Fenwicks fs 10 bike cleanerfrom the minute you start using fs 10 youll know that something is very different not only do the natural ingredients smell nice but they also enhance the performance of fs 10 formulated to encourage maintenance fs 10 not only cleans deeply but also makes the whole process of cleaning more enjoyable features free from caustics acids solvents metasilicates abrasives or silicone safe to use on shock units disc brakes aluminium steel carbon fibre composi