Is there anywhere on the face of the earth that sells a spring loaded tensioner?!?(that i can order from) Thanks for the help. Also, i hate my bike. READ THE REASON FIRST: My back wheel is causing all the problems. I have a skinny ass tire on there to keep the chain from shredding it. also i have a spacer behind the sprocket to push it out more, and its still close!!! i cant even use my brake arm, i have a cheap pair of caliper brakes on there for now. i bought the brake arm extension from spooky tooth, and there is not enough room b/t the frame and sprocket for a brake arm. if i make the spacer thinner, my chain will hit the tire!!! where can i buy a premade rear wheel that is completely assembled with no problems????!!!!