Forged.020 9:1 Compression Piston Kit - Wiseco K1662 - Evolution Sportster 1988+

Wiseco #: K1662

Wiseco piston set is.020 oversize and has a compression of 9:1. Piston set includes Hasting X rings 2 wrist pins and 4 circlips. Pistons are forged from high silicone alloy.

**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)