Crankshafts and Components
Circle Track Crankshafts & Components at JJ Motorsports
Crankshafts endure high-torque loads, converting piston movement into rotational force. Crafted for reliability, they are vital for competitive engines. Pair them with complementary engine solutions to unlock maximum torque and power in demanding IMCA, USMTS, and dirt oval racing for late models, modifieds, and street stocks.
Shop trusted brands like Manley for forged cranks, Allstar Performance for balancing plates, and Lunati for LS crankshafts. Explore related categories such as Circle Track Engines and Components for complete engine upgrades or Circle Track for chassis and suspension parts.
Top Circle Track Crankshafts & Components
- Manley SBC 4340 Forged Crank 3.480 Stroke/350 mains 190310 – Crankshaft 3.480 in Stroke Internal Balance Forged Steel 2 Piece Seal Small Block Chevy Each.
- Allstar Performance 400 Balancing Plate Balance plate ALL26120 – Balance Plate Steel Black Paint Small Block Chevy Each.
- Manley SBC 4340 Forged Crank 3.480 Stroke 350 Mains 190310NB – Crankshaft 3.480 in Stroke Internal Balance Forged Steel 2-Piece Seal 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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SBC 4340 Forged Magnum Crank - 3.750 Stroke SAJ21A-MG
CALLIES
$3,184.00If you're building a serious small block Chevy engine, your crankshaft is the foundation of everything. The SBC 4340 Forged Magnum Crank delivers the strength and precision required for high-RPM performance and reliability, whether you're chasing track...CALSAJ21A-MG- SKU:
- CALSAJ21A-MG
- Availability:
- Ships Same Business Day
- Weight:
- 54.45 LBS
- MFG Part #:
- SAJ21A-MG
$3,184.00Qty in Cart: 0Quantity:Price:$3,184.00Subtotal: -
SBC 4340 Forged Compstar Crank 3.750 Stroke SAJ-213-CS
CALLIES
$1,029.00A forged crankshaft is the foundation of any reliable, high-rpm Small Block Chevy build. The Compstar 4340 forged crank delivers the strength and precision needed for sustained performance, whether you're building a street engine or a competition...CALSAJ213-CS- SKU:
- CALSAJ213-CS
- Availability:
- Ships Same Business Day
- Weight:
- 55.30 LBS
- MFG Part #:
- SAJ213-CS
$1,029.00Qty in Cart: 0Quantity:Price:$1,029.00Subtotal: -
SBC 4340 Forged Compstar Crank - 3.750 Stroke SAJ-113-CS
CALLIES
$1,029.00A forged 4340 steel crankshaft is the foundation of any high-revving Small Block Chevy engine—it's where power generation begins. The Compstar design delivers proven reliability in both street and competition applications, with the internal balance...CALSAJ113-CS- SKU:
- CALSAJ113-CS
- Availability:
- Ships Same Business Day
- Weight:
- 55.45 LBS
- MFG Part #:
- SAJ113-CS
$1,029.00 -
SBC 4340 Forged Compstar Crank - 3.750 Stroke SAJ113-CC
CALLIES
$1,238.00A quality crankshaft is the foundation of any reliable high-performance engine build, and this forged 4340 Compstar crank delivers the strength and precision you need for consistent power delivery and durability under load. The 3.750-inch stroke is a...CALSAJ113-CC- SKU:
- CALSAJ113-CC
- Availability:
- Ships Same Business Day
- Weight:
- 48.15 LBS
- MFG Part #:
- SAJ113-CC
$1,238.00 -
SBC 4340 Forged Magnum Crank - 3.500 Stroke SAG14A-MG
CALLIES
$3,184.00Building a solid foundation for your Small Block Chevy engine starts with a reliable crankshaft that can handle sustained high RPM and aggressive boost levels. The SBC 4340 Forged Magnum Crank delivers the strength and precision you need to maximize...CALSAG14A-MG- SKU:
- CALSAG14A-MG
- Availability:
- Ships Same Business Day
- Weight:
- 51.95 LBS
- MFG Part #:
- SAG14A-MG
