Moto Tassinari V303-FM VForce3 Reed Valve For 1989-1996 Yamaha YZ250 SKI-DOO-Alpine-II-1989 1992 Arctic Cat Cougar 440

1992 Arctic Cat Cougar 440 L/C

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1991 Arctic Cat Prowler 440 L/C Mountain Cat

Brand: SPI

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Moto Tassinari V303-FM VForce3 Reed Valve For 1989-1996 Yamaha YZ250 SKI-DOO-Alpine-II-1989 1992 Arctic Cat Cougar 440Moto Tassinari V303 FM VForce3 Reed Valve For 1989 1996 Yamaha YZ250 Applications: Yamaha YZ250 Model Years: 1989 1996 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.