Exhaust De Cat Downpipes Headers Fits: Kawasaki ZX-10R 2008, 2009, 2010 E8F, E9F, FAF models. - Ultra-light De-Cat upgrade with improved internals for an optimal gas flow. - Bikes on original settings require no modification. - Straight through with no restriction, compatible with your standard Kawasaki silencer/muffler or any that you are using on the original system. - We use the same connections as the original Kawasaki Cat box. - Important note. - There are currently two types of silencer connections used by aftermarket silencer/muffler manufacturers. - 1, Standard size connection. - The gasket is retained inside the De-Cat pipe for the connection to the silencer. - 2, Large bore connection. - The gasket is removed from inside the De-Cat .