Mavic Cosmic Carbon SLS Rearwheel 2014 - Rattling noise.
a common problem is to have a spoke nipple or some carbon flash that is loose inside the rim.
Take off the tire and rim strip,
and hold the wheel with the valve hole at the bottom.
shake and rattle the piece, until it falls out of the valve hole.
Another option is to squirt some spray foam into the rim,
and shake the wheel until the piece sticks in the foam.
Use very little foam,
as the more you use, the more off balance the wheel can become
and you can fill spoke or valve holes, making service difficult.
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