I just bought a Wossner for my 18 Beta 300RR. Beta changed to a domed piston from flat piston this year. I don?t think $300 for a top end kit is fair, this one cost $150. Here?s some pics. Checked measurements w/ an od mic all were spot on. Received a flat top pro-x that was claimed to be for an 18. It?s measurements were sloppy at best compared to the Wossner w/ skirt .02mm oversized from diameter listed on box. This Wossner is a class act with good machining inside to lighten it up. No machining inside of the pro-x.
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