BGM Air Fuel Mixture Screw Dellorto PHBH & PHBL Carburetor Steering & Frame This is a full bolt-on

This is a full bolt-on modification and should not require any modification to the Ruckus

We love everything about the 61mm (170cc) KOSO but we wanted a little more displacement

and GY6 style throttle tubes

PC20 Intake Manifold is Required and modification to bottom of the carburetor is required for proper clearance

Soft cotton is used to protect the windshield

BGM Air Fuel Mixture Screw Dellorto PHBH & PHBL Carburetor Steering & Frame This is a full bolt-onBGM Air Fuel Mixture Screw is designed specifically to fit Dell'Orto, PHBH, and PHBL carburetors. This air fuel mixture replaces and eliminates the stock version and allows for easy tuning and adjustment. You can now easily grab the end and adjust accordingly to get your 2 stroke dialed in. Although a very simple design, it has great features to provide comfortable and easy adjusting. It comes in all black to stay hidden and blend in with the darker