Wisecos Garage Buddy complete engine rebuild kit offer everything you need for a bottom and top end rebuild with everything included in one box. Wiseco crankshafts are designed completely by in-house engineers, who determine all assembled dimensions, clearances, materials, and specifications. Garage Buddy kits come with a Wiseco standard forged piston, which offers stock compression and more reliability and longevity, thanks to the benefits of the forging process. Includes: Crankshaft assembly, OEM quality main bearings, All engine gaskets, seals, and O-rings, Wiseco standard series forged piston kit (piston, ring(s), pin, clips), Small end bearing (for two-strokes), Cam chain (for four-strokes), and Hour meter with mounting bracket and hour meter decal. Fits: Yamaha YZ250F 2005-2007, with 77mm Piston Bore