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These Grooves?(2 posts)

These Grooves?toonces
Mar 12, 2003 10:48 PM
What are these grooves in my Mavic CXP-22 rim's braking surface? They are from a track bike, but I think they can be used with regular road bikes. So what do the grooves do?
re: These Grooves?morency
Mar 13, 2003 12:56 AM
wear indicators: grooves gone, rim gone