Engine
High Flow Fuel Injector 270cc
270cc/min fuel injector for KLX250/300. Verified flow rate directly from factory - no guessing.
- +270±5 cc/min flow rate (verified)
- +22.7% more fuel than stock
- +Direct replacement - no modification needed
- +Factory sourced, not random eBay quality
Weight: 85g
Overview
Upgrade from the stock 220cc/min injector to this 270cc/min unit. Provides 22.7% more fuel capacity - ideal for KLX300 or big bore builds.
Specifications
| Spec | Value |
|---|---|
| Part Number | 15710-21H00 |
| Flow Rate | 270±5 cc/min |
| Stock Flow | 220 cc/min |
| Increase | 22.7% |
| Compatibility | KLX250 / KLX300 (all years) |
| Origin | Factory direct (China) |
Why Buy Here
This is a Chinese clone of the Suzuki GSX-R1000 injector. What matters is quality control.
Random eBay/AliExpress sellers don't verify flow rates. We've seen injectors advertised as 15710-21H00 that actually flowed 220cc. Sometimes they just send a completely random injector with "380cc" stamped on the box. Either starving your engine or drowning it.
These injectors come directly from the factory, are personally tested, and verified for correct flow rate (270±5 cc/min). You get what you pay for.
Installation
Direct bolt-in replacement. Located on the throttle body. Takes 10 minutes with basic tools.
When You Need This
- KLX300 with open intake/exhaust
- KLX250 with 300cc kit
- Any build exceeding stock airflow
For precise fuel tuning across RPM ranges, pair with a JDM ECU or fuel controller.
Related
- ECU Tuning Guide - Fuel management options
- Big Bore Kit Guide - Displacement upgrade