Stans no tubes crest mk3 mtb rimthe legendary crest rim is now even better thanks to a wider lower profile the crest mk3 sheds weight for faster acceleration and climbing and thanks to a 23mm internal width you can increase tyre volume for improved stability with wider tyres inspired by their carbon technology the entirely new rim shape adds strength and virtually eliminates the chance of a tyre pinch flat refined over the past 15 years stans bead socket technology offers the most truste