This EVO case boring tool takes all the guesswork out of boring the EVO style case (H-D(R) or aftermarket). engine case cylinder spigot bore. Stock 80" EVO has a 3.5" cylinder bore. Tool will bore any EVO style engine case with stock bolt pattern, up to 3.8125".
JIMS USA 1409 Case Boring Evolution Tool
- No.1409 - Use on 1984-99 EVO style engine cases.
- Bore from stock bore size to 3.8125" bore size.
- Will work with aftermarket engine cases that utilize stock location of cylinder stud holes, and overall case widths.