RD BGM Vespa 177 Cylinder Carburettor Jetting Kit (SI 20.15-17 A-D/20.20-26.26E/G/H) SECURITY To Fit 2T & 4T

RD BGM Vespa 177 Cylinder Carburettor Jetting Kit (SI 20.15-17 A-D/20.20-26.26E/G/H) SECURITY To Fit 2T & 4TRD BGM Vespa 177 Cylinder Carburettor Jetting Kit (SI 20. 15 17 A D 20. 20 26. 26E) The BGM177 is an easy cylinder to tune due to its linear power development. It gives a clear feedback if the engine is running too lean or too rich. This kit contains jets to ensure a clean basic tuning of the engine with a SI stock carburrettor. The tuning set refers to a conventionally built engine with BGM177 187 and so called box exhaust system. Due to their

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