CNCMOTOK Heavy Duty Chain Roller Tensioner with Spring for 110cc 125cc 140cc Dirt Pit Pro Dirt Bike and 4 Wheeler - Black Review

Part is missing. You will need a 15mm to 12mm socket to mount the 1/2" screw, otherwise you will have a hard time finding a 15mm screw to install! I've been looking for the right screw for a long time.

I like the chain adjuster but the large mounting hole makes it difficult to find a bolt of this size. I had to get creative to install it on a mini bike I was working on. I would happily pay more if it had a mounting screw or socket to make the hole size smaller. 3 stars. That's all I can give

I found the assembly of the chain tensioner good - but I had to use a different spring. The lever and pulley were indeed what I needed, but the device seems to work well and maintain spring tension as intended. Time will tell how the plastic reel holds up. And the seller sends two rolls, so he's telling me they might not last long. If the rollers won't hold up, the easiest way is to install the sprocket on the tensioner shaft.

NO heavy duty. Do not buy this tensioner, it is 100% weaker than the one you are trying to replace, give a guarantee. This does NOT tension the chain, the spring is basically a spring trying to hold the brick. It really annoys me that we have these companies wasting resources making crappy products. JUST CHOOSE THE EXTRA TIME AND GIVE US A GOOD SPRING. People literally buy them and throw them in the trash. What a waste

Installed one on my Baja minibike and it works great! Yes, both Frank and the tensioner had minor changes, but I couldn't get a better fit. I've ridden the bike a few miles since installing it and the wear and tear is negligible. I expect to have plenty more miles to go and have already ordered another one for my next minibike. My only concern is that removing the nylon wheel will seem impossible as the rod will rotate when torque is applied. Small problem as the wear is negligible. I don't…