Originally Posted by tire
what's this needed for? it's expensive is why it is concerning me. i'm already over budget and i haven't even gotten the dang motor kit yet.
You WILL want one of those or a shift kit. Believe me! The stock rag joint is virtually impossible to true and puts undue stress on your wheel spokes. The disc mount sprockets weigh much less than the stock sprocket and will provide a solid, true track for your chain.