Replacement Plus compound brake block for Aztec Road Systems Standard fit pads are also compatible with Shimano Dura-Ace, Ultegra, 105 callipers and many other third party callipers High performance Plus compound gives the best braking performance in all conditions - provides maximum braking power, positive braking feedback and durability CAD tread pattern ensures maximum contact area for consistent braking performance in all weather conditions Also available as a system with pad carrier Kevlar compound only: RimRake tip removes debris from rim before main pad makes contact Kevlar enhanced compound increases power and reduces wear rate Campagnolo fit only: Replacement Plus compound brake block for Campagnolo road brake systems, 2011 onwards 2011+ brake pads can be distinguished from pre 2011 brake pads by the spring in the side of the system brake pad carrier NB: 2011+ System will not accept previous generation inserts, but 2011+ Inserts will work with the old generation System