OEM or aftermarket?

[Barbel Mick]

Gents, I've just been to book my 650 in for the valve check.
I mentioned to the man that I've heard there is a shortage of shims about at the moment but he said "That depends on if you want OEM or aftermarket". He has got a ready supply of shims on site but they won't we Suzuki, he says they will be just as good and I have no real reason not to believe him, as he has done me proud for many years on many bikes.
However I would like a second opinion from anyone who cares to give one, particularly if you've fitted aftermarket. (I think I read someone did recently?)
This is of course if new shims are required, but I have told him if they're real close to the limit then get them into the middle of the tolerance.

[Rixington43]

Shims are such a simple and industry wide thing that I think aftermarket is pretty safe here.
I ended up with shims from both JMP and ProX, both were bang on for size but I used the JMP ones in the end simply because they were a tiny bit more expensive and from a big German company who specialise in pattern parts. No issues with them whatsoever.

Some brands marketed themselves very much towards off road and motocross and I'll admit I avoided them purely because most stressed single pots have service intervals in feet and inches so I, probably unfairly, assumed they might not last as long

[kwackboy]

Mick , aftermarket shims are fine as long as your mechanic double checks their size.

Personally I've not had any issues getting OEM shims although I'd admit it's not that often.

[Barbel Mick]

Thanks for the replies.