HEINZ BIKES CAP GAS VENTED GD HB-PVGC-GWith its innovative design and integrated ventilation function, it ensures even tank ventilation and thus optimises the fuel flow and performance of your motorbike. And that in all positions, even when wheelieing, Ventilation function (vented): The fuel cap is equipped with a special vent that regulates the pressure in the tank and improves fuel flow. This prevents vacuum pulling when refuelling and ensures constant tank emptying, especially on longer