SwissStop’s replacement pads are the choice of pro riders. The RacePro pad model fits Campagnolo 910 holders and is available in various rubber compounds. This version features the Black Prince high performance compound for carbon rims. The Black Prince compound provides excellent stopping power in and wet and dry conditions with superior modulation and low pad wear rate. Not designed for use with aluminum rims. Sold in sets of four pads enough to retrofit a front and rear brake.