Crankshafts
Circle Track Crankshafts at JJ Motorsports
Convert piston motion into reliable rotational power with high-quality crankshafts from JJ Motorsports. Engineered for intense racing conditions, these forged steel cranks deliver exceptional durability and precision for Small Block Chevy, LS, and other engines in late models, modifieds, and street stocks, ensuring optimal torque and horsepower on demanding dirt ovals.
Shop trusted brands like Manley for 4340 forged options, Lunati for Voodoo series, Eagle for balanced cranks, and Scat Enterprises for high-stroke designs. Explore related categories such as Circle Track Crankshafts and Components for balancing plates or Circle Track Engines and Components for complete upgrades.
Top Circle Track Crankshafts
- 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.
- Manley SBC 4340 Forged Crank 3.480 Stroke 350 Mains 190310NB – Crankshaft 3.480 in Stroke Internal Balance Forged Steel 2-Piece Seal Each.
- GM LS 4340 Forged Crank 4.000 Stroke 70840001 – Crankshaft Voodoo 4.000 in Stroke Internal Balance Forged Steel GM LS-Series 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
-
SBC 4340 Forged Crank - 3.750 Stroke 4-400-3750-6000
SCAT ENTERPRISES
$944.99If you're building a Small Block Chevy engine for racing or high-performance street use, stroke is everything—and the SBC 4340 Forged Crank delivers the displacement gains you need without compromising reliability. The 3.750-inch stroke paired with...SCA4-400-3750-6000- SKU:
- SCA4-400-3750-6000
- Availability:
- Ships Same Business Day
- Weight:
- 59.65 LBS
- MFG Part #:
- 4-400-3750-6000
$944.99 -
SBC 4340 Forged Crank - 3.750 Stroke 4-400-3750-5700
SCAT ENTERPRISES
$944.99A forged steel crankshaft is the backbone of any high-rpm Small Block Chevy engine, and this 4340 unit is built to handle serious power without compromise. With a 3.750-inch stroke and internal balance design, you're getting a component engineered for...SCA4-400-3750-5700- SKU:
- SCA4-400-3750-5700
- Availability:
- Ships Same Business Day
- Weight:
- 59.30 LBS
- MFG Part #:
- 4-400-3750-5700
$944.99 -
SBC 4340 Forged Crank - 3.500 Stroke 4-400-3500-6000
SCAT ENTERPRISES
$944.99A forged crankshaft is the foundation of any reliable high-performance small block build. The SBC 4340 delivers the durability needed for sustained high-RPM operation, while the 3.500" stroke provides a proven geometry for balanced power delivery across...SCA4-400-3500-6000- SKU:
- SCA4-400-3500-6000
- Availability:
- Ships Same Business Day
- Weight:
- 59.00 LBS
- MFG Part #:
- 4-400-3500-6000
$944.99 -
SBC 4340 Forged Crank - 4.000 Stroke 4-350-4000-6000
SCAT ENTERPRISES
$944.99A forged 4340 steel crankshaft is the foundation of any high-revving Small Block Chevy engine that demands reliability under sustained load. This internally balanced unit eliminates the need for external counterweights, simplifying installation and...SCA4-350-4000-6000- SKU:
- SCA4-350-4000-6000
- Availability:
- Ships Same Business Day
- Weight:
- 57.30 LBS
- MFG Part #:
- 4-350-4000-6000
$944.99 -
SBC L/W 4340 Forged Crank - 3.875 Stroke 4-350-3875-6000-2
SCAT ENTERPRISES
$2,281.99A forged 4340 crankshaft is the foundation of any high-RPM small block build. If you're pushing your SBC past 6,000 RPM or building a forced-induction engine, a lightweight forged crank eliminates rotating mass and dramatically improves throttle response...SCA4-350-3875-6000-2- SKU:
- SCA4-350-3875-6000-2
- Availability:
- Ships Same Business Day
- Weight:
- 48.00 LBS
- MFG Part #:
- 4-350-3875-6000-2
$2,281.99 -
SBC L/W 4340 Forged Crank - 3.750 Stroke 4-350-3750-6000-2
SCAT ENTERPRISES
$2,477.99A forged 4340 crankshaft is essential for any serious small-block Chevy build pushing high RPM or forced induction. The Pro Comp lightweight design reduces rotational mass, improving throttle response and allowing your engine to rev faster while...SCA4-350-3750-6000-2- SKU:
- SCA4-350-3750-6000-2
- Availability:
- Ships Same Business Day
- Weight:
- 52.05 LBS
- MFG Part #:
- 4-350-3750-6000-2
$2,477.99 -
SBC 4340 Forged Crank - 3.750 Stroke 4-350-3750-6000
SCAT ENTERPRISES
$944.99A quality crankshaft is the foundation of engine reliability and power delivery—especially in high-revving Small Block Chevy applications where precision matters. This 4340 forged crank delivers the stroke length and internal balance needed to unlock...SCA4-350-3750-6000- SKU:
- SCA4-350-3750-6000
- Availability:
- Ships Same Business Day
- Weight:
- 57.00 LBS
- MFG Part #:
- 4-350-3750-6000
$944.99 -
SBC 4340 Forged Crank - 3.750 Stroke 4-350-3750-5700-L
SCAT ENTERPRISES
$944.99A forged crankshaft is the backbone of any high-revving Small Block Chevy engine build—it handles the violent reciprocating forces that cast cranks simply cannot tolerate. This 4340 forged unit delivers the strength and reliability required for serious...SCA4-350-3750-5700-L- SKU:
- SCA4-350-3750-5700-L
- Availability:
- Ships Same Business Day
- Weight:
- 56.60 LBS
- MFG Part #:
- 4-350-3750-5700-L
$944.99 -
SBC 4340 Forged Crank - 3.750 Stroke 4-350-3750-5700
SCAT ENTERPRISES
$944.99A quality crankshaft is the backbone of any high-performance Small Block Chevy build—it's the component that directly translates combustion pressure into usable horsepower and torque. This 4340 forged crank delivers the stroke length and internal balance...SCA4-350-3750-5700- SKU:
- SCA4-350-3750-5700
- Availability:
- Ships Same Business Day
- Weight:
- 61.00 LBS
- MFG Part #:
- 4-350-3750-5700
$944.99Qty in Cart: 0Quantity:Price:$944.99Subtotal: -
SBC F-43 Forged Crank - 3.500 Stroke 4-350-3500-5700-21LW
SCAT ENTERPRISES
$1,279.99If you're building a small block Chevy engine that needs to handle sustained RPM and load cycles, a quality forged crankshaft is non-negotiable. The SBC F-43 delivers the strength and balance required for reliable performance, whether you're prepping for...SCA4-350-3500-5700-21LW- SKU:
- SCA4-350-3500-5700-21LW
- Availability:
- Ships Same Business Day
- Weight:
- 47.10 LBS
- MFG Part #:
- 4-350-3500-5700-21LW
$1,279.99Qty in Cart: 0Quantity:Price:$1,279.99Subtotal: -
SBC F-43 Forged Crank - 3.500 Stroke 4-350-3500-5700-18LW
SCAT ENTERPRISES
$1,279.99If you're building or rebuilding a small block Chevy engine for serious performance, your crankshaft is non-negotiable—it's the backbone of your bottom end. The SBC F-43 Forged Crank delivers the stroke geometry and internal balance you need for reliable...SCA4-350-3500-5700-18LW- SKU:
- SCA4-350-3500-5700-18LW
- Availability:
- Ships Same Business Day
- Weight:
- 45.25 LBS
- MFG Part #:
- 4-350-3500-5700-18LW
$1,279.99 -
SBC F-43 Forged Crank - 3.480 Stroke 4-350-3480-5700-21LW
SCAT ENTERPRISES
$1,279.99A quality forged crankshaft is the backbone of any high-performance Small Block Chevy build—it directly impacts power delivery, engine longevity, and reliability under boost or high RPM stress. The SBC F-43 combines premium forged steel construction with...SCA4-350-3480-5700-21LW- SKU:
- SCA4-350-3480-5700-21LW
- Availability:
- Ships Same Business Day
- Weight:
- 47.30 LBS
- MFG Part #:
- 4-350-3480-5700-21LW
$1,279.99 -
SBC F-43 Forged Crank - 3.480 Stroke 4-350-3480-5700-20LW
SCAT ENTERPRISES
$1,279.99A quality crankshaft is the backbone of reliable high-RPM performance—and the SBC F-43 Forged Crank delivers the strength and precision needed for serious Small Block builds. Whether you're pushing higher boost levels, extending your rev range, or simply...SCA4-350-3480-5700-20LW- SKU:
