Designed to mount bikes with 100/110mm x 12mm, 100/110mm x 15mm, and 110/110mm x 20mm thru-axles Compatible with pinch style forks such as Fox40, Manitou Dorado and Marzocchi 380 Rear wheel holder can accommodate all wheel sizes and widths from 700c x 23mm road wheels up to 26” x 4.5'' fat bike tires. Rear wheel holder features a ratchet buckle and strap that allows fast adjustment Works with Front Runner Racks and Load Bars Made from steel and aluminum and powder-coated for durability and longevity Note: Installation requires a minimum rack length of 1156mm (six slats).Note: This solution is not compatible with Boost Hubs/Forks.