i was interested in seeing what are the best upgrades for my road bike (giant defy 5) one site said rotor Q rings are a must and other sites rave about them, are they an upgrade only for the very serious of riders or is it worth getting done. i guess a bike shop would have to fit them. any other suggestions on upgrades i am already thinking which saddle to get as the standard giant one is not comfortable. cheers
![Cycling :bicycle: :bicycle:](/styles/default/xenforo/smls/Laie_76A.gif)
![Cycling :bicycle: :bicycle:](/styles/default/xenforo/smls/Laie_76A.gif)