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This parallelogram design offers great convenience due to it packing down to a small size. With a carry case included, it’s simple to transport too. Unfortunately, the riveted design has strength limitations.
Levering two links against each other puts massive stress on the rivet until it eventually pops, and that’s what happened to the FS 300 within 45 seconds.
That’s not to say that the device should be dismissed straight away. We think its flexibility is good for a quick cafe-stop, as is the obvious visual deterrent.
Authors
Warren Rossiter is BikeRadar and Cycling Plus magazine’s senior technical editor for road and gravel. Having been testing bikes for more than 20 years, Warren has an encyclopedic knowledge of road cycling and has been the mastermind behind our Road Bike of the Year test for more than a decade. He’s also a regular presenter on the BikeRadar Podcast and on BikeRadar’s YouTube channel. In his time as a cycling journalist, Warren has written for Mountain Biking UK, What Mountain Bike, Urban Cyclist, Procycling, Cyclingnews, Total Bike, Total Mountain Bike and T3. Over the years, Warren has written about thousands of bikes and tested more than 2,500 – from budget road bikes to five-figure superbikes. He has covered all the major innovations in cycling this century, and reported from launches, trade shows and industry events in Europe, Asia, Australia, North American and Africa. While Warren loves fast road bikes and the latest gravel bikes, he also believes electric bikes are the future of transport. You’ll regularly find him commuting on an ebike and he longs for the day when everyone else follows suit. You will find snaps of Warren’s daily rides on the Instagram account of our sister publication, Cycling Plus (@cyclingplus).
