Mach1 30mm ID Rim 650b 27.5" MTB Bike Wheels Tubeless BOOST SPACING Fits SHIMANO Ships within United States Click and collect or buy online Share Loading Facebook Like button... Mach1 30mm ID Rim 650b 27.5" MTB Bike Wheels Tubeless BOOST SPACING Fits SHIMANO Ships within United States Click and collect or buy online Share Loading Facebook Like button...