Akrapovic Kawasaki Ninja ZX-6R 09-26, Ninja ZX-6R 636 13-20 Optional Link Pipe (Stainless Steel) - L-K6SO8/2Akrapovic Optional Link Pipe SS for ZX 6R K6SO8 2 This high grade stainless steel link pipe has been developed to optimize gas flow through the removal of the standard stock pre muffler to enhance performance. A second lambda plug is incorporated into the link pipe. It reduces weight over the standard stock pipe by 79. 2% (4. 6 kg). It offers impressive power and torque gains in the mid and high rpm range, with increases of 2. 4 kW (3. 3 hp) at 6,250