S&S Cycle 92-99 BT w/ 4-1/8in Bore Small Diameter Flywheel Special Application Crankcase
Designed for high performance engines with cylinder bores between 4" and 4 3/8".
- A ported breather passageway and 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 95"
- Relocated cam chest oil pick-up increases gear case scavenging and virtually eliminates oil carry-over at sustained high speeds
- Cam chest is moved outward .250" to allow crankcases to handle large cylinder bore sizes
- Machined to accept the stock oil filter assembly used on 1992-'99 big twins
- Fits: 1984-'99 big twins with 4" bore and over
- Fits: S&S 4" bore: V100, V107, V113, V107T
- Fits: S&S 4 1/8" bore: V124, V111, V117
- Clearanced for strokes as long as 5"
- Fits: S&S 4 3/8" bore: V126
