Installed the 45T sprocket today.....best mod for the $($46 from Sprocket center). I was going to do a full 520 conversion, but couldn't justify $220 when my chain was in perfectly good condition. $46, however, was a no brainer. Didn't have to break the chain or remove the wheel. She now pulls like a beast...especially in lower gears. It's a must do!
Will
Will