Main Jet #100; SI Carbs
Original price
$6.00
-
Original price
$6.00
Original price
$6.00
$6.00
-
$6.00
Current price
$6.00
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
This is the small, cone-shaped jet at the bottom of the main jet stack. They come in various sizes ranging 82-165. Most vintage Vespas will use one in the 85-116 range, though performance-modded engines can drink a lot more gas and use much bigger jets. The larger the number, the more fuel will flow through. Jetting is something that takes trial and error. See our blog page of for more info.
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