Automatic Transmissions and Components
Circle Track Automatic Transmissions & Components at JJ Motorsports
Elevate your circle track performance with automatic transmissions and components from JJ Motorsports. Offering seamless power delivery without manual shifts, these systems include flexplates, torque converters, clutches, and adapters tailored for high-speed racing in IMCA, USMTS, and dirt oval events, ensuring focus and reliability for late models, modifieds, and street stocks.
Shop trusted brands like Allstar Performance for SFI-certified flexplates, ATI Performance for high-stall converters, and TCI for transmission rebuild kits. Explore related categories such as Circle Track Flexplates and Components for engine connection upgrades or Circle Track Torque Converters and Components for stall speed optimization.
Top Circle Track Automatic Transmissions & Components
- PRW Chromoly Flexplate SFI SBC 168T Internal Balance PQX1835001 – Flexplate Gold Series 168 Tooth SFI 29.1 Chromoly Internal Balance 2 Piece Seal Small Block Chevy / V6 Each.
- Allstar Performance Flexplate 153T SFI Internal Balance ALL26830 – Flexplate 153 Tooth SFI 29.1 Steel Internal Balance 2 Piece Seal Small Block Chevy Each.
- Allstar Performance Flexplate 168T SFI Internal Balance ALL26800 – Flexplate 168 Tooth SFI 29.1 Steel Internal Balance 2 Piece Seal Chevy V8 Each.
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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Pres Reg Spring-Powergli 704300
TCI
$20.95Maintain precise transmission fluid pressure and eliminate erratic shift behavior with this OEM-quality regulator spring. Whether you're tuning a stock Powerglide or running a high-performance build, proper pressure regulation is critical to consistent...TCI704300- SKU:
- TCI704300
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MFG Part #:
- 704300
$20.95 -
Powerglide Over Haul Kit 628800
TCI
$63.95A Powerglide transmission is only as reliable as its sealing integrity—and when you're pushing RPMs at the track or hitting the strip hard, factory seals won't cut it. This complete overhaul kit gives you OEM-equivalent gaskets, sealing rings, and seals...TCI628800- SKU:
- TCI628800
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- MFG Part #:
- 628800
$63.95 -
P/G Pan Gasket & Fltr.Ki 628500
TCI
$33.95Keep your Powerglide transmission running clean and sealed with this purpose-built gasket and filter kit. A fresh filter removes contaminants that degrade fluid quality and shift performance, while a quality gasket eliminates leaks that compromise...TCI628500- SKU:
- TCI628500
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- MFG Part #:
- 628500
$33.95 -
Race Low Gear Band GM P/G 625101
TCI
$116.95The Race Low Gear Band is engineered for Powerglide transmissions that see serious track duty. When you're launching hard or running repeated acceleration runs, OEM bands wear out fast—this heavy-duty replacement keeps your low-gear engagement crisp and...TCI625101- SKU:
- TCI625101
- Availability:
- Ships Same Business Day
- Weight:
- 1.98 LBS
- MFG Part #:
- 625101
$116.95 -
P/G Bushing Kit 623700
TCI
$38.95Worn transmission bushings lead to excessive play, noise, and premature wear on your Powerglide's internal components. This complete bushing kit eliminates slack in the transmission housing, restoring precise shift feel and protecting your investment in...TCI623700- SKU:
- TCI623700
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- MFG Part #:
- 623700
$38.95 -
Ford 289-351 Flywheel 529632
TCI
$377.95If you're running a Ford 289-351 engine with a GM transmission swap, this flywheel bridges the gap between two different bolt patterns without compromise. Built to SFI 29.1 specifications and internally balanced, it delivers the reliability you need for...TCI529632- SKU:
- TCI529632
- Availability:
- Ships Same Business Day
- Weight:
- 12.61 LBS
- MFG Part #:
- 529632
$377.95Qty in Cart: 0Quantity:Price:$377.95Subtotal: -
