DO NOT BUY THEM. They aren't durable. Have broken them with out crashing, I have seen them fall off 4 different bikes that didn't crash. The people at performance have broken ones returned constantly.
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Rams Cycling Team
'06 Cervelo Soloist Team record, '04 S-works epic sram and king equpied, '03 litespeed hyperion DA/Ultegra 10sp