Specialized's Fuse Pro 6Fattie delivers more and sacrifices nothing, more traction, more float, better handling, and more laid-back fun. Rolling on 650B x 3.0-inch tires, the Fuse Pro delivers unprecedented traction and stability so you can shred the loosest, most off-camber and rock-strewn trails you can find. The solid M4 aluminum frame features Specialized's exclusive Diamond Stay technology to accommodate 6Fattie wheels and tires while maintaining the short chainstays that keep a bike playful and fun. The spec is dialed with a RockShox fork, wide Roval wheels, and SRAM's incredible X01 drivetrain. There's even Specialized Command Post IRcc dropper post for maximum control when things get rowdy. The Fuse Pro 6Fattie—It's not fat, it's pleasantly plump.