The Surly Excellent Adventure Thru-Axle is a 12mm bolt-on thru-axle designed for hauling Surlys Bill and Ted cargo trailers with your bike. If your bicycle is equipped with a boost 148, 12mm thru-axle hub and you feel compelled to haul cargo, your Excellent Adventure awaits.

• 12 x 148mm hub compatibility only
• Designed for use only with Surlys Bill and Ted Trailers
• Works with slotted horizontal or vertical single-position dropouts
• Compatible models: Karate Monkey, Krampus, Grappler, Ogre, Lowside, ECR, and Troll