I;ve never replaced a piston before but had the service manual on hand. The Wiseco piston was packaged in a nice felt bag and had a very clear instruction booklet. I used my service manual for specs and had to file a little off the ring ends to get the minimum ring end gap. I'd buy another Wiseco for sure!
Wiseco 2-Stroke Piston
- 5 Reviews
- 16 Questions
Wiseco leads the performance aftermarket by producing the highest quality forged pistons in the U.S.A. Wiseco is unique because they forge all of their own pistons in-house, and produce all of their own forge tooling in the U.S.A. This allows Wiseco to control all aspects of their manufacturing process from raw bar to skirt coating on the finished parts.
Extreme racing conditions demand the strength and toughness that only forged pistons can offer. Compared to cast pistons, forgings are tougher and more durable, and will stand up to the abuse that high performance motorsport applications require. Most castings are brittle, have no grain structure and tend to fail catastrophically when the material yield strength is exceeded. Forgings have condensed grain that is aligned to the features of the part, which produces higher mechanical properties, and resistance to impact and fatigue. Each forging is designed to optimize the strength-to-weight ratio, and maximize performance.
- Much stronger than stock.
- Tight tolerances for quiet running.
- More hours with peak performance between piston changes.
- All pistons include rings, wrist pin and circlips.
Note: Image is for reference ONLY, actual contents will vary based on fitment.
Saw the Wiseco reps at the Hi Point National. Could'nt thank them enough for helping to keep my 1978 RM125 running strong.
Replaced Top end on a PW50. Cylinder, Cylinder head, pistion, rings, circlips, gaskets, & new nuts.All parts came in within 5 days. Everything matched up perfectly. I have done plenty of business with Motosport over the years. They have good prices & parts & service are excellent!
Wiseco pistons are lighter, produce more power, last longer, and are cheaper than OEM. Using the Wiseco kits is a great way to go all the parts in one box! Take your time setting the ring gap thats as technical as it is!!! On a new bike as soon as it needs rings I swap the whole top end set, keeps it fresh with new with reliable parts.
Consult your service manual to determine the correct size piston with the clearances required. If you need more help, consult a local service or machine shop to help you.
You will need to consult the machine shop to tell you which size of piston will fix the issues with your cylinder.