Being one of the leading names in the motorcycle drag racing world, Brock's Performance has been designing track proven products for years.

Designed to block off the ports on the valve cover used by the pair system, this block off kit is made from cnc billet aluminum and with a specifically designed rubber cap to remove the air injection system.

The air injection system pumps fresh air into the exhaust port to burn any unburnt fuel, which can result in incorrect air fuel readings once you've installed a full exhaust system, and can result in an improper tune.

A very simple solution to having your Yamaha R1 / R1M tune to be perfect.

NOTE: THIS PRODUCT IS INTENDED FOR CLOSED COURSE COMPETITION USE ONLY! USE OF THIS PRODUCT FOR ANY OTHER PURPOSE IS STRICTLY PROHIBITED.

Made in USA.

Fits:

Yamaha YZF R1 - 2015 to 2025
Yamaha YZF R1M - 2015 to 2025