Forged Standard 9:1 Compression Piston Kit - Wiseco K1660 - Evolution Sportster 1988+

Wiseco #: K1660

Wiseco piston set is standard size and has 9:1 compression. Piston set includes X rings 2 wrist pins and 4 circlips. Pistons are forged from a 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.

Measurements:

• Piston Size: 3.4965

Fitment:

Installation instructions (PDF)