883cc Forged Conversion Piston Kit.020 Oversize - Wiseco K1657 - Evolution Sportster 1986+

Wiseco #: K1657

Wiseco piston set includes Hasting X rings 2 wrist pins and 4 circlips.

Piston set is.020 over sized and has a 9.5:1 compression. For a 3-1/2 inch bore. Pistons are forged from a high silicone alloy. 2009-UP XL 883 cylinders cannot be overboard to 1200cc. 2009-UP applications will require separate purchase of 1200cc cylinders to be used with piston kit. **Note: Run engine at moderate speeds for at least 500 miles avoiding excessive running in lower gears in order to properly break-in new pistons and rings.

Fitment:

Installation instructions (PDF)