Find new horizons and discover new trails when you hitch your bike to a Coho XC® cargo trailer using the Coho® Thru Axle. Designed for bikes with 12mm thru-axles, the Coho Thru Axle is available in multiple thread pitches and lengths to accommodate a wide range of bikes. Note: The Coho Thru Axle is required for any bike with a 12mm rear thru-axle to connect to the Coho XC. Stock axles are not compatible with the Coho XC hitching system.