5.83 Ratio 9in Ford 69-0288-1
RICHMOND
$380.99If you're running a Ford 9-inch rear and need quicker acceleration off the line or better track responsiveness, a 5.83 ratio ring and pinion kit is the direct path to getting there. This ratio sits in the sweet spot for street-strip builds and...RIC69-0288-1- SKU:
- RIC69-0288-1
- Availability:
- Ships Same Business Day
- Weight:
- 19.31 LBS
- MFG Part #:
- 69-0288-1
$380.99 -
6.33 Ratio 9in Ford 69-0276-1
RICHMOND
$348.99A 6.33 gear ratio delivers quicker acceleration and stronger low-end torque response, making it ideal for drag racing, road course competition, or street applications where aggressive launch characteristics matter. This Ford 9-inch ring and pinion kit...RIC69-0276-1- SKU:
- RIC69-0276-1
- Availability:
- Ships Same Business Day
- Weight:
- 21.43 LBS
- MFG Part #:
- 69-0276-1
$348.99Qty in Cart: 0Quantity:Price:$348.99Subtotal: -
5.43 Ratio 9in Ford 69-0069-1
RICHMOND
$300.99A 5.43 ratio ring and pinion transforms your Ford 9-inch differential into a serious acceleration machine, delivering quicker spool-up and explosive off-the-line performance for street and strip applications. Whether you're chasing ET records or...RIC69-0069-1- SKU:
- RIC69-0069-1
- Availability:
- Ships Same Business Day
- Weight:
- 19.17 LBS
- MFG Part #:
- 69-0069-1
$300.99 -
5.14 Ratio 9in Ford 69-0068-1
RICHMOND
$465.99A 5.14 ratio ring and pinion setup transforms your Ford 9-inch differential into a torque-multiplying powerhouse, delivering aggressive acceleration and superior launch characteristics for competition and high-performance street applications. Whether...RIC69-0068-1- SKU:
- RIC69-0068-1
- Availability:
- Ships Same Business Day
- Weight:
- 20.60 LBS
- MFG Part #:
- 69-0068-1
$465.99
