Yamaha YZF-R1 2002-2021Increased horsepower Increased torque Improved throttle response Improved fuel efficiency Direct OEM replacement Made in USA Enhance the mid range grunt and linear torque with Hi Performance Energycoil on your R1. Improved throttle response and strengthened spark duration all the way to redline. By providing a longer hotter duration spark event ensures a more complete combustion burn delivering increased power and a cleaner smoother running engine.
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