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!
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- Price
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PST Steel Driveshaft 45in Long 2.5in Dia. 250450
PRECISION SHAFT TECHNOLOGIES
$313.99A quality driveshaft is the backbone of reliable power delivery—it transfers engine torque to your wheels without flex or vibration that compromises handling and acceleration. The PST Steel Driveshaft is built for racers and serious enthusiasts who...PST250450- SKU:
- PST250450
- Availability:
- Ships Same Business Day
- Weight:
- 15.00 LBS
$313.99Qty in Cart: 0Quantity:Price:$313.99Subtotal: -
Crank Adapter Sleeve SBF to GM Transmission 1800302
PRW INDUSTRIES, INC.
$23.43If you're adapting a GM torque converter to a Small Block Ford crankshaft, this sleeve is a non-negotiable component for a solid mechanical interface. A precision-fit adapter ensures proper converter engagement, eliminates runout, and prevents...PQX1800302- SKU:
- PQX1800302
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$23.43 -
153 Tooth SFI Flexplate Int. Balance 871012
PIONEER
$223.99A flexplate is a critical component that bridges your engine and transmission—it must be engineered to withstand extreme rotational forces without failure. This 153-tooth SFI-certified flexplate delivers the durability and precision required for...PIO871012- SKU:
- PIO871012
- Availability:
- Ships Same Business Day
- Weight:
- 5.16 LBS
$223.99 -
168 Tooth SFI Flexplate Int. Balance 871011
PIONEER
$125.99A flexplate is critical to your engine's reliability and starter engagement—cheap components fail under load and cause costly downtime. This 168-tooth SFI-certified flexplate delivers the precision balance and durability required for high-performance...PIO871011- SKU:
- PIO871011
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
$125.99 -
168 Tooth SFI Flexplate 871001
PIONEER
$88.99If you're running a high-performance Chevy V8 with an automatic transmission, your flexplate is working hard every time you hit the throttle. A worn or damaged flexplate compromises torque transfer, creates vibration, and can leave you stranded. The 168...PIO871001- SKU:
- PIO871001
- Availability:
- Ships Same Business Day
- Weight:
- 6.73 LBS
$88.99 -
Proform TH350 Locking Dipstick & Tube 66181
PROFORM
$30.99Accurate transmission fluid level monitoring is critical for TH350 reliability and performance—especially under racing or high-load conditions where fluid degradation accelerates. The Proform locking dipstick eliminates the guesswork with a secure,...PFM66181- SKU:
- PFM66181
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$30.99 -
Proform TH350 Locking Dipstick Chrome 66175
PROFORM
$42.99Accurate transmission fluid levels are non-negotiable for TH350 performance and longevity. This locking dipstick eliminates guesswork during maintenance and prevents accidental removal while the engine runs, keeping your fluid level readings consistent...PFM66175- SKU:
- PFM66175
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$42.99 -
Proform GM Powerglide Trans Dipstick Locking Short 66173
PROFORM
$32.99Accurate transmission fluid monitoring is non-negotiable when you're running a Powerglide—guesswork leads to costly damage. This Proform locking dipstick eliminates measurement uncertainty with a solid steel design that won't flex or bind, giving you...PFM66173- SKU:
- PFM66173
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
$32.99 -
Proform GM Powerglide Trans Dipstick Locking Long 66172
PROFORM
$33.99Accurate fluid level monitoring is critical for Powerglide transmission longevity and performance, and a worn or damaged dipstick compromises your ability to maintain proper ATF levels. This Proform locking dipstick eliminates the guesswork with a solid...PFM66172- SKU:
- PFM66172
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
$33.99 -
PEM 32.5 Solid Axle Wide 5 31 Spline W532531
PEM
$111.99The PEM 32.5 Solid Axle Wide 5 is engineered for serious drag racing and high-load applications where reliability under extreme conditions is non-negotiable. Built with a 31-spline carrier and 24-spline drive flange, this shaft delivers the strength...PEMW532531- SKU:
- PEMW532531
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
$111.99 -
PEM 29.5 Solid Axle Wide 5 31 Spline W529531
