Brand new Hyway big bore POP UP 57mm cylinder/piston kit. Fits Husqvarna chainsaw models 390 390xp 385 385xp and Jonsered chainsaw models 2188 2186.

The kit includes Nikasil plated 57mm cylinder, POP UP piston with 2 ring slots, 2 rings, wrist pin, circlips, and Oregon spark plug. 
Great quality kit made by Hyway that comes with 1 year warranty.
*Please note: some slight crankcase grinding is required for piston clearance on this big bore kit
These pop up pistons are impressive and normally add at least 10 psi compression over the standard flat top pistons.
We are a U.S. seller and you will get your parts quickly!