ZX6R Ninja (ZX600 G1 G2 J1 J2) 1998-2001. ZX6R Ninja (ZX636 A1P) 2002. 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.