Ductile Split Groove Piston Rings (48mm x 1.2mm) for Stihl 034 Super/036/MS 360 by NWP. $8.99. This piston ring design offers less friction resulting in less heat transfer and better performance. The split groove also helps retain lubrication. We recommend using a piston ring clamp set 10429 when changing piston rings. These rings are 48mm in diameter and 1.2mm thick. Fits the following chainsaws: Stihl 034 Super, 036, MS 360 Replaces Part Number 1125 034 3001. Save 25%!