BannedCR500Riders.com

Posted: **May 5th, 2009, 9:01 am**

I have a ProX, it measures 3.520" and my cylinder is 3.525". Does anyone have the measurement of a new one? Please say what brand it is.

Posted: **May 6th, 2009, 3:45 pm**

I got an answer from Roostus. A 89.5 Vertex is 3.521".

I Need The Exact Diameter of a 89.5mm Piston