Noob question number 2,000 from me. Learning this car is going to be fun, I can already tell . Anyways, My 05' has a 180mm lower and I noticed that this one tensioner pulley seems "odd to me". For one, it's almost like it's backward, in that it doesn't have a flush face. It looks like the back side of a pulley should be, but hey, could be a German thing so that's not the point. The point is that it has rust building up inside the open lip, and I also noticed it has a groove right in the middle of it. Not sure considering the belt's back side rides on it. In any case, it looks like *** in a basket and I'd love to replace it with a double-bearing setup of some sort. I'm not in a place where I can whip the calipers out, so I figured I'd ask; is this a stock size or part I can order? If so, vendor name and size? Much appreciated fellas. I'm in love with the ride, but love tends to turn obsessive and now I want her looking GOOD under the hood.
Thanks!

Pulley in question

 

Its stock but you can contact Shardul a member on here for a better one.

 

^exactly. You can get either a 3 or 4 piece billet aluminum kit from Shardul

 

Thanks guys. Just wanted to make sure it was the same size as stock. I found Shardul's link and now just want to get home and check the other idlers. Might as well order the whole set if they're all stock. Wouldn't see that being the case considering the mods this car has, but I only want to bug him once, so I'll double check. Thanks for the quick reply!