Vertex Piston Question

FFRDave

New member
A few months ago, I bought a Vertex piston for my Gas gas.

I knew enough to get the right letter designator for my cylinder (There are A, B, & C type cylinders), but now I have forgotten which side the little triangle goes on. There is a triangle etched into the dome of the piston near the edge.

Does the triangle point to the front or rear (exhaust or intake) ?
 
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