Our Lauf chain catcher is 3d printed in ultra tough carbon fiber infused nylon and is a direct fit to Lauf True Grit frames. We sized it so it will not rub even with large range cassettes.
This is a 3d printed part so there are some surfaces that will have imperfections due to required support material when printing but we position our chain guides to have the best strength possible while hiding the rougher surfaces in places you will not be able to see when it is installed on the bike.
To install, simply remove your bottle opener and bolt this guide in place of the bottle opener WITHOUT the spacers used for the bottle opener. The easiest way to set the height of the chain guide is to put your bike in the biggest cog on the rear of the bike and align it so the chain just barely clears without rubbing. Feel free to message us with any questions about set up.