Block Off Plates, Air Injection Suzuki GSX-R 1000 2001-2008, GSX-R 750 2001-2005, GSX-R 600 2001-2005, GSX-S 750 - APE Raceparts

These reed chamber covers for the GSXR1000 replace the ugly stock caps. They are fully cnc-machined from billet 6061 aluminum and feature the hallmark "R" engraved in the top. Bolt holes are recessed so bolt heads are flush with the top of the cap.The kit comes with both caps and four bright mounting bolts. Uses stock reed-valve assembly for sealing - no gasket necessary.

What do these do?

To meet federal regulations, OEM's use clean air injection that adds oxygen to the exhaust.  This allow unburnt fuel to burn and reduce hydrocarbon emissions into the atmosphere.  For this to properly work, stock exhaust systems have a catalytic converter inside that completes the process.  Once an aftermarket exhaust system is installed the added oxygen does little to help burn the excess fuel.  Instead, it often leads to "backfiring" or "popping" when engine braking or decelerating.  By disabling the clean air injection one can nearly eliminate all backfiring.  Also, since the clear air injection is adding extra air from the air box you can gain some increase in air box pressure when at speed.  Keep in mind also that with the clean air system in place, any air/fuel sensors or dataloggers on the bike will show a leaner running engine causing you to tune your bike and adust the fuel system too rich.  This can only be prevented by eliminating the clean air system and all associated hoses.