HRC equivalant

[BigVince]

Is there an equivalant upgrade for the YFZ that is simmilar to the HRC kit for the TRX?

[zeppelin]

retard your exhaust cam one tooth, it helps alot and it is free. if you want more yamaha sell gytr (genuine yamaha technology racing) parts likes exhaust air filters etc

[Toadz400]

The equivalent to the HRC kit would be to do the cam mod (retard the exhaust cam one tooth), take off your air box lid, and take out the spark arrestor. Don't forget to rejet also when you do this.