Our 26 inch front wheel is laced to a 20mm thru-axle front hub with 36 spokes and brass nipples for extra durability. The 24 inch rear wheel is laced to our custom Motoped rear hub with 36 spokes and brass nipples as well. This is an all-purpose wheelset designed to handle a variety of terrains. We recommend up to a 26×2.6 tire for the front wheel and up a 24×3.0 tire for the rear wheel.