KS-D270S If these look like your old ones this is what I would use. Sintered disc brake pads for maximum braking performance under extreme conditions. Less sensitive to brake fluid but disc wear and thermal loading is much higher compared to organic pads. If your old pads are not sintered. you will also need to make sure your rotors are hardened. I would think that a tandem would have sintered already and quality rotors but I would check anyway.