RockyMounts Driveshaft Thru Axle adapter for fork-mount bike racks

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by Mark V on Aug 13, 2014 at 9:40 AM

This year I acquired a new mountainbike, and other than some experiments with a dropbar mtb a few years ago, it’s the first mtb I’ve gotten since the ’90s. Things have changed since then: 29er and now 650B/27.5 wheels, tubeless tyres, carbon fibre EVERYWHERE. But the night before leaving to do my first mtb race in 16 years, the most important change was the evolution of suspension forks. Not because forks are better in some way. No, the crucial difference is that most high-end suspension forks now have some form of thru-axle that wasn’t going to fit the bike rack on my ride’s car. It was 8pm on a Wednesday evening, and we were leaving at 9am in the morning. Not a whole lot of time to find a solution, but luckily REI had one.

The DriveShaft rack adapter from RockyMounts allows your mtb equipped with 20 or 15mm front thru-axle to fit a typical fork-mount rack. It even allows you to lock the bike in place (assuming that the rack itself has a lock too). Hint: the DriveShaft tends to rotate in the fork, so make sure you clamp the adapter into the rack and then the fork on the adapter. All fork-mount racks make me a little worried, but once you clamp the bejeezus out of the rack-to-DriveShaft connection, the DriveShaft’s grasp on the thru-axle seems really secure.

Retails for about $70.

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