Expected weight saving and power gain vs. original exhaust:OptionPowerTorqueWeight Race Titanium Slip-On Silencer0.8 bhp @ 8300 rpm0.9 ft/lb @ 4950 rpm-3.3 kgTitanium De-Cat Header Set2.0 bhp @ 9150 rpm2.0 ft/lb @ 5300 rpm-1.1 kgTitanium De-Cat Link Pipe2.0...