I attached a bell to one of mine. Never got in the habit of using it though. I repainted the bike later and took a torch to them. You could also get the shimano covers for them (the ones to convert old bike to sis shifters).
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I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC