Description
If you’re building a high-performance Twin Cam engine and need cases that can handle increased displacement and aggressive cam profiles, S&S Cycle’s 31-0181A offers the strength and clearance you demand. These CNC-ported replacement cases eliminate weak points in stock crankcases while maintaining full compatibility with your existing H-D components—no fabrication surprises. Whether you’re running a 5-inch stroke and .675-inch lift cams, these domestically-manufactured cases deliver the reliability professional builders trust.
- Twin Cam “A” replacement cases
- Stock H-D chassis compatible
- Carb and EFI applications
- Greater overall strength
- Timken-style sprocket bearings
- Supports up to 5″ strokes
- O-ring sealed passages
- Clearance for .675″ lift cams
- S&S breather reed valve
- Eliminates oil carry-over
- Stock transmission compatible
- Bolt-to-stock primary
- Stock charging system compatible
- Made in U.S.A.
- Professional installation required
