The newly designed, extended, and widened version of the MTX BEAMRACK is better suited for 29” MTB and gravel bikes. It features an MTX QuickTrack panel, compatible with MTX 1.0 and 2.0 system bags and baskets. Flip the panel to adapt it for bags and baskets from other brands. Ideal for 29” MTB and gravel bikes. Compatible with MTX 1.0 and 2.0 system bags and baskets. Fits seatposts with diameters from 25.4 to 31.8 mm. Integrated rubber bungee cord secures your cargo effectively.