Main Jet #110 for SI Carbs for Scooters & Mopeds
ITEM# TT-25669
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Description
Main Jet #110 for Classic Vespas and Performance Scooters
The Main Jet #110 helps control fuel flow in scooters, especially classic Vespas and performance models. This compact, cone-shaped jet sits at the bottom of the main jet stack and governs how fuel is metered into the engine. Choosing the right jet can noticeably affect how a scooter runs and how efficiently it uses fuel. It belongs to the group of key scooter carburetors & jets that let you dial in smoother throttle response and stronger power output.
Getting to Know Jet Sizes
Main jets come in a wide range of sizes, from 82 up to 165. Vintage Vespas generally use jets in the 85 to 116 range, whereas engines that have been modified often need larger jets to supply the extra fuel they burn. A bigger jet lets more fuel through to the engine, which can improve performance when it is properly matched to the modifications made.
Signs It May Be Time to Swap
Consider replacing the main jet if the scooter shows performance problems or if the engine has been upgraded. Changing the main jet is a routine part of tuning, since it allows fuel flow to be adjusted to what the engine actually needs. Finding the best setting often takes some trial and error, so keeping a selection of jets on hand makes that process easier.
Specifications
- Size: 110
- Position: Bottom of main jet stack
- Fits: SI carburetors (main jet stack) on scooters and mopeds; size #110
Fitment
How to choose: Pick a jet size that matches your engine's tuning needs. The number indicates the flow size, and higher numbers allow more fuel to pass (range 82-165).
Shop more: Scooter Carburetors & Jets · Scooter Parts
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