Alum. P/G Trany Pan Stock Depth 528300
TCI
$169.95A quality transmission pan is foundational to reliable cooling and heat dissipation in any Powerglide setup. This aluminum pan maintains OEM depth while offering superior thermal management compared to stock steel units, keeping fluid temperatures in the...TCI528300- SKU:
- TCI528300
- Availability:
- Ships Same Business Day
- Weight:
- 9.62 LBS
- MFG Part #:
- 528300
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
153 Tooth Chevy Flywheel 399573
TCI
$147.95A reliable flywheel is the foundation of any high-performance small block Chevy engine—it directly impacts your starter engagement, engine balance, and overall drivability. This 153-tooth flexplate delivers the precision fitment and durability you need...TCI399573- SKU:
- TCI399573
- Availability:
- Ships Same Business Day
- Weight:
- 5.39 LBS
- MFG Part #:
- 399573
$147.95 -
Ext Bal 400 Gm Flexplate 399373
TCI
$134.95A quality flexplate is fundamental to a reliable driveline—it's the critical link between your engine and transmission that must handle consistent torque cycles without failure. This 400-gram external balance unit is engineered for Small Block Chevy...TCI399373- SKU:
- TCI399373
- Availability:
- Ships Same Business Day
- Weight:
- 7.36 LBS
- MFG Part #:
- 399373
$134.95 -
SFI Flexplate Chevy V8 168 Tooth Int Balance 399273
TCI
$137.95A flexplate is the critical link between your engine and transmission—it must be precision-engineered to handle power transfer without deflection or premature failure. This SFI-certified flexplate is engineered for Small Block Chevy engines and designed...TCI399273- SKU:
- TCI399273
- Availability:
- Ships Same Business Day
- Weight:
- 6.81 LBS
- MFG Part #:
- 399273
$137.95Qty in Cart: 0Quantity:Price:$137.95Subtotal: -
SFI Flexplate GM LT1 153 Tooth Ext. Balance 399173
TCI
$156.95If you're running a high-performance LT1 engine with external balance, you need a flexplate engineered to handle the demands of your rotating assembly. This SFI-certified unit eliminates the guesswork of fitment and balance, giving you the reliability...TCI399173- SKU:
- TCI399173
- Availability:
- Ships Same Business Day
- Weight:
- 5.45 LBS
- MFG Part #:
- 399173
$156.95 -
Torque Converter FastLap GM TH350 Circle Track 242125
TCI
$430.95A proper torque converter is critical for consistent lap times and reliability on the circle track. The Torque Converter FastLap GM TH350 delivers predictable power transfer and lock-up performance, eliminating converter slippage that costs you tenths in...TCI242125- SKU:
- TCI242125
- Availability:
- Ships Same Business Day
- Weight:
- 27.50 LBS
- MFG Part #:
- 242125
$430.95 -
11in Circle Track Torque Converter 2000-2300 RPM 240920
TCI
$525.95A quality torque converter is fundamental to circle track performance—it directly impacts your launch characteristics, consistency off the line, and overall acceleration through the turns. This 11-inch converter is engineered specifically for circle...TCI240920- SKU:
- TCI240920
- Availability:
- Ships Same Business Day
- Weight:
- 32.00 LBS
- MFG Part #:
- 240920
$525.95 -
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
$85.99A 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
$85.99 -
SBC Flexplate - SFI- 168 Tooth- Ext. Balance FP-350L-SFI
SCAT ENTERPRISES
$90.99A 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
$90.99 -
SBC Flexplate - SFI- 153 Tooth- Ext. Balance FP-350L-153-SFI
SCAT ENTERPRISES
$86.99A 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
$86.99 -
SBC Flexplate - SFI- 153 Tooth- Int. Balance FP-305-SFI
SCAT ENTERPRISES
$79.99A 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
$79.99 -
SBF Flexplate - SFI- 164 Tooth- 50.5oz. FP-302L-SFI
SCAT ENTERPRISES
$79.99If 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
$79.99 -
SBF Flexplate - SFI- 164 Tooth- 28.8oz. FP-302E-SFI
SCAT ENTERPRISES
$79.99A 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
$79.99
