The motocross world knows PWK. Keihin PWK carburetors are the dominant carbs on the factory motocross machines. Because of their great performance they come stock on a lot of the leading brand bikes.
PWK Features
Chromed semi-flat (D) throttle valve for excellent response and more flow at high RPM.
Throttle bores sized to give maximum power.
Easy jetting with jetting parts available.
Quad Vents: eliminates post jump bogging from fuel plugged vent passages
PWK Air Strikers : directs air to main nozzle for improved signal and throttle response.