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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
The 300R in stock form comes out of the gate with a good 3-4 more peak and more down low
we've been able to play around with different fuel controllers and intakes to see if we could further unleash the machine and improve performance
Compatible with AutoTune
brushed aluminum billet clamps will be included with your purchase
it's time for a repack
ECU Flash Service - Yamaha Grizzly 700 ECU (CDI) 2025-2026 UPOMIAH48408 The 300R in stock formBarkers Exhaust ECU Flash Service 20252026 Yamaha Grizzly 700 This service re flashes your stock OEM ECU CDI with a custom calibration developed specifically for Barkers Exhaust systems on the 20252026 Yamaha Grizzly 700. From the factory, these newer Grizzly 700 models are extremely sensitive to fuel and airflow changes. When a performance exhaust is installed, the stock ECU often triggers a check engine light. Our ECU flash corrects this behavior
