CohernySingle Speed Bike Chain Tensioner Lightweight Aluminum Alloy Bicycle Replacement Accessories

I mounted this and it worked just fine but I elected to buy one with a chain guide instead as I worry about going over pot holes and curbs and throwing my chain with this. For the price and ease of installation though it cant be beat.

I've used this for over a year now. truly a great design.

The media could not be loaded.  "Modification of the Tensioner's mounting arm was necessary before I could install it on my Recumbent Trike. The mounting arm has a machined rectangle extrusion on one side to fit the slot in the bike frame, but I had to remove it for better placement. This was easily accomplished in five minutes with a crosscut file.After reading other reviews, I noticed that some people had trouble adjusting the tension. It's actually very simple, as I demonstrated in the video.My only concern is the use of aluminum for the idler wheel/pulley instead of steel. This may not be a wise decision as aluminum has a greater potential for wear compared to steel. You can see more details in my video." The reason for the 3 Stars was because there were no instructions, and aluminum was used for the idler wheel.

As it turned out, I wasn’t able to use it as I’d hoped with my particular hub setup. But, I’ll hang on to the tensioner and add it to my bin of bike parts where it will likely come in handy sometime in another situation.

Added this to a janky bicycle chain that was just a link or 2 too much and would derail often in the middle of a ride. Couldn't keep tension on it by the axle nuts alone. This took all the slack out of the chain and keeps good tension on the chain and has not derailed in months of riding on and offroad!

This is a okay chain tensioner, I think there are some better ones out there. The spring is ok and you have to tighten the screw a lot to get it to hold. Just get a better one this one is ok.

If you need it, you should get it!

Did not include hardware