Crankcase & Bottom End

57 products

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

Sold Out

$485.99

Installation kit for S&S Super Stock crankcase into 2007-2016 Touring models. Required to connect Super Stock crankcase to S&S oil pan. Includes formed oil line adapter, oil lines, fitting...

Sold Out

$4,545.99

Features & Benefits:- * Wrinkle Black. * Perfect for stock replacement & high performance applications. * These crankcases offer some unique features. * Besides being machined for a crank...

Sold Out

$5,541.99

These cases are designed to accept cylinders up to 4 1-2″, which is massive, & they have a case with a spigot bore of 4.695″ The demand for performance-based bagger parts is growing, and these...

$4,470.99

The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our ...

Sold Out

$4,331.99

Features & Benefits:- * The S&S Super Stock alternator style crankcases are perfect for stock replacement & for high performance applications. * Pre-clearanced for strokes up to &...

Sold Out

$4,038.99

Features & Benefits:- * 2003-2006 motors can be upgraded to the stronger “Timken” crankcase bearing. * Heat-treated 4140 material is harder & 114% stronger than stock. * Harder material, e...

$4,033.99

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 Feat...

DAYTONA JAPAN

$717.99

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

$708.99

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...

$261.99

Features & Benefits:- * Sold Each. * Replaces OEM # 24004-03B & 24605-07 Proudly Made in the USA by S&S Cycle !

$4,470.99

The Crankshaft is the heart of any performance engine and S&S Cycle has been perfecting the art for over six decades. Stronger, more durable, and trued to a spec others can only dream of, our ...

$4,092.99

Features & Benefits:- * Natural Aluminium Finish. * Perfect for stock replacement & high performance applications * These crankcases offer some unique features. * Besides being machined f...

JIMS

$490.99

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. ...

Sold Out

JIMS

$381.99

* Single Cam Models ONLY Use With: * Nuts x 2 x SS34-2104 * Key x 1 SS50-1009 * Made in the U.S.A.

Sold Out

DAYTONA JAPAN

$733.99

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...