MotoTassinari V-Force 3 Reed Valve 1997-23 Yamaha YZ250 YZ250X RM250 V307A

  

This listing is for a new complete Moto-Tassinari carbon fiber reed Valve system which includes the bolts, gaskets, instructions, and reed valve assembly. With some models the reed systems may require you to cut the rubber intake manifold boot tabs off so it can sit flush against the cage. The V307A for the Yamaha YZ250 and YZ250X has been replaced by the new V4X07EM VFORCE4X. 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 10+ years.

The simple premise of the VForce3 reed valve system is to increase engine power and throttle response by increasing the efficiency over a conventional reed valve design.