Introducing the topeak defender set m1xc11 29 the m1 is compatible with all fork types including tapered steerers as the unique quick release attachment system integrates seamlessly the main body of the mudguard is constructed from a stiff engineering grade of plastic and the support frame is made from a soft flexible materials at both trailing ends this allows for a strong yet flexible base so if you were to fall off the bike the mudguard will be able to flex with the crash which dramat