Smog Block Off Plates Cover Fit For Yamaha YZF R1 YZF R1M R1S YZF R6 YZF R6S FZ1 / FZ1 Fazer FZ6R/ FZ6 Fazer 600 FZ8 FZ10 MT-10

Smog Block Off Plates for Yamaha 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 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 charcoal chamber.

Note: Proper tuning may be needed and this is general feedback

Fitment:

For Yamaha

YZF R1 2003-2019 

YZF R1M 2015-2019

YZF R1S 2016-2019

YZF R6 2003-2019

YZF R6S 2006-2009

FZ1 / FZ1 Fazer 2006-2015

FZ6R/ FZ6 Fazer 600 2004-2015

FZ8 2010-2015

FZ-10 MT-10

Packaged Included:

1 Pair of Smog Block Off Plates