{"product_id":"moto-tassinari-vforce4x-reed-valve-kit-yamaha-yz250-97-27-yz250x-16-27","title":"MOTO TASSINARI VFORCE4X REED VALVE KIT YAMAHA YZ250 97-27 YZ250X 16-27","description":"\u003cp\u003eThe all-new VFORCE4X for the Yamaha YZ250 and YZ250X motorcycles has been designed to offer you exceptional durability and overcome the shortcomings of the stock reed valve system.\u003c\/p\u003e\n\u003cp\u003eThe VForce reed valve system by Moto Tassinari has been the reed valve system of choice by anyone serious about two-stroke engine performance for the last 25+ years. The simple premise of the VForce reed valve system is to increase engine power and throttle response by increasing the efficiency over a conventional reed valve design by doubling the reed-tip surface. \u003c\/p\u003e\n\u003cp\u003eThe 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:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eThe reed petals only travel half the distance as a conventional reed valve design to get the same airflow.\u003c\/li\u003e\n\u003cli\u003eBecause 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\".\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003col\u003e\u003c\/ol\u003e\n\u003cp\u003eA 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.\u003c\/p\u003e\n\u003cp\u003eVFORCE4 FEATURES\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDouble the reed tip surface over a conventional reed valve design\u003c\/li\u003e\n\u003cli\u003eIncreased bottom end, stronger mid-range and longer top-end\u003c\/li\u003e\n\u003cli\u003eGreater efficiency due to reduced reed petal travel\u003c\/li\u003e\n\u003cli\u003eMore airflow means more horsepower\u003c\/li\u003e\n\u003cli\u003eReduced reed petal wear\u003c\/li\u003e\n\u003cli\u003eScrew free design eliminates risk of screws going through motor\u003c\/li\u003e\n\u003cli\u003eScrew free design enables super quick reed petal changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch5\u003e\u003cstrong\u003eBIKE FITMENT\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eYAMAHA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYZ250 1997-2027\u003c\/li\u003e\n\u003cli\u003eYZ250X 2016-2027\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MOTO TASSINARI","offers":[{"title":"Default Title","offer_id":48492538560796,"sku":"V4X07EM","price":289.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0702\/7707\/1132\/files\/IMAGE_MOTOHOUSE_WEBSITE_8afc050e-f1d9-4f57-b3e9-20e3261405ba.png?v=1769492248","url":"https:\/\/www.motohouse.com.au\/products\/moto-tassinari-vforce4x-reed-valve-kit-yamaha-yz250-97-27-yz250x-16-27","provider":"Moto House","version":"1.0","type":"link"}