$3,184.00 -
SBC 4340 Forged Compstar Crank - 3.500 Stroke SAG143-CM
CALLIES
$1,029.00If you're building a high-performance small block Chevy engine, your crankshaft is the foundation of reliability and power output. The SBC 4340 Forged Compstar Crank delivers the stroke and strength needed to handle aggressive cam profiles, forced...CALSAG143-CM- SKU:
- CALSAG143-CM
- Availability:
- Ships Same Business Day
- Weight:
- 51.45 LBS
- MFG Part #:
- SAG143-CM
$1,029.00 -
SBC 4340 Forged Compstar Crank 3.500 Stroke SAG143-CC
CALLIES
$1,238.00A forged 4340 steel crankshaft is the foundation of any reliable high-performance small block Chevy engine—it resists fatigue cracking under sustained boost and high RPM loads far better than cast alternatives. The Compstar Comet's 3.500" stroke gives...CALSAG143-CC- SKU:
- CALSAG143-CC
- Availability:
- Ships Same Business Day
- Weight:
- 46.50 LBS
- MFG Part #:
- SAG143-CC
$1,238.00 -
SBC 4340 Forged Compstar Crank - 3.500 Stroke SAG-113-CM
CALLIES
$1,029.00A quality forged crankshaft is the backbone of any reliable small block Chevy engine build. The SBC 4340 Forged Compstar Crank delivers the strength and precision needed for sustained high-RPM performance, whether you're building a street engine or...CALSAG113-CM- SKU:
- CALSAG113-CM
- Availability:
- Ships Same Business Day
- Weight:
- 23.86 LBS
- MFG Part #:
- SAG113-CM
$1,029.00Qty in Cart: 0Quantity:Price:$1,029.00Subtotal: -
SBC 4340 Forged Compstar Crank 3.480 Stroke SAF-113-CM
CALLIES
$1,029.00A quality crankshaft is the foundation of any reliable small block Chevy engine build—it's where power generation begins. The SBC 4340 Forged Compstar Crank delivers the durability and precision you need for consistent performance, whether you're...CALSAF113-CM- SKU:
- CALSAF113-CM
- Availability:
- Ships Same Business Day
- Weight:
- 51.20 LBS
- MFG Part #:
- SAF113-CM
$1,029.00 -
Allstar Performance Mandrel Key 1/8in ALL31036
ALLSTAR PERFORMANCE
$7.99Keep your pulleys, gears, and sprockets locked in place with the precision-engineered Allstar Performance Mandrel Key 1/8in (ALL31036). Built from durable steel with a protective zinc oxide finish, this key stock delivers reliable performance under...ALL31036- SKU:
- ALL31036
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- ALL31036
$7.99 -
SBC 4340 Forged Crank - 4.000 Stroke 7-400-4000-6000
SCAT ENTERPRISES
$1,004.99A forged crankshaft is the foundation of any reliable high-revving engine build. The Excalibur SBC 4340 crankshaft delivers the stroke and material strength needed to handle sustained performance demands without sacrificing durability. With external...SCA7-400-4000-6000- SKU:
- SCA7-400-4000-6000
- Availability:
- Ships Same Business Day
- Weight:
- 54.00 LBS
$1,004.99Qty in Cart: 0Quantity:Price:$1,004.99Subtotal: -
Ford 351C 4340 Forged Crank 3.500 Stroke 4-351C-3500-6000
SCAT ENTERPRISES
$1,106.99A forged steel crankshaft is the backbone of any high-revving engine build, and this 351C unit delivers the strength and precision needed to handle aggressive power levels without compromising reliability. Built from 4340 forged steel with a 3.500-inch...SCA4-351C-3500-6000- SKU:
- SCA4-351C-3500-6000
- Availability:
- Ships Same Business Day
- Weight:
- 54.00 LBS
$1,106.99 -
SBC 4340 Forged Crank - 3.875 Stroke 4-350-3875-6000
SCAT ENTERPRISES
$944.99If you're building a high-displacement Small Block Chevy engine and need the backbone to handle sustained power and torque, a quality forged crankshaft is non-negotiable. The SBC 4340 Forged Crank delivers the stroke you need to unlock additional cubic...SCA4-350-3875-6000- SKU:
- SCA4-350-3875-6000
- Availability:
- Ships Same Business Day
- Weight:
- 58.05 LBS
- MFG Part #:
- 4-350-3875-6000
$944.99 -
SBF 4340 Forged Crank - 3.000 Stroke 4-302-3000-5090-2123
SCAT ENTERPRISES
$910.99A forged steel crankshaft is the backbone of any high-rpm small block engine, and this 3.000-stroke SBF crank delivers the durability and precision required for sustained performance. Whether you're building a street engine or a competition platform, a...SCA4-302-3000-5090-2123- SKU:
- SCA4-302-3000-5090-2123
- Availability:
- Ships Same Business Day
- Weight:
- 49.75 LBS
- MFG Part #:
- 4-302-3000-5090-2123
$910.99 -
Eagle SBC 4340 Forged Crank - 4.000 Stroke 440040006000
EAGLE
$897.99A quality crankshaft is the backbone of any high-performance small block Chevy build—it directly impacts power delivery, engine longevity, and overall reliability. The Eagle SBC 4340 Forged Crank delivers the stroke length and material integrity serious...EAG440040006000- SKU:
- EAG440040006000
- Availability:
- Ships Same Business Day
- Weight:
- 59.15 LBS
- MFG Part #:
- CRS440040006000
$897.99Qty in Cart: 0Quantity:Price:$897.99Subtotal: -
Eagle SBC 4340 Forged Crank - 3.875 Stroke 440038756000
EAGLE
$932.99A forged crankshaft is the backbone of any high-output small block engine build. The Eagle SBC 4340 delivers the strength and reliability needed to handle increased boost, nitrous, or naturally aspirated power without risking catastrophic failure. With a...EAG440038756000- SKU:
- EAG440038756000
- Availability:
- Ships Same Business Day
- Weight:
- 59.95 LBS
- MFG Part #:
- CRS440038756000
$932.99Qty in Cart: 0Quantity:Price:$932.99Subtotal: -
Eagle SBC 4340 Forged Crank - 3.750 Stroke 435337505700
EAGLE
$898.99A forged crank is the foundation of a reliable, high-RPM Small Block Chevy build. The Eagle SBC 4340 delivers the strength and precision needed to handle aggressive cam profiles, nitrous systems, and forced induction without compromise. With internal...EAG435337505700- SKU:
- EAG435337505700
- Availability:
- Ships Same Business Day
- Weight:
- 55.35 LBS
- MFG Part #:
- CRS435337505700
$898.99Qty in Cart: 0Quantity:Price:$898.99Subtotal: -
Eagle SBF 4340 Forged Crank - 4.1700 Stroke 435241706200
EAGLE
$961.99A quality forged crankshaft is the foundation of any reliable high-performance engine build. The Eagle SBF 4340 Forged Crank delivers the strength and precision needed to handle increased boost, higher RPM, and sustained power delivery without...EAG435241706200- SKU:
- EAG435241706200
- Availability:
- Ships Same Business Day
- Weight:
- 61.90 LBS
- MFG Part #:
- CRS435241706200
$961.99 -
Eagle SBF 4340 Forged Crank - 4.170 Stroke 435141706200
EAGLE
$961.99Built from 4340 forged steel, this Eagle crankshaft delivers the strength and reliability demanded by serious small block Ford builders pushing high RPM and boost levels. The 4.170 stroke provides the displacement and torque characteristics you need...EAG435141706200- SKU:
- EAG435141706200
- Availability:
- Ships Same Business Day
- Weight:
- 61.75 LBS
- MFG Part #:
- CRS435141706200
$961.99 -
Eagle SBC 4340 Forged Crank - 3.750 Stroke 435037505700
EAGLE
$930.99If you're building a Small Block Chevy engine that needs to handle serious RPMs and sustained power, a quality forged crankshaft is non-negotiable. The Eagle SBC 4340 Forged Crank delivers the strength and precision required for high-performance...EAG435037505700- SKU:
- EAG435037505700
- Availability:
- Ships Same Business Day
- Weight:
- 55.90 LBS
- MFG Part #:
- CRS435037505700
$930.99Qty in Cart: 0Quantity:Price:$930.99Subtotal:
