Summit Racing™ Forged Crankshafts

4.1 out of 5 stars 10 Customer Reviews

Summit Racing™ forged crankshafts offer maximum strength and the best value for your dollar! Our crankshafts are non-twist forged from certified 4340 steel. They are put through several stages of heat-treatment, and then stress-relieved and shot-peened to provide the strength and reliability you demand for your high performance application. Each journal is micro-polished and a .125 in. radius is used for increased strength. Summit Racing™ forged crankshafts help you get the most in value and performance.

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Summit Racing™ Forged Crankshafts SUM-BBC425063851

Gen. 4 BB Chevy Forged Steel Crank, 4.250 stroke, Two Piece Rear Seal, Req's Narrowed Rod Bearings, Lightened holes, Nitride, 6.385 in. Rod

Part Number: SUM-BBC425063851

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-MOP3404000

SB Mopar 340 Forged Steel Crank, 4.000 stroke, 6.123 in. Rod, May Req. Heavy Metal, Lightning Holes on Rod Journals, Narrowed Rod Bearings Req.

Part Number: SUM-MOP3404000

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-SBC35037502P

SB Chevy Forged Steel Crank, 3.750 Stroke, 1967-86 Blocks with 2-pc. RMS, Lightened, Nitride, Lightened and Bullnosed, Designed for 6.000 in. Rod

Part Number: SUM-SBC35037502P

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-180LS400024

Chevy LS 4340 Forged Steel Crankshaft, 4.000 stroke, 24X Reluctor, Lightened, Nitride Hardened, Narrowed Rod Bearings Req.

Part Number: SUM-180LS400024

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-SBF351W4000I

SBF 351 Windsor 4340 Forged steel crank, 4.000 in. stroke, 6.200 rod, Nitride Hardened, Internal Balance, Req. Narrowed Rod bearings

Part Number: SUM-SBF351W4000I

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-MOP3603580

SB Mopar 360 Forged Steel Crank, 3.580 stroke, 6.123 in. Rod, May Req. Heavy Metal, Lightning Holes on Rod Journals, Narrowed Rod Bearings Req.

Part Number: SUM-MOP3603580

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-SBF3023000E

Summit 4340 Forged Crankshaft, SBF Windsor, 3.000 in Stroke, 28 oz. Balancer, Narrowed Rod Bearings, 1.375 Pilot Bearing, Designed for 5.090 in. Rod

Part Number: SUM-SBF3023000E

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-SBF3023400

SB Ford Windsor 4340 Forged Steel crank, 3.400 stroke, 5.400 in. Rod, 28 oz. Balancer , Req's Narrowed Rod Bearings, one or two piece rear seal

Part Number: SUM-SBF3023400

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-SBC4004000

SB Chevy Forged Steel crankshaft, 4.000 Stroke, 400 Mains, 2 Piece Rear Seal, Req. Narrowed Rod Bearings, Lightened, Nitride, 6.000 in. Rod

Part Number: SUM-SBC4004000

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-BBF460415067

BB Ford 460 Forged Steel crank, 4.150 Stroke, Designed for 6.700 in. Rod, Nitride Hardened, Straight Shot oiling, Req's narrowed Rod Bearings

Part Number: SUM-BBF460415067

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-SBC4003750

SB Chevy Forged Steel crankshaft, 3.750 Stroke, Two Piece Rear Seal, Req. Narrowed Rod Bearings, Lightened, Nitride, Designed for 6.000 in. Rod

Part Number: SUM-SBC4003750

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-MOP34033106

SB Mopar 340 Forged Steel Crank, 3.580 stroke, 6.123 in. Rod, May Req. Heavy Metal, Lightning Holes on Rod Journals, Narrowed Rod Bearings Req.

Part Number: SUM-MOP34033106

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

Summit Racing™ Forged Crankshafts SUM-SBF3023000I

SB Windsor 4340 Forged crank, 3.000 in. stroke, 5.400 in. Rod, Internally Balanced, Req's Narrowed Rod Bearings, one or two piece rear main seal

Part Number: SUM-SBF3023000I

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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Estimated Ship Date: Monday 12/8/2025

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