Description
ProX main jets are precision-manufactured replacement jets designed for use in compatible Keihin carburetors. They provide consistent fuel flow and accurate sizing, making them an excellent choice for carburetor tuning and everyday replacement.
The main jet controls fuel delivery primarily from approximately ¾ throttle through wide-open throttle. Changes to the exhaust, air filter, carburetor, engine porting, elevation or outside temperature may require a different main-jet size.
Features:
- Manufactured by ProX
- Designed for compatible Keihin carburetors
- Precision-machined for consistent fuel flow
- Clearly marked jet size
- Available in multiple sizes
- Sold individually
Please verify the jet style and size required for your carburetor before ordering. Keihin carburetors use several different main-jet series that are not interchangeable.
Jetting requirements vary according to engine modifications, fuel, premix ratio, elevation and weather conditions. Always begin with a safely rich setting and tune carefully. Running an engine too lean can cause overheating, detonation and serious engine damage.
