Exhaust System - No SilencerFits: ZX-6R P7F P8F 2009-2023 / ZX600P 2009-2023Ninja 636 2009-2023 models. - 304 grade stainless steel. - Replaces the standard OEM headers - Straight through, no restriction, compatible with your standard Kawasaki silencer or any made to fit your standard exhaust system including our own. - Designed to fit a silencer with a 51.5mm/2 inch internal diameter - As these come with the option of still using your exhausts Lambda sensor (if fitted) you can simply fit and ride, if your looking to maximise your bikes full BHP we would recommend a professional Dyno set-up. - Gaskets, clamps and fitting instructions included. - All Lambda sensor options are covered. - Larger M18 thread to accept a larger O2 sensor. - Standard OEM adapter to accept the standard.