01-04 Yamaha YZ125 YZ 125 58mm 144cc Athena Big Bore Cylinder Crank 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. Years 2001 2002 2003 2004 ONLY. (Check Motor Vin To Confirm Year Before Ordering). 58mm 144cc Nikasil Athena Stock Bore Cylinder. Athena 54mm Coated Piston Kit (Includes, Piston, Pin, Rings & Clips). Wiseco Heavy Duty Crank Shaft.

Wiseco Heavy Duty Main Bearings. Bottom End Oil Seals Kit.