The Robert Axle Project makes 12mm thru axles for bike trailers, trainers and accessories to make your best bike fun and functional.
159 or 165mm M12 x 1.5 for BOB Trailer
The Robert Axle Project makes 12mm thru axles for bike trailers, trainers and accessories to make your best bike fun and functional. Their products allow cycling families, adventurers, commuters and enthusiasts to enjoy traveling by bicycle without leaving their cargo behind.
With the thru axles, you can attach your favorite bike trailer—Burley, Chariot, Thule, BOB and more—to any bicycle that has a 12mm thru axle. Also availiable is 12mm thru axles that fit mountain, fat, road, cross, and electric bikes.
Measure your axle.
No special tools required. What size do I need ? Consult the Robert Axle Website and print the Fitment Guide (print actual size).
Axle length is not the same as hub length. A bike with a 12×142 hub standard will have a significantly longer axle.
Thule, Chariot, Burley, InStep, Trek, Croozer, Doggy Ride, Carry Freedom, Schwinn, Hamax, Nordic Cab, Aosom, Everyday, Wandertech.