Your opinion please for WR 400 1985 !!!

i was under the impression if it had the extra bolt hole by the kicker it was AL? ill tell you one thing, you can tell by their weight. i have a bunch of covers tho to compare.

looks al to me...likely wouldnt look like that if it were mag either.

I can't tell from that section. The 87-88 has the bumper with that tiny allen type fastener through them. They also have a steel sleeve in the shifter and kicker hole and the clutch cavity is bigger. The aluminum is significantly heavier, I bought a four stroke case half not paying attention and it sure is noticeable the weight difference. I have no heavier clutch covers. I won't argue that such a thing has been produced I just think that it came on a new machine is unlikely due to what I have accumulated. I file off some shavings with a coarse file and then us an oxy propane or oxy acetylene tiny flame.

Thanks Fran, I will try it so that I know.

I should mention that the cover doesn't feel any lighter than any other cover, and yes it does have the bump rubber (split, I will replace) as you mentioned Fran. I don't suspect that this one is the original, I imagine that it was replaced at some time.
Tony.