You did not say what size PWK your were going to be running?
 The Air Striker quad vents it (04 vents) allows excess air thats built up to escape through the vent tubes and prevents fuel slosh and is more designed for the ultracross mx crowd who jump and ride over erratic terrains.

Air Striker models have finned airfoil set of wings which direct air to the Main Nozzle for improved signal and throttle response.

Standard PWK Series Carburetors are available in 28, 33, 35, 39 an 41mm sizes. PWK Quad Vent Carburetors come in 36mm, and PWK Air Striker/Quad Vent Carbs in 35 and 38mm sizes.