I broke the ring on my #4 cylinder. I have the 225 with silvo-o-lite slugs. I called a place to order a new set of rings just now and they want to know what size the grooves are, I have no idea. Anyone here have a clue?

The ones I installed way back when were Speed pro Moly rings, amazing that this little slant is tearing up rear ends, tires and now moly rings.

Help?

your best bet is to get a caliper or some feeler guages and measure it out. sorry I couldnt help more