GYTR® Fuel Controller by Dynojet® Research, Inc.

We have teamed with Dynojet® Research, industry-leading manufacturer of the Power Commander®, to produce this "piggyback"-style fuel management system for the YFZ450R and YFZ450X. Comes pre-programmed with maps developed by Yamaha factory technicians to work with multiple GYTR performance upgrade configurations.

This accessory is restricted to closed-course competition only. See notes below.

• Fits '10-'11 YFZ450X & '09-'11 YFZ450R

Note: All YFZ450X and YFZ450R models are regulated by the EPA. Because this accessory affects emissions, using it constitutes illegal tampering punishable by law unless the vehicle is only used in closed-course competition.

Note: This performance accessory does not meet California standards for off-road recreational vehicle usage.