SKS chainboard hub/Chain Universal

It took some effort but these installed perfectly on a matched pair of Raleigh Alysa 4 1x11 bikes with only a little trouble. Due to the way the rear dropout is welded in on the frames the closest attachment was before the rear der cable stop but these have enough adjustments to allow that. Plastic is a decent thickness but flexible enough to not crack easily.Installation will be made a lot easier with a repair stand which I lacked for this job, it can be done without but you'll be happier doing this with the bike at eye level and easy to pedal.To install this you will need a crank puller, a couple allen wrenches, a bb tool, an 8mm wrench and a hacksaw.

The chainboard was just what we needed. My husband had difficulty installing the first one on my white bike. When we needed one for his black bike almost a year later, he installed it more easily, BUT the important adjustment piece was missing. You can see the difference in the pictures. we used tape on his and a shim to keep it from rubbing the chain. How can we get the missing piece? I don't know why the pics are upside down. They were ok on my computer.

Does not work on Thorn Nomad with Deore Holow Tech II bottom bracket and Thorn chainring. When rubbing the chain on the inside it also rubs on the crank side slightly, the strap on the back will not close small enough to clamp on the frame. This should not be used with an egocentric bottom bracket, when you adjust the chain tension it will move the chain guard bracket.Does not work on Breezer Beltway 8 also with Deore, same issues as above but worse because the belt is so wide.I can see it as a quality product just really bad fit for the Nomad and Breezer beltway.

This is exactly what I needed as it fits my bike setup. To be fair, it's probably closer to a 4.5 star review.With that in mind, I have a converted 1x9 on an early 1990's Nishiki mountain bike with a Deore MTB triple crank. To make everything work, I moved my chainring to the middle position (see picture #1) and put the spacer washers on the outer position. After that, installation was pretty straightforward.The plastic was easy to cut with shears and it came with multiple mounting brackets to connect to the chainstay. I wrapped a piece of inner tube around my chainstay to make it fit, and after alignment this is virtually silent.

Very finicky to get adjusted so that it doesn't rub on either the chain or the crank arm. Plastic molding is thicker than a traditional stamped steel chainguard, and there isn't much room to play with between the crank and the chain. The plastic has depth to it, no doubt to make it stiffer, but the design might be better with just a bit less depth so that it doesn't constantly rub one place or another. Still, once you get it adjusted, it stays put.

I installed this on my wife's mid-90s Specialized Hard Rock. One note is to check whether you have a front derailleur mounted on a plate that the bottom bracket goes through -- like the one that you can see from the picture that this chainguard mounts to. These are not common -- I'd never seen one before -- but if you have one, be advised that you will most likely need a different (seat-tube) mounted front derailleur; you just can't fit them both.After changing the front derailler, cutting the tail of the plastic part of the chainguard to length with a hacksaw, cutting out the front derailleur notch on top to make it a bit bigger, hammering the rear attachment bracket flat so it would fit, and fiddling around with trying to get the chainguard in between the pedals and in the right position, it works. But it blocks the front derailleur from shifting into its outermost (highest) gear. My wife is biking to work in a flat area, often in nice-ish clothes she doesn't want grease on, so it's worth the tradeoff for her.In short, it's a pain. There is probably room for innovation in chainguards in terms of ease of installation. But this is the best I could find on Amazon.

Had it professionally installed because it's a pretty complicated process, and it barely fit within the tolerances on my 2009 Kona Dr. Fine commuter bike, but now, it works great. Protects my khakis from grease.

I'm a big fan of SKS fenders and I expected the same design and quality for their chainguard. Unfortunately this is not the case. The installation requires lots of time and tweaking, the hardware is of poor quality and in the end the chainguard remains flexible and appears fragile.Overall it does the job, and can be installed on most bikes. But it is not on par with other SKS products