单动力还是双轮驱动？了解Julien Absalon选择单动力传动系统

With two Olympic titles and five World Championship titles, Julien is one of the most experienced Cross Country riders in the world. He knows his strengths and specialises on short Cross Country courses. The 11-40 cassette gives him small gear steps which he likes in XC racing. Here he explains why the 1X11 system is the perfect choice for him. drivetrainadvice.shimano.com/global/en