STIHL CHAINSAW PARTS 029 039 MS290 MS310 MS390 CYLINDER AND PISTON KIT BIG BORE
49MM CYLINDER AND PISTON KIT FOR STIHL 029 039 MS290 MS310 MS390. 49MM BIG-BORE INCREASE MORE POWER TO YOUR 029 MS290 MS310. STANDARD BORE SIZE FOR 039 MS390. PISTON 49mm. PISTON RINGS. CYLINDER WITH DECOMPRESSOR THREADED HOLE.