37mm Cylinder & Piston Ring Kit for MS170 2‑Mix — Fits 1130-020-1212 / 1130-030-2014, Restores Compression for Firewood & Pruning

Replacement 37mm cylinder and piston ring kit compatible with MS170 2‑Mix chainsaws. This kit replaces part numbers 1130-020-1212, 1130-030-2014, 1130-034-3007 and 1139-034-1500 (confirm your saw is the 2‑Mix version before ordering). Installing this kit brings back lost compression, improves throttle response and restores power to MS170 saws used for firewood cutting and yard pruning.

The components are manufactured from quality materials intended to provide long service life under typical homeowner and light farm conditions. Designed for installation during a top-end rebuild, the kit can be fitted with moderate mechanical ability using standard small-engine tools. Ideal for homeowners and DIY users who prefer to refurbish a worn MS170 2‑Mix rather than replace the saw.