Namura ATV Piston Ring Set 71.45mm for Yamaha YFB250 TIMBERWOLF 2WD 92-99 SKI-DOO-MX-Z-BLAIR-MORGAN-SPECIAL-EDITION-2003 map support at this time

map support at this time is limited for bikes modified this heavily

2005 Ski-Doo MXZX 440 Racing Liquid Cooled (453cc engine)

1979 Yamaha Excel 540 (EC540)

4 - Bushings - (part 5 in diagram)

Part Number: 152923

Namura ATV Piston Ring Set 71.45mm for Yamaha YFB250 TIMBERWOLF 2WD 92-99 SKI-DOO-MX-Z-BLAIR-MORGAN-SPECIAL-EDITION-2003 map support at this timeOften overlooked and unglamorous, they are an essential part of piston performance, engine efficiency, and durability. The materials used in the manufacturing of piston rings are one of the most critical factors in their performance. Namuras rings are designed specifically for their application. The type of cylinder sleeve, sleeve coating, size of the engine, and the stroke (2 or 4) all play a role in determining the composition best suited for the