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Graves Motorsports Smog Block Off Plates for Yamaha Sportbikes

2 product reviews
$43.95
Brand Name:
Graves Motorsports
SKU:
AB011
Availability:
In-Stock
Quantity:

Product Description

Graves Motorsports Smog Block Off Plates for Yamaha model Sport Bikes. Graves 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). Sold as set shown. This product is intended for closed course competition use only. Use of this product for any other purpose is strictly prohibited.
 
 
Fitment:
  • Yamaha R1 / R1M / R1S 2004-2025  + R6 2003-2023 (all newer than 2020 race models) + FZ-10 2017 + MT-10 2018-2020 + R6S 2006-2009 + FZ1 All + FZ8 All + FZ6 All


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 and feature the Graves Motorsports "G" logo. There are three reasons why you want to remove the air injection system from your bike;

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

Product Reviews

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  1. Great Product

    Posted by Kenny Clapp on Apr 5th 2024

    I bought these Graves block off plates for my 2011 yamaha r1. First of all the website is very laid out and established to where its easy to navigate and look at products. The plates are hands down the best quality plates that i have ever seen. They are crafted with the Graves logo on them and fit snug on the valves. Great quality and they look amazing! Thanks Graves, you guys are the best!

  2. Great quality

    Posted by Unknown on Jul 18th 2021

    Well built, relatively easy to install, works well with my BT Moto flash.

Some product Installation Instructions can be found by clicking HERE.

Return to the the description tab to check if any video information / instructions are available at the bottom of this product's description.

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