Expected weight saving and power gain vs. original exhaust:OptionPowerTorqueWeight Race Black Titanium Silencer Slip-On Kit3.8 bhp @ 9450 rpm3.6 ft/lb @ 4500 rpm-6.3kgRoad Legal Titanium Silencer Slip-On Kit2.1 bhp @ 10100 rpm1.2 ft/lb @ 8100 rpm-1.3kgOptional...