2020-2024 Kawasaki ninja 1000 SX. Black widow full exhaust system install

The OEM system is off to the shed. New BW full system going in. https://www.blackwidowexhausts.co.uk/... Update: have about two years on the system now. It's excellent and recommened. I did get the bike flashed at TWDW (Two Wheeled Dyno Works) in WA USA, and the improvement was massive. i did it in person, but they do mail in service as well.    • 2 Wheel DynoWorks ECU Flashing Service FAQ   The bike pulls cleanly from down low, and the power increase is very noticeable. About 135HP to the rear wheel.