These are hight performance 50mm carbs.
Starting with proven Mikuni, each carburetor is hand assembled, then machined for annular discharge.
30 small holes in the neck deliver fuel instead of traditional booster in the middle.
Unlike oter carburetors on the market, there is no boosterin the middle, which allows all 50mm of air to enter the intake completely
evenly and unobstructed, providing more power and smoother throttle response.
All engine configurations will benefit from this design, while big size engines will additionally benefit from such large volume of air.