- The Mavic Hub Bearings 6901 (M40078) are a set of bearings used in a wide range of Mavic wheels such as; * Ksyrium SLR / SLS 2011-2013 * Ksyrium SR 2011-2012 * Ksyrium SL 2011 * R-SYS SLR 2011 * R-SYS 2012-2013 * Cosmic Carbone 2014 * Ksyrium SLR/SLE/125 2015 * Cosmic Carbone 40 Elite / Carbone SLE 2015 * Cosmic Pro Carbon 2016-2017 * Ksyrium Pro and Pro SL 2016 * Ksyrium Pro Exalith 2017 - 2017 To determine which bearings you need, you can enter the serial number of your wheel on the ** [Mavic Technical Page ](https://technicalmanual.mavic.com/tech-mavic/technical_manual/data/mavic_tech.php)** **Please note: If we do not have the spare part you need on our website, please give us a call at 01525 381347 with the Mavic item code at hand. We are able to special order any Mavic spare part.**
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