Polini PWK Carburetor Velocity Stack - 50.5mm Bell P/PX Series and related engine codes

and related engine codes

Upper headset cover replacement for CSC go

Brand:  DR

Inner Diameter: 15 mm

Total Piston Height: 36

Polini PWK Carburetor Velocity Stack - 50.5mm Bell P/PX Series and related engine codesThe Polini 50. 5mm bell mouth velocity stack is a direct bolt on intake funnel for PWK style carburetors. The flared bell mouth profile smooths airflow into the carb throat, reducing turbulence and improving throttle response across the RPM range. Includes set screws for a secure, rattle free fit. Carburetor not included. Bell mouth (velocity stack) style for improved airflow and throttle response Inner diameter: 50. 5mm fits PWK style carburetors