Get the perfect tight fit everytime! Upgrade your existing Ergorig to the ratchet belt system now available on the Ergorig II. All parts and tools needed for upgrade included.
 
Pleas select if the Ergorig you are upgrading is a Classic or CenterFit and a Tall or Short (If you're not sure what size it is, look at the serial number on the inside of the rear strut and it is a Short if it ends in a "S", and a Tall if it doesn't)