Stihl MS390 49MM Forcetek Nikasil Plated
Cylinder No. 1127-020-1216. This is a big bore kit for the MS390 Stihl chainsaws. If you have a 46MM or a 47MM this kit will work for you and will give you more power! This cylinder does have a hole for the decompression valve. Replaces Stihl chainsaw part number 1127-020-1216.