California. Still not satisfied with the fierce power Kawasaki ER-6n or Ninja 650? To increase speed performance, simple steps, simply by increasing the exhaust header pipe. Two Brothers exhaust manufacturers release new products, the all-new Two Brothers Racing (TBR) and claimed to be able to raise the power up to 7.5 hp (79.6 PS of power to start 72.1 hp) at 10,000 rpm.
