Paired with the new winged air guide is a custom intake manifold boot that offers a straighter shot to the intake that greatly enhances both airflow and performance. The VForce4Ri also incorporates carbon fiber reed petals designed to ensure superior reliability and maximum performance. All R models include a rubber overmolded pad on the reed tip area of the reed cage to significantly improve reed petal life. FEATURES OF THE VFORCE4 REED VALVE SYSTEM.
The unique design of the VForce reed valve system features double the reed tip surface over a conventional reed valve design. This has two major benefits: 1 The reed petals only travel half the distance as a conventional reed valve design to get the same airflow. 2 Because the reed petals only need to travel half the distance of that on a conventional reed valve design, there is a greater chance of them being fully opened as well as a better chance of sealing when they are "closed". A reed petal never truly "closes" in a classic sense, as it is always in movement.
Consider this, an engine operating at 8,000 RPM results in a reed petal opening and closing 133 times in one second. This fact, sheds light on another VForce advantage. Since the petals are only traveling half the distance, they generally last longer as they receive less wear than the reed petals on a conventional reed valve design. STANDARD VFORCE REED VALVE FEATURES. Double the reed tip surface over a conventional reed valve design Increased bottom end, stronger mid-range and longer top-end Greater efficiency due to reduced reed petal travel More airflow means more horsepower Reduced reed petal wear Screw free design eliminates risk of screws going through motor Screw free design enables super quick reed petal changes.
NEW AND IMPROVED VFORCE4 FEATURES. All-new reed petal resin system, carbon fiber and lay-up Pre-curved reed petal ensures better seal at tip Wider reed cage for maximum airflow Combined reed tip area increased by 10.5% resulting in increased total air flow Airfoil shape added to cage tip to increase air velocity from outer ports Long reed stops added to progressively slow petal tip velocity, for increased petal durability Reduced frontal area of central wing by 15.6% combined with a more aerodynamic shape. Custom intake manifold boot that offers a straighter shot to the intake that greatly enhances both airflow and performance. If you have a po box, please provide BOTH the po box and physical street address. Some items may have a slightly different appearance than what is shown in the picture.Please review the entire description to verify proper fitment. We can not mark items as "gifts" or change the value. The item "2018-2019 Yamaha YZ65 V-Force 4Ri Reed Cage/Block With Boot And Carbon Petals" is in sale since Friday, April 5, 2019. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Air Intake & Fuel Delivery\Other Intake & Fuel Systems". The seller is "fullcirclepowersportsco" and is located in Longview, Washington. This item can be shipped to United States, Canada, United Kingdom, Australia, Mexico, Germany, Japan, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Estonia, Greece, Portugal, Cyprus, Slovenia, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, New Zealand, Philippines, Singapore, Switzerland, Norway, Croatia, Malaysia, Brazil, Colombia, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Guadeloupe, Iceland, Cambodia, Cayman islands, Sri lanka, Luxembourg, Macao, Martinique, Maldives, Nicaragua, Peru, Pakistan, Paraguay, Viet nam, Uruguay, Russian federation.