Wiseco PK1168 66.40 mm 2-Stroke Motorcycle Piston Kit with Top-End Gasket Kit, Silver
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Two rings, to be exact. Mine was 97 cr 250, but I'm not sure what year it was. When I replaced the stock piston, it made a huge difference.
Everything you'll need to replace your top end is included.
That is dependent on the type of bicycle you select. There are two of them in my case. Before adding to cart, you must fill out the model information.
Yes, it has a 66 bore.
Selected User Reviews For Wiseco PK1168 66.40 mm 2-Stroke Motorcycle Piston Kit with Top-End Gasket Kit, Silver
It was a perfect match. If you're doing a full race-inspired build or simply need to replace a stock top end, forged pistons and rings are the way to go. The money was well spent. Don't worry, I took care of the homework. Wiseco kits start at $209 for this exact kit. So my advice is to buy the kit, save some money, and then buy some new reeds with the money you saved.
Excellent product.
The new slave cylinder is a perfect match.
There were no surprises and the fit was perfect.