CYCLING PLUS4 OUT OF 5
The X-Plus 540 is one of the cleverest U-lock designs ever, with its patented square profile shackle that resists torsional attacks better than most, taking a massive 1750Nm of pressure. The state-of-the-art lock mechanism beat our lock picker, and has great resistance to bolt cropping (146kN) that far outweighs its relatively light weight. The quality of the materials and the build meant this one outlasted our corrosion test and the EasyZyKF bracket took the full 200 hours of abuse. In cutting tests it stripped the standard saw blade, and took over 2 minutes of cutting with tungsten. The power grinder result of nearly four minutes was only beaten by heftier rivals.