THE DUKE'S PERFORMANCE COATED POP UP PISTON FITS STIHL MS391 49MM 372 tool or accessory 1135-120-0601

tool or accessory 1135-120-0601

tool or accessory QUALITY PISTON AND RING SET

GLASS FIBER REINFORCED

· SRM-261T S/N: S81413001001 - S81413999999-->Engine

DOES NOT FIT EARLIER MODEL K760 SAWS

THE DUKE'S PERFORMANCE COATED POP UP PISTON FITS STIHL MS391 49MM 372 tool or accessory 1135-120-0601THE DUKE'S SAW SALVAGE MOLYBDENUM DISULFIDE COATED PISTON. LESS OVERALL FRICTION AND CYLINDER WALL WEAR. MOLYBDENUM DISULFIDE IS COMMONLY KNOWN AS "MOLY" OR "MOS2." AWESOME QUALITY PISTON WITH THE STIFFER CAST IRON RINGS AND BEST QUALITY PIN CLIPS. The moly coating is seen as a sacrificial lubricant and creates a surface that is slicker than the traditional bare aluminum. What this creates is a lower friction surface overall and as long as the coating