2023-2025 Yamaha YZ450F - Dynamic Racing Dual Injector Kit (Second Injector) Upgrade the Yamaha YZ450F's intake and fueling system with our cutting-edge Dual Injector Kit, designed for maximum power, reliability and efficiency! Product Features: Enhanced Power Delivery: The dual injector system maximizes throttle response from roll-on to the rev limiter. -Complete Installation: Kit comes fully installed with a new airbox, dual injector system, fuel lines, and injector loom for easy connection to the Vortex ECU (sold separately). -Convenient Installation: No need to exchange your old airbox; a brand-new unit is included. Plug and play! -Re-flashing Service: Send us your ECU for just $250, which includes preloaded dual injector maps. -ECU Maps: Receive a locked map for your Vortex ECU (only if you are another engine shop). Message for details. -Compatibility: Designed specifically for 2023-2025 Yamaha YZ450F models. For more information please feel free to message us.