S&S CYCLE - 31-0047/Special Application Crankcase - Engine Case - +4.000" Bore - Special Application - Evolution Big Twin
Features
- Designed for high performance engines with cylinder bores 4.000"
- Cam chest is moved outward 0.250" to allow crankcases to handle large cylinder bore sizes
- Clearanced for strokes as long as 5.000"
- Relocated cam chest oil pick-up increases gear case scavenging and virtually eliminates oil carry-over at sustained high speeds
- Machined to accept the stock oil filter assembly used on '92-'99 Big Twins
- 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; S&S recommends using both crankcase breathers in engines larger than 95"
- Deck height is 5.875"
- Made in the USA
Note
- Machined for installation of a crank position sensor which allows the cases to be used in EFI applications and also 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.
- All S&S crankcases manufactured after June 1, '08 do not have case interlock groove and ring and do not use case alignment studs. Case mating surface is flat, and cases are aligned with alignment dowels.
Specs
| Product Name | Engine Case |
| Model | Special Application |
| Color/Finish | Natural |
| Units | Kit |
| Riding Style | Street |
Fitments
| 1999 | Harley-Davidson | FXR3 |
| 1999 | Harley-Davidson | FXR2 |
| 1999 | Harley-Davidson | FXSTB Night Train |
| 1998 | Harley-Davidson | FLTR Road Glide |
| 1998 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU |
| 1997-1999 | Harley-Davidson | FLSTS Heritage Springer |
| 1996 | Harley-Davidson | Tour Glide Ultra Classic FLTCU |
| 1995-1998 | Harley-Davidson | FXD Dyna Super Glide |
| 1995-1998 | Harley-Davidson | FXDS-Conv Dyna Convertible |
| 1995-1997 | Harley-Davidson | FXSTSB Bad Boy |
| 1994-1998 | Harley-Davidson | FLHR Road King |
| 1994-1996 | Harley-Davidson | FLSTN Heritage Softail Special |
| 1994 | Harley-Davidson | Tour Glide Classic FLTC |
| 1993-1998 | Harley-Davidson | FXDL Dyna Low Rider |
| 1993-1998 | Harley-Davidson | FXDWG Dyna Wide Glide |
| 1993 | Harley-Davidson | FLSTN Heritage Softail Nostalgia |
| 1993 | Harley-Davidson | Sport Glide FXRT |
| 1992 | Harley-Davidson | FXDB-D Dyna Glide Daytona |
| 1992 | Harley-Davidson | FXDC Super Glide Custom |
| 1990-1999 | Harley-Davidson | FLSTF Fat Boy |
| 1990-1993 | Harley-Davidson | FXRS-Conv Low Rider Sport Convertible |
| 1989-1997 | Harley-Davidson | FLHTCU Electra Glide Ultra Classic |
| 1989-1995 | Harley-Davidson | FLTCU Tour Glide Ultra Classic |
| 1989-1990, 1993 | Harley-Davidson | Low Rider FXRS |
| 1988-1999 | Harley-Davidson | FLSTC Heritage Softail Classic |
| 1988-1999 | Harley-Davidson | FXSTS Springer Softail |
| 1988-1993 | Harley-Davidson | FXRS-SP Low Rider Sport |
| 1987-1994 | Harley-Davidson | FXLR Low Rider Custom |
| 1987-1993 | Harley-Davidson | FLHS Electra Glide Sport |
| 1987 | Harley-Davidson | Softail Heritage Classic FLSTC |
| 1986-1999 | Harley-Davidson | FXSTC Softail Custom |
| 1986-1994 | Harley-Davidson | FXR Super Glide II |
| 1986-1990 | Harley-Davidson | FLST Heritage Softail |
| 1986-1987, 1995-1998 | Harley-Davidson | FLHT Electra Glide Standard |
| 1986 | Harley-Davidson | FXRD Sport Glide Grand Touring |
| 1985-1986 | Harley-Davidson | FXWG Wide Glide |
| 1985, 1987 | Harley-Davidson | FXRC Low Rider Chrome |
| 1985 | Harley-Davidson | FXEF Fat Bob |
| 1985 | Harley-Davidson | FXSB Low Rider - Belt |
| 1985 | Harley-Davidson | Electra Glide Standard FLHT |
| 1984-1998 | Harley-Davidson | FLHTC Electra Glide Classic |
| 1984-1993, 1999 | Harley-Davidson | FXST Softail Standard |
| 1984-1993 | Harley-Davidson | FLTC Tour Glide Classic |
| 1984-1992 | Harley-Davidson | FXRT Sport Glide |
| 1984-1988, 1991-1992 | Harley-Davidson | FXRS Low Glide |
| 1984 | Harley-Davidson | FXRDG Disc Glide |
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
General Safety Warning
Failure to follow manufacturer's recommendations and requirements can cause product failure resulting in serious injury or death. While effort has been taken in collecting accurate fitment information, LeMans Corporation accepts no liability for loss or damage resulting from errors or omissions.
Periodically cleaning of your wheels is necessary to maintain a high luster, especially 24K gold plated wheels these require extra care. Always clean using a mild dish soap and water such as Dawn and a clean microfiber cloth, to clean inside the hub and spokes use a soft horse hair paint brush. NEVER use any harsh cleaning compounds or waxes as the are abrasive and will remove the gold plating. During storage spray a light coating of WD40 on the wheels to prevent rusting.