NOBL's 28.2mm wide 29" rim features an asymmetrical profile which creates more even spoke tension. The 23mm internal width supports a wide array of tire sizes and provides a more traditional round profile for the tire. All of their rims have a bead seat bump, however the TR28 has a reduced height to allow for fast flat repairs during race situations. The center channel is also slightly deeper than their wide rims. You can build up the center channel with a layer of gorilla tape if your tires fit too loose.
The Hookless lips are reduced to a more traditional 2.6mm wide for a lighter more trail/XC friendly package. These rims have a medium stiffness as far as carbon rims go.
All of NOBL's 2017 rims have a new layup process that we've developed to make our rims stronger than ever. Every seam overlaps at a different position within the rim in a strategic position. The center channel now interlocks with the hookless lips through multiple layers to help distribute impact forces.
STANDARD FEATURES ON ALL NOBL RIMS