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Crankcase & Bottom End

56 products

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

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$4,094.99

$4,094.99

Features & Benefits:- * Heat-treated 4140 material is harder and 114% stronger than stock * Harder material, eliminates thrust washer * Larger 1.671″ diameter crankpin * Designed with increas...

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$4,099.99

$4,099.99

Features & Benefits:- * Requires the Timken Bearing Sprocket Shaft Crankcase Sleeve & Tool Kit # JM-959. * Requires Timken Bearing Assembly # SS31-4013. * 3 Piece Assemblies. Tech Tips:- *...

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$4,030.99

$4,030.99

Note: This S&S 4-1/2″ stroke flywheel assembly when used with 3-7/8″ cylinders creats 106 cubic inch’s 1. Purchase S&S 3-7/8″ piston kit # SS92-1210 & bore your current cylinders Fea...

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$4,028.99

$4,028.99

Features & Benefits:- * Also Fits Dyna 1999-2005. * Also Fits Touring 1999-2006. * 2003-2006 motors can be upgraded to the stronger Timken Crankcase Bearing. * Heat-treated 4140 material is ha...

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$1,747.99

$1,747.99

Features & Benefits:- * Includes Oil Pan. * Allows the installation of S&S engine or crankcase into Dyna 2006-2017. * Oil pickup tube routed to the rear of the oil pan for extended high ac...

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$982.99

$982.99

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

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$743.99

$743.99

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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$735.99

$735.99

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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$750.99

$750.99

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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$734.99

$734.99

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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$725.99

$725.99

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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$550.99

$550.99

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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$553.99

$553.99

* 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...

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$518.99

$518.99

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...

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$479.99

$479.99

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. ...

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