Hydraulic Disc Bike Brake Pads For quick, fast and quiet braking power for all out riding confidence. Organic & Steel Compound Known to be quieter than a metal pad, and have more initial grab. Kit Components Includes two bike brake pads, a pad spreader spring, pad pin and clip. Riding Conditions Metal compound is best for riding in dry areas. Lightweight Riding Reduced grams make for an easier ride uphill. SRAM HRD Brake Pads are exactly what your calipers have been asking for. Designed with different materials for the perfect ride and stopping power under speeds. Reduced grams make for an easier ride uphill. Available in sintered, organic/steel, and organic/aluminum. See below for compound comparisons. Kit Components: Each pad kit includes two brake pads, a pad spreader spring, pad pin and clip. Product comes with brake pads per one caliper so you will need to get two kits. Proper Care Instructions: Once a compound is used with a rotor, only that compound should be paired with that compound in the future. Brake pads must be replaced if the total thickness of the backing plate and pad friction material is less than 3 mm. The rotor must be replaced if the total thickness is less than 1.55 mm, or when changing pad friction material. Keep your brakes running smooth and strong by replacing the pads at regular intervals. These ones work for SRAM hydraulic road disc brakes, as well as Level Ultimate and TLM mountain bike brakes. Choose the organic compound for more initial bite and quieter operation, or choose sintered for more consistent performance on long descents and in wet or muddy conditions.