Please Note, Some Models May Require A Reed Spacer For Clearance. The item "V Force 3 Reed Valve Kit Yamaha YZ250 78-82 YZ400 1979 YZ490 82-83 YZ465 1980-81" is in sale since Tuesday, May 15, 2018. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Air Intake & Fuel Delivery\Other Intake & Fuel Systems". The seller is "parts-traders" and is located in Englewood, Colorado. This item can be shipped worldwide.