Brand new Hyway Nikasil Big Bore 56mm cylinder and POP UP extra compression piston kit. Fits Stihl chainsaw models MS660 and 066.
The kit includes Nikasil plated cylinder, POP UP piston, Caber piston rings (made in Italy, these are the best rings you can get), wrist pin, circlips, gaskets, and Oregon spark plug.
Do you want to add power to your saw without spending money on expensive porting? This POP UP extra compression piston from Hyway will generally add at least 10 psi compression over the stock design piston. More compression equals more power. Caber piston rings are the best you can get and ensure reliable performance.
New casting with larger ports.
1 year warranty against defects on this Hyway cylinder kit.
Wolf Creek Saw Shop is a proud U.S. seller, we ship within 1 day of receiving payment, and you will get your parts quickly!