Complete Stage6 Intake System MKII with SportPro (NBR) reed valve. Including manifold with vacuum / oil injection port and vulcanized reed valve.

This “Big Valve” intake kit by Stage6 comes with a reed valve with a larger diameter for better flow and cylinder filling. Adding a “Big Valve” kit will improve performance noticeably und is indispensable when upgrading your engine with a bigger carb (19mm and more).

The rubber adapter that comes with the kit fits Dellorto 10–21mm und Arreche 17–21mm.

Stage6 Reed Valve VForce3, developed in cooperation with Moto Tassinari, renowned tuning specialist for dirt / offroad bikes.

The unique V-shaped design with double reed tip surface (8 petals) increases and optimizes fuel-air-mixture flow and cylinder filling. This in turn leads to better engine response and acceleration.

We recommend using the stuffer (included) to maximize performance.

Stage6 reed valve with hydrocarbon-resistant Viton coating with excellent sealing properties. Perfect for providing sufficient air for set-ups with bigger carburetors (19mm and more).

The reed valve comes with 3 Venturi inserts – 24mm / 26mm / 28mm. It is equipped with 0.35mm carbon fibre reed petals, an extra pair of 0.4mm glass fibre petals is included.

HQ intake manifold + CNC-machined spacer by Stage6. The manifold is made from robust FKM (Viton®). The combination of manifold + spacer will allow mounting your carburetor facing the rear wheel eliminating the risk of fuel spillage due to the carburetor being too tilted.

Special attention was paid to intake tract design. The canal is not simply drilled through, but runs in a flow-optimised design through intake manifold and spacer.

The spacer is available in four colours: alu anodised, hard anodised, black medium matte and bright orange. Connection diameter is 34.5mm.