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
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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.