PEM
$107.99A quality axle shaft is the foundation of reliable power transmission in solid axle suspensions. The PEM 29.5 Wide 5 delivers the durability and precision fitment that serious racers and off-road builders demand, whether you're running a vintage hot rod...PEMW529531- SKU:
- PEMW529531
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
$107.99 -
PEM Quick Change Assembly No Tubes Max Option 4.86 QCNT-486MAX
PEM
$2,226.99Quick-change rear ends eliminate downtime between races by letting you swap gear ratios in minutes instead of hours. The PEM Max Option design delivers the strength and precision you need for high-horsepower applications, whether you're chasing lap times...PEMQCNT-486MAX- SKU:
- PEMQCNT-486MAX
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$2,226.99 -
PEM Quick Change Assembly Max 4.86 5x5 Hubs Axles QCKSTGN5-486MAX-60CP
PEM
$3,194.99Quick-change rear ends save critical seconds during competition and testing—every adjustment matters when you're chasing lap times or dial-in precision. This PEM assembly delivers a 4.86 gear ratio with 5x5 hub compatibility, engineered for racers who...PEMQCKSTGN5-486MAX-60CP- SKU:
- PEMQCKSTGN5-486MAX-60CP
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$3,194.99 -
PEM New Stamped Floater Metric Kit 58in Center HNMK2902904
PEM
$1,286.99If you're building a high-performance rear axle assembly for serious drag racing or road course competition, a properly engineered floater kit is non-negotiable. The PEM New Stamped Floater Metric Kit delivers the structural integrity and load-carrying...PEMHNMK2902904- SKU:
- PEMHNMK2902904
- Availability:
- Ships Same Business Day
- Weight:
- 62.45 LBS
$1,286.99Qty in Cart: 0Quantity:Price:$1,286.99Subtotal: -
PEM GM Metric New Stamped Floater Housing 60in Cen HNM300300
PEM
$690.99A precision-engineered rear axle housing built for serious racers and high-performance builds, the PEM GM Metric Stamped Floater Housing delivers the structural integrity and load capacity you need for extreme motorsports applications. The 60-inch...PEMHNM300300- SKU:
- PEMHNM300300
- Availability:
- Ships Same Business Day
- Weight:
- 55.00 LBS
$690.99 -
PEM New Stamped Floater Housing 58in Cent HN290290
PEM
$528.99A solid rear axle housing is the foundation of any high-performance 9-inch setup, and this PEM stamped floater design delivers the strength and geometry you need for consistent track performance. The 58-inch centered width provides optimal weight...PEMHN290290- SKU:
- PEMHN290290
- Availability:
- Ships Same Business Day
- Weight:
- 62.45 LBS
$528.99 -
PEM 9in Gear Full Spool 6.33 Ratio New Center Section CSFS63331
PEM
$718.99A full spool differential eliminates wheel spin by locking both rear wheels together, delivering maximum traction off the line—essential for dedicated drag racing, street racing, and high-performance driving where consistency matters. The PEM 9in Gear...PEMCSFS63331- SKU:
- PEMCSFS63331
- Availability:
- Ships Same Business Day
- Weight:
- 70.00 LBS
$718.99 -
PEM 9in Gear Full Spool 6.20 Ratio New Center Section CSFS62031
PEM
$718.99A 6.20 gear ratio spool is essential for high-horsepower applications where you need aggressive acceleration off the line without sacrificing drivability on the street. This PEM unit delivers the strength and precision demanded by serious racers and...PEMCSFS62031- SKU:
- PEMCSFS62031
- Availability:
- Ships Same Business Day
- Weight:
- 42.00 LBS
$718.99 -
PEM 9in Gear Full Spool 5.83 Ratio New Center Section CSFS58331
PEM
$718.99If you're serious about track performance or drag racing, you need a differential that can handle sustained power delivery without slipping. The PEM 9in Gear Full Spool delivers a locked-axle platform with a 5.83 ratio—ideal for acceleration-focused...PEMCSFS58331- SKU:
- PEMCSFS58331
- Availability:
- Ships Same Business Day
- Weight:
- 40.00 LBS
$718.99 -
PEM 9in Gear Full Spool 3.70 Ratio New Center 31 CSFS37031
PEM
$718.99A full spool differential eliminates wheel slip and ensures both rear wheels receive equal power delivery—essential for consistent traction during hard acceleration and cornering. The PEM 9in Gear Full Spool with its proven 3.70 ratio strikes the balance...PEMCSFS37031- SKU:
- PEMCSFS37031
- Availability:
- Ships Same Business Day
- Weight:
- 74.00 LBS
$718.99
