Forged.030 10.5:1 Compression Piston Kit - Wiseco K1688 - Evolution Sportster 1988+

Wiseco #: K1688

Wiseco piston set is.030 oversize and has a compression of 10.5:1. Set includes Hasting X rings.

**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:

• Length: 11 inches
• Width: 5-9/16 inches
• Mount Hole Distance: 6-1/4 inches

Fitment:

Installation instructions (PDF)