Vertex Top End Piston Kit Bore - 77.00mm Compression Ratio - 13.5:1 Size - 76.9 VTKTC23259B-1. Vertex Top End Piston Kit VTKTC23259B-1. 2009 Kawasaki KX250F. In the event of product failure or defect, products are limited to the manufacturer warranty.
Great kit. The reason I gave 4 stars is because the gasket kit didn’t come with the 2 o rings you need for a 09 KXF 250. I had to order those and wait a couple more days to put together.