I have a Shimano FC-U6000-L 36-22T I'm using for a build. It has a 64 BCD small chainring and a 96 BCD large chainring, both asymmetric 4-bolt. It seems like the whole point of bolt-on chainrings is that they're replaceable, and I was hoping to take advantage of this to play around with some different tooth counts.
The problem is, I can't seem to find these chainrings anywhere? Retailers don't seem to sell OEM replacements. 3rd party chainring manufacturers (Wolf Tooth, Garbaruk, etc) seem to only sell 1x narrow-wide chainrings. When I resort to hunting on AliExpress, I can find 96 BCD chainrings, but every 64 BCD one I can find has symmetrical bolt holes. I wondered if the 46-30T crankset variant (with 110 / 80 BCD) would've been a better choice, but 80 BCD just doesn't seem to exist at all.
Is there somewhere I can hunt for these chainrings that I haven't found? Can bike shops obtain these chainrings in ways I can't seem to find as a consumer (presumably only in the standard tooth counts Shimano provides)? Or is it basically pointless that this crankset is sold with bolted-on chainrings rather than just welding them on?
by Polendri
2 Comments
Looks like there are Shimano chainrings available for 64 asymmetric on b2b websites at least. And 96 for sure. SLX M7000 is the main thing you’d be looking for I think, to be LG compatible
I see them in stock at a bunch of online retailers in the EU and UK, so they definitely exist, more likely your local shops just for some reason don’t stock them at the moment.