Smog Block Off Plates for Honda model Sport Bikes. 
Motorsports Smog Block Off Plates are designed to seal off the ports on the valve cover used by the air injection system (a.k.a smog pumps or AIS). 
The air induction system (AIS) burns unburned exhaust gases by injecting fresh air (secondary air) into the exhaust port, reducing the emission of hydrocarbons. 
Once these are capped off the air injection system can be safely removed. 
These Smog Block Off Plates are made from CNC'ed billet aluminum
There are three reasons why you want to remove the air injection system from your bike.

Feature:
1. If you are using your motorcycle on a closed course (racing, track days, etc.) you will want to remove all unnecessary equipment from your bike for reduced weight and ease of maintenance.
2. To get an accurate Air:Fuel (A/F) ratio when dynoing the bike. The air injection system pumps fresh air directly into the exhaust stream in order to burn off any unused fuel. Unfortunately by doing this the A/F ratio is thrown off by the extra "fresh air" in the exhaust stream. By removing the air injection system you can achieve an accurate A/F ratio.
3. This addition will typically remove the majority of popping on deceleration that can be experienced with un-burnt gasses within the emission charcoal chamber. 

Fitment:    

For Honda
CBR1000RR 2004-2019
CB1000R 2011-2014
CBR600RR 2001-2016
CBR600F 2001-2006
CBR600F4I 2001-2006
CBR929RR 2000-2001
CBR954RR 2002-2003
CB900F 919 2002-2007

Packaged Included:

1 Pair of Smog Block Off Plates