motorcycle fuel injector for Yamaha 5S9 4C6 125CC - main photo
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Motorcycle Fuel Injectors

High Quality Motorcycle Fuel Injector For Yamaha 5S9 4C6 125CC

Flow-matched motorcycle fuel injector Yamaha 5S9/4C6 for Yamaha 5S9 / 4C6 125CC EFI motorcycles (6-hole nozzle). Brand-new, 100% tested before shipment, backed by a 3-year warranty.

Specifications

OE Number
Yamaha 5S9/4C6
Reference Number
Yamaha 5S9 / 4C6
Brand Reference
Yamaha
Application
Yamaha 5S9 / 4C6 125CC EFI motorcycles (6-hole nozzle)
Condition
Brand-new, OEM replacement
Flow Matching
Flow-matched set
Warranty
3 years
Testing
100% tested before shipment

Product Overview

The Yamaha 5S9/4C6 is a motorcycle fuel injector fitted to Yamaha 5S9 / 4C6 125CC EFI motorcycles (6-hole nozzle). Each unit is flow-matched and tested for a consistent spray pattern, so the engine receives the right amount of fuel for smooth idle and throttle response.

Quality & Testing

Every injector is inspected and flow-tested before shipment. We focus on accurate fuel flow, a consistent spray pattern, and reliable sealing. Products are brand-new and backed by a 3-year warranty.

Fitment

Suitable for Yamaha 5S9 / 4C6 125CC EFI motorcycles (6-hole nozzle) applications using injector reference Yamaha 5S9 / 4C6. Please confirm the shape of your existing injector and the model code before ordering.
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