Sun ringle mtx 31 welded mtb rim sun ringle is a major player when it comes to mtb wheels and spares years of experience have contributed to sun ringle producing some of the best mtb products on the planet features use freeridebig mountaindownhillrace width 31mm bead width 31mm inner bead width 24mm section height 22 5mm weight 630gbuysun ringle wheels tyresfrom chain reaction cycles the worlds largest online bike store