1. Before you buy, please compare the offered picture with your original brake pad. As a rule, if the shape fits, then the product is suitable for your bike.
2. The surface of the new brake discs and brake pads are smooth so that there is enough friction for braking. It may be, if you use the new brake pads together with the slightly old brake discs, the friction surface becomes small, then it doesn't work so well, usually it gets better after cycling 50km to 80km.