Crankcase & Bottom End - 1936-99

24 products

Shop the range of aftermarket motorcycle engine products at Pro Class Custom Parts.

$612.99

Features & Benefits:- * Meets or exceeds OEM specifications * Come completely fitted and ready to install * Complete set includes a two-hole crankpin, aluminum retainers, bearings, nuts and fo...

DAYTONA JAPAN

$607.99

Features & Benefits:- * Meets or exceeds OEM specifications * Come completely fitted and ready to install * Complete set includes a two-hole crankpin, aluminum retainers, bearings, nuts and fo...

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DAYTONA JAPAN

$606.99

Features & Benefits:- * Meets or exceeds OEM specifications * Come completely fitted and ready to install * Complete set includes a two-hole crankpin, aluminum retainers, bearings, nuts and fo...

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DAYTONA JAPAN

$598.99

Features & Benefits:- * Meets or exceeds OEM specifications * Come completely fitted and ready to install * Complete set includes a two-hole crankpin, aluminum retainers, bearings, nuts and fo...

JIMS

$454.99

Kit Includes: * 1 – 24006-80/83, Pinion shaft * 1 – 2196, Metered oil jet screw * 1 – 24016-80, Flywheel side nut * 1 – 2187, (HD # 11218), Flywheel side key * 1 – 2480, (HD # 23985-54), Pinion ge...

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JIMS

$456.99

* Made from 52100 aerospace-quality Timken bearing stock * Sold as a set * Made in the U.S.A Kit includes: * 1 – 24006-73, Pinion shaft * 1 – 24023-36, Flywheel side nut * 1 – 24023-54, Pinion si...

JIMS

$428.99

Features & Benefits:- * Machined from solid bronze bar stock. * Hold concentricity to less than .0002″. * Includes Sprocket Shaft # JM-23909-80. * Includes Sprocket Side Nut # JM-24003-55. * F...

JIMS

$395.99

These American made Torrington rod bearing sets consisting of three packaged bearings with 16 rollers in steel cages. They will retro fit back to 1941. They are available in a standard size only. ...

$351.99

Features & Benefits:- * Includes standard size crankpin, pinion oil pump key and nut * Replaces OEM # 23961-80 * Made in the U.S.A. Tech Tips:- Fitment Note: Torque crankpin nuts to HD specs 1...

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$351.99

Features & Benefits:- * Made in the USA * 1.249″ * Replaces OEM # 23961-41 & 23966-54A Tech Tips:- * Torque crankpin nuts to H-D specs 180-210 ft/lbs for both OEM & S&S forged flyw...

JIMS

$322.99

* All ground diameters are concentric to within .0003″ to simplify flywheel trueing and rebuilding * Constructed of only domestic steel * Replaces OEM # 24006-58 * Made in the U.S.A. MFR PART No...

JIMS

$302.99

* Single Cam Models ONLY Use With: * Nuts x 2 x SS34-2104 * Key x 1 SS50-1009 * Made in the U.S.A. MFR PART No: 23974-873 ROLLIES PART No: JM-23974-873

JIMS

$274.99

* Sold each * Made in the U.S.A. * Replaces OEM # 24599-93 MFR PART No: 24599-58B ROLLIES PART No: JM-24599-58B

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JIMS

$274.99

* Sold each * Made in the U.S.A. * Replaces OEM # 24599-58A MFR PART No: 24599-58A ROLLIES PART No: JM-24599-58A

$212.99

Features & Benefits:- * Genuine Timken Bearing. * Left Hand Crank Case Bearing. * Replaces OEM # 9028 Proudly Made in the USA! MFR PART No: 31-4013 ROLLIES PART No: SS31-4013