Hand-made-in-the-USA slip-on exhaust system for the Yamaha FZ1. Huge gains in horsepower (+6hp) and torque (+5ft./lbs.) are achieved while eliminating 11 lbs. of dead weight all while retaining the center stand! This high performance exhaust system features stainless steel tubing and a carbon fiber silencer with our new tapered titanium conical end cap. System gives an overall weight savings of 11 lbs. compared to stock exhaust system.
Graves Slip-on Exhaust System (with PCIIIUSB & Ignition Module) = 138.2 hp (+7.9 hp)
Graves Slip-on Exhaust System (with PCIIIUSB) = 136.4 hp (+6.1 hp)
Stock Exhaust System = 130.3 hp
For closed course competition only.