Keihin Main/Main Air Jet Series Jets

Keihin Main/Main Air Jet Series carburetor jets (also called main jets and main air jets) are calibrated brass metering components for Keihin carburetors. Keihin is a leading maker of carburetors and fuel-related products, and it supplies fuel systems to major manufacturers such as Honda, Kawasaki and Yamaha.

Key Features:

• Main jets meter fuel at mid-to-full throttle, and main air jets help control air bleed into the fuel circuit.
• Round-head and slotted-head styles are used across Keihin carburetor families.
• The jet size is engraved on each jet, so you can identify its calibration.
• Changing jet size lets you adjust the air/fuel mixture for changes in altitude, temperature, exhaust or intake.
• Installation is simple with basic hand tools. Replace jets when they become pitted, cracked or clogged.

Each jet is sold under its own part number, with a range of calibrations available in the series. Keihin jets give accurate fuel metering, smoother throttle response and consistent carburetor tuning for motorcycles, ATVs and other powersports engines.