02-04 Yamaha YZ 125 58mm 144cc Athena Big Bore Cylinder Crank Motor Rebuild Kit

Athena 58mm Complete 144cc Big Bore Motor Rebuild Kit! This is the best and most reliable rebuild kit on the market! Fits Yamaha YZ125 2 Stroke Dirt Bikes. 58mm 144cc Nikasil Athena Big Bore Cylinder.

Athena 58mm Coated Piston Kit (Includes, Piston, Pin, Rings & Clips). Hotrods Heavy Duty Crank Shaft. Hotrods Heavy Duty Main Bearings. Bottom End Oil Seals Kit.

This is a bolt on kit.

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