ALWAYS MADE HERE IN THE GOOD OL' USA please do not buy the Chinese copy that duplicates our product and listing fully. We support our customers fully. CUERVO RACING ATV Parts Yamaha 2015 2016 2017 2018 2019 2020 2021 Raptor 700 700r and 700 SE*************DOES NOT FIT 2006-2014, THEY DO NOT HAVE THIS SYSTEM************* ... aluminum billet Air Injection System block off Test plate. The factory AIS system causes excessive popping due to Air injected into the exhaust.Use our "pop stop" CR106 to block off for testing or to leave in place over the read valve on the head to eliminate popping associated with this system. Simple 2 bolt install, fits without modification.Fixes drivability issues off idle hesitation and stalling No HP loss or gain, eliminates popping associated with AIS valve on decel or engine rev. Our custom blockoff plate is also known as CR's "pop stop".Lightweight, high quality.Due to emissions control standards this item is intended for closed course Race use only. Quick shipping. For technical questions you may contact us or thru our Facebook page Install instructions. Remove 2 allen bolts to AIS cover on rh side onhead using 5mm allen wrench. . Leave reed valve in place and place Pop stop plate with dimple facing the hear and offset to the top. Tighten bolts. Use rubber cap on either the solenoid valve or on the intake tube. The solenoid valve can be unplugged and removed without any negative impact. If shipping and handling time is listed as 20+ days then we are in-between batches and will have more in shortly.