We start with an Keihin PWM 38mm carburetor and convert it into a "pump-around," for reliability and repeatable performance.
To achieve this, the floats and needle seat are removed and a tube and restrictor are inserted.
Two fuel pumps (not shown) are utilized... One pump is used exclusively to pump fuel from the gas tank to the carburetor, while a 2nd pump is used to remove excessive fuel and return it to the tank.
This system ensures that the float bowl has the correct amount of fuel, at all times.
For use on 125cc and 250cc engines -- Price includes carburetor with jetting of 175 main, 58 pilot, and a DGJ or DGH needle. Pump assembly is included (not pictured)
