The Competition Kit replaces the stock ECU and includes a new throttle stop to allow wide open throttle.
Allows ECU adjustments via the GYTR Power Tuner sold separately
YAMAHA WR450F GYTR COMPETITION KIT 2GCE9500V000 The Competition Kit replaces the stock ECU and includes a new throttle stop to allow wide open throttle. *Kit includes YZ style throttle screw *Allows ECU adjustments via the GYTR Power Tuner sold separately *Specific maps for tuning capabilities available for free on the GYTR Power Tuner product page on the parts & accessories website This accessory affects emissions; installation on EPA-regulated 2006 or later WR models constitutes unlawful tampering except when used solely for closed-course competition. FIT WR450F(2018, 2017, 2016)