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MOTO TASSINARI

MOTO TASSINARI VFORCE4X REED VALVE KIT YAMAHA YZ250/YZ250X 97-24

MOTO TASSINARI VFORCE4X REED VALVE KIT YAMAHA YZ250/YZ250X 97-24

V4X07EM

$269.00 AUD
$269.00 AUD
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Shipping calculated at checkout.

The 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.

The 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. 

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.

    VFORCE4 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

      BIKE FITMENT:

      YAMAHA

      • YZ250 1997-2024
      • YZ250X 2015-2024

      SPECIAL ORDERS

      In order for us to be able to offer the entire range of some products, we have a special order in process. Once you place your order, we will order your items in from our suppliers. This allows you to have more freedom in choice of colour, style, upgrades etc.

      Processing time can vary - some items we will have within a few days, whereas some items are ordered in from the United States of America or Europe, and therefore require an extra few weeks to account for shipping time and in some cases, manufacturing time. You will receive an email confirmation when your order has been placed and you will receive status updates on your order as it progresses.

      If you have any questions or concerns or would like a rough ETA on order delivery times or stock levels, please get in touch with our customer service team and they will be able to assist you: support@motohouse.com.au or (07) 5681 1505.

      ITEMS FROM USA

      We place stock orders from the USA every 1-2 weeks - this includes items from Luxon and Guts Racing. We try our best to ensure all items are in stock but if not - please allow an extra 1-2 weeks for your order to be processed. 

      SHIPPING

      We offer free standard shipping on all items - there is no minimum order value required. View our shipping policy here. 

      RETURNS

      If you are unhappy with any items you have purchased, we have a 30 days returns policy - please view here.

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