Jagwire Sport Disc Pad Semi D/Ace R9170Our most popular disc brake pads the Sport Semi-Metallic pads are a great choice for most riders. An upgrade over most OEM pads they feature a high-performance semi-metallic compound that blends the low-noise of a resin pad with the durability of a metallic pad. Mounted to a steel backing plate these provide both performance and value. WHEN TO USE: Combining the best attributes of both organic and metallic pad compounds Sport Semi-Metallic pads are an excellent all-purpose option.Compatibility:Â ShimanoXTR M9100; Dura Ace R9270 R9170; Ultegra R8170 R8070; 105 R7070; Tiagra 4770; GRX RX810 RX400; Road/CX RS805 RS505 RS405 RS305; Metrea U5000RidereverTriva Attack-S (FM) Attack-U (FM) MCX-2 (FM) MCX-1 (FM)