Crankcase & Bottom End

56 products

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

$4,736.99

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 ...

$4,276.99

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...

Sold Out

$4,366.99

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

JIMS

$485.99

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. ...

JIMS

$370.99

* 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

DAYTONA JAPAN

$775.99

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

$752.99

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...

$6,410.99

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 Softail parts is growing, and the...

DAYTONA JAPAN

$1,043.99

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...

$517.99

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...

$337.99

Features & Benefits:- * Fits Softail, Dyna & Touring 2003-2006 Left Hand Case. * Fits Softail 2000-2006, Dyna & Touring 2003-2006 Right Hand Case. * Sold Each. * Replaces OEM # 24604-0...

$277.99

Features & Benefits:- * Sold Each. * Replaces OEM # 24004-03B & 24605-07 Proudly Made in the USA by S&S Cycle ! MFR PART No: 310-0593 ROLLIES PART No: SS310-0593

EASTERN MOTORCYCLE PARTS

$272.99

Features & Benefits:- * Kit includes 2 x Thrust Washer (OEM#8972), 1 x Bearing (OEM#34605-07), 1 x Retaining Ring (OEM#35114-02) & 1 x Bearing Race (Not sold Separately) * Replaces OEM # 2...

$4,273.99

Features & Benefits:- * Includes new Sprocket Shaft Race for OEM type Main Bearing. * Replaces the Stock Crankshaft in 96ci,103ci & 110ci Engines. * OEM style Tapered Wristpin Ends allow u...

$4,046.99

Features & Benefits:- * Includes new Sprocket Shaft Race for OEM type Main Bearing. * Replaces the Stock Crankshaft in 96ci,103ci & 110ci Engines. * OEM style Tapered Wristpin Ends allow u...