Spaco (Dellorto) SI Carburetor 20/17 D - Vespa P/PX, Stella caliper Pulley 16x13 Sliding Roller Weights

Pulley 16x13 Sliding Roller Weights

5" screen height above headset cutout for effective wind and debris deflection

This set provides a 22% increase in up gear ratio over a stock 13*40 gear set

and 171cc GY6-based scooters

and 9g (Sets of 6 each)

Spaco (Dellorto) SI Carburetor 20/17 D - Vespa P/PX, Stella caliper Pulley 16x13 Sliding Roller WeightsRestore the crisp throttle response and reliable idling of your classic Largeframe with the Spaco Si 20 17 D Carburetor. Manufactured in India under strict license from Dellorto, Spaco is the only company authorized to produce these legendary SI series carburetors to original Italian specifications. This 20 17 non injected model serves as the perfect OEM replacement for 2 port vintage engines and provides a significant performance upgrade for older