- SCA4-350-3480-5700-20LW
- Availability:
- Ships Same Business Day
- Weight:
- 46.15 LBS
- MFG Part #:
- 4-350-3480-5700-20LW
$1,279.99 -
SBC F-43 Forged Crank - 3.480 Stroke 4-350-3480-5700-18LW
SCAT ENTERPRISES
$1,279.99If you're building or rebuilding a Small Block Chevy engine for serious performance, your crankshaft is the foundation of reliability and power delivery. The SBC F-43 Forged Crank delivers the stroke length and internal balance needed for consistent,...SCA4-350-3480-5700-18LW- SKU:
- SCA4-350-3480-5700-18LW
- Availability:
- Ships Same Business Day
- Weight:
- 44.55 LBS
- MFG Part #:
- 4-350-3480-5700-18LW
$1,279.99 -
SBC 4340 Forged Crank - 3.480 Stroke 4-350-3480-5700
SCAT ENTERPRISES
$944.99A forged 4340 crankshaft is essential for any serious Small Block Chevy build pushing toward high RPM and sustained power. This 3.480-stroke unit provides the internal balance and material strength needed for forced induction, nitrous, or naturally...SCA4-350-3480-5700- SKU:
- SCA4-350-3480-5700
- Availability:
- Ships Same Business Day
- Weight:
- 55.30 LBS
- MFG Part #:
- 4-350-3480-5700
$944.99 -
SBF 4340 Forged Crank - 3.400 Stroke 4-302-3400-54-2123-I
SCAT ENTERPRISES
$674.99A forged steel crankshaft is the foundation of any reliable, high-revving engine build. The SBF 4340 Forged Crank delivers the strength and precision needed for sustained performance in Small Block Ford engines, whether you're pushing higher RPMs on the...SCA4-302-3400-54-2123-I- SKU:
- SCA4-302-3400-54-2123-I
- Availability:
- Ships Same Business Day
- Weight:
- 52.55 LBS
- MFG Part #:
- 4-302-3400-54-2123-I
$674.99Qty in Cart: 0Quantity:Price:$674.99Subtotal: -
SBF 4340 Forged Crank - 3.400 Stroke 4-302-3400-5400-2123
SCAT ENTERPRISES
$908.99A quality forged crankshaft is the foundation of any reliable high-performance Small Block Ford engine. This 4340 forged crank delivers the strength and precision needed to handle aggressive power levels while maintaining the durability required for...SCA4-302-3400-5400-2123- SKU:
- SCA4-302-3400-5400-2123
- Availability:
- Ships Same Business Day
- Weight:
- 51.30 LBS
- MFG Part #:
- 4-302-3400-5400-2123
$908.99 -
SBF 4340 Forged Crank - 3.250 Stroke 4-302-3250-5400-2123
SCAT ENTERPRISES
$908.99A forged 4340 crankshaft is the foundation of a reliable, high-RPM engine build. Whether you're assembling a street performance SBF or a track-focused small block, this externally balanced crank delivers the durability needed to handle aggressive power...SCA4-302-3250-5400-2123- SKU:
- SCA4-302-3250-5400-2123
- Availability:
- Ships Same Business Day
- Weight:
- 50.30 LBS
- MFG Part #:
- 4-302-3250-5400-2123
$908.99 -
SBC T/S-3 4340 Forged Crank 3.750 Stroke H403756012T
HOWARDS RACING COMPONENTS
$933.99Building a high-displacement small block or pushing your existing SBC to the limit requires a crankshaft engineered for sustained power and reliability. This 4340 forged crank delivers the stroke you need for increased displacement and torque while...HRCH403756012T- SKU:
- HRCH403756012T
- Availability:
- Ships Same Business Day
- Weight:
- 25.00 LBS
- MFG Part #:
- H403756012T
$933.99 -
Chevrolet Performance SBC ZZ4 Crankshaft 3.480 Stroke 1pc Rear Main 12670965
CHEVROLET PERFORMANCE
$1,482.99If you're building or rebuilding a Small Block Chevy engine that demands reliability and consistent performance, a quality crankshaft is non-negotiable. The Chevrolet Performance SBC ZZ4 crankshaft delivers the stroke geometry and internal balance you...GMP12670965- SKU:
- GMP12670965
- Availability:
- Ships Same Business Day
- Weight:
- 65.00 LBS
- MFG Part #:
- 12670965
$1,482.99
