Chain Guide, 30-40T, CYSKY MTB Chain Guide Direct Mount Chainring Guard Perfect for Most Bicycle Road Bike Mountain Bike BMX Fixie (Alloy Aluminum, BB Mount) (BB Mount, Black)

Did the job

Bought this to add a chain guide to my mountain bike. Great price, nice anodized metal.You do need to remove your bottom bracket to install, and see what, if any spacers you are using.My setup is a DUB BSA bottom bracket, zero spacers between the bottom bracket. 1 x 4.5MM spacer on the outside of the bearing, since I use need boost spacing.Had to remove the 4.5MM spacer, replace with a 2MM spacer. The bracket is 3MM. Even then, the chain guide, with both spacers wouldn’t clear the chain ring with the chain on. I had to add 1 spacer PLUS a presta valve nut, to achieve the perfect spacing.The chain guide needs to be maxed out on height to clear a 36T AbsoluteBlack oval chainring.I recommend some blue locktite on both screws.

Exactly what I wanted! Ridden in several races and a long rides works perfectly!

get chainguard XT130 the one that wraps and bolts to the seat downtube it made of aluminum and it solid it stays put

Great Product

First ride was awesome. Hit some jumps and my chain didn't fall at allSecond time was not so god. The screw that adjusts the hight keeps getting loose and if you tighten too much it'll strip for sure

A nice and simple chain guide that was easy to install and adjust. You need to r&r your bottom bracket to install so that will be a problem if you don't have the proper tools.I had to add some washers to space the plastic guide out far enough to center it over the chain. It's been working so far.

Nothing extremely bad about it, just felt cheap for the money even as little as it is, I cant give an opinion on reliability cause I didn't make sure it would fit my bike.