Check the listing for details. Wiseco - PWR144-101 - Engine Rebuild Kit, 77.00mm Bore. Condition: New. Listed at 795.99 USD. A full engine rebuild is a serious job and requires a lot of parts to be replaced, especially in four-strokes. You have to think of bottom end bearings and seals, a crankshaft assembly, piston, rings, clips, wristpin, and the plethora of gaskets required for reassembly. If you’re doing this rebuild yourself, or having your local shop do the labor, chances are you don’t have a factory team budget to spend on parts. However, you know you want high-quality and durable parts, because you don’t want to find yourself doing this again anytime soon. You could source all the different parts you need from different places to find the best combination of quality and affordability. But, it can get frustrating when 6 different packages are coming from 6 different vendors at different times,.