Engine Crankshafts | Summit Racing

Wiseco Crankshaft Kits

Wiseco crankshaft kits contain everything you need to complete your rebuild for a job done right, the first time! These crankshafts, connecting rods, bearings, and bottom end gaskets meet or exceed OEM specifications for the maximum horsepower and torque that every rider wants. Features include: * Double forged connecting rods feature shot peening, oil slots, and coated bronze thrust washers * Bottom end gasket kits are made from premium materials, exceeding OEM standards for an exceptional seal between critical mating surfaces * High-quality main bearings provide maximum life and smooth operation at high rpm * Surface treatment prevents corrosion and pitting, while adding strength to the assembly * Bushed top end of rod retains oil and eliminates pin galling * Case-hardened bottom end rod bores optimize bearing running surface * Hot rolled steel, case-hardened crank pin bearings * Caged needle roller bearings provide the highest possible rpm

5.0 out of 5 stars ( 2 )

$390.97

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$516.99

Scat Forged Standard Weight Crankshafts

Scat forged standard weight crankshafts are designed for street or race engines with substantially increased horsepower. These crankshafts are precision-ground, heat-treated, shot-peened, inspected, and micro-polished for superior tolerance control. Scat crankshafts are also nitride-hardened for superior wear resistance, have straight-shot and chamfered oil holes, and feature lightening holes in all rod throws. They also have a large radius on all journals for improved strength and wear resistance. Scat forged standard weight crankshafts are available in dozens of sizes and configurations for fitment on vehicles spanning seven decades.

4.44 out of 5 stars ( 25 )

$965.99

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$1,329.99

Callies Apex Crankshafts

Utilizing the latest in computer aided solid modeling and CNC machining centers, Callies offers the best designed, highest quality crankshafts, connecting rods, and camshaft inventory available on the market today. Callies understands not everyone has the need or budget for a Magnum or billet crankshaft, but still may want a product with more to offer than their Compstar line. Callies went to work for a solution, which culminated in the creation of their Apex Series of crankshafts. The Apex crankshafts are made on the same forgings that Callies uses to make their Magnum Series but are machined by the supplier that makes the Compstar line. Like Compstar, the Apex crankshafts are finish sized and fully inspected in-house. This results in the best bang-for-your-buck crankshaft on the market. Callies takes pride in staying ahead of the competition with the latest high tech design and manufacturing advantages of their products. Callies Apex LS/LT standard features include: * Made on Callies proprietary Magnum forging * Ultra-pure, premium 4340 material machined by Callies vetted and reliable Compstar supplier * Machined by Callies vetted and reliable Compstar supplier * Nitrided for optimal hardness and wear resistance * Every crankshaft is finished and inspected in-house at Callies Limited stroke and pin size combinations * Limited stroke and pin size combinations

Not Yet Reviewed

$2,493.00

Howards Cams Reaper Billet Steel Crankshafts

Howards Cams Reaper billet steel crankshafts are more robust than most because they have a uniform and non-stress grain structure. These cranks start with E4340 aircraft-quality bar stock material and are precision CNC-machined. They feature bearing journals with large fillet radii (chamfered bearings required) and weight-reducing holes in all rod journals. Reaper crankshafts are available for fitment in a variety of big block applications. Additional product details: * Computer-designed center counterweights for reducing bearing loads and improved balance * Fully stress-relieved and shot-peened * Nitrided for superior wear-resistance * Rod and main bearing journal surfaces are micro-polished * Double keyways for dampers

Not Yet Reviewed

$1,659.99

Manley Pro Series Crankshafts

Manley Pro Series crankshafts can make your short block bulletproof. They feature forged 4340 construction and undergo a multi-step heat-treatment process and are then nitrided for added strength. The crankshafts are stress-relieved, shot-peened, and magnafluxed. Manley Pro Series crankshafts have micro-polished large .125 in. radius journals, gun-drilled mains, and lightened rod journals for weight reduction. The counterweights are fully profiled and they are designed for internal balancing.

4.89 out of 5 stars ( 9 )

$873.46

Eagle Forged 4340 Steel Crankshafts

Eagle forged 4340 steel crankshafts are great for high performance applications. They feature non-twist forging, undergo a multi-stage heat-treatment process, and are stress-relieved and shot-peened. These cranks are X-rayed, magnafluxed, and sonic-tested, so you know you're getting a top-quality piece. Each crankshaft has chamfered oil holes for improved oiling, a .125 in. radius on rod and main journals for increased strength, and the journals are precision-ground and micro-polished to less than 5 R.A. A target bob weight of +/- 2 percent greatly reduces balancing time. Many options are available; order the model recommended for your year/make and engine application.

4.46 out of 5 stars ( 52 )

$1,034.99

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$1,144.99