At only 6.5 grams each, ACER Racing's Carbon Fiber Jockey Wheels with our world famous Ceramic Nitride Pro Series Bearings are the ultimate jockey wheels for road bikes or mountain bikes. 11 teeth each, choose from 10 Speed rear derailleur or 11 speed derailleur versions. Lighten up the rotational mass in your derailleur with these jockey wheels and feel the difference. In competitive cycling, every gram counts.
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