GSXR 600 K4 K5 K6 K7 K8 K9 L0 2004-2010. GSXR 750 K4 K5 K6 K7 K8 K9 L0 2004-2010. ECE R 90 brake safety approved and TUV tested, these ultra high friction HH rated brake pads remain a market leader above the rest as nothing else beats the performance of the Double-H™ Sintered Superbike Brake Pad.