Review on WEIYINGSI Heavy-Duty Chain Roller Tensioner with Spring for 110cc, 125cc, and 140cc Pit Pro Dirt Bikes by David Lesperance

Considering the price I shouldn't have expected much. The arm itself appears solid, but everything else isn't. The screw to which the idler pulley is attached had a bad thread, which meant the nut could not be screwed in properly. The idler pulley itself is not mounted and is free to rotate on the bolt. I'm aware but I was hoping to reuse the tensioner with the bearing but the shaft on the arm is too large in diameter. Spring was the last. There simply isn't enough tension being applied to keep the chain taut.