Crankcase Assembly with 3-1/2in. Bore – Black. Fits Big Twin 1992-1999.

Features & Benefits:-

* Wrinkle Black.

* Perfect for stock replacement & high performance applications.

* These crankcases offer some unique features.

* Besides being machined for a crank position sensor, they are also compatible with stock flywheel assemblies, primary covers, gearcovers and are clearanced for 38 amp alternator stators.

* Relocated cam chest oil pick-up increases gear case scavenging & virtually eliminates oil carry-over at sustained high speeds.

* Machined to accept the stock oil filter assembly used on Big Twin 1992–1999.

* A ported breather passageway & a machined breather window allows the air/oil mist to flow from the flywheel cavity to the cam chest of the engine with the least possible restriction.

* Crankcase venting can be achieved via two crankcase breathers, the cylinder heads, or both.

* We recommend using both crankcase breathers in engines larger than 95ci.

* Clearanced for strokes as long as 5 in..

* Compatible with stock 1984–1999 flywheel assemblies, primary covers, gearcovers, and clearanced for 38 amp alternator stators, making them perfect for stock replacement or high performance applications.

* Machined for installation of a crank position sensor.

* This allows the cases to be used in stock EFI applications

* Allows easy installation of S&S IST Ignition and VFI Fuel Injection.

* A plug kit is included for applications that do not use a crank position sensor.

* Upgrade on OEM # 24569-95 / 24571-92 / 24571-93 / 24572-92

Tech Tips:-

* Use 1992-1999 style oil pump.

* Machined for 1984-1999 alloy primary.

* Machined for stock or S&S EFI crank position sensor. Stock diameter only.

Proudly Made in the USA by S&S Cycle !

MFR PART No: 31-0055
ROLLIES PART No: SS31-0055