They look like some quality products. This is what I found on them just real quick.
Each and every system is designed to increase power, add acceleration and throttle response, reduce weight and offer a new deeper throatier sound. We try to keep sound levels to a minimum without sacrificing any power or performance. We also try to keep all of our systems at or below a 96 sound decibel reading. Each kit comes with installation instructions, proper mounting hardware and proper jetting for summer riding at sea level if changes are needed. Most kits come with a jet chart as well. Our technical department can give you proper jetting specs for custom applications as well. With all full exhaust kits we also suggest the use of one our clutch kits to ensure that the machine is operating at it’s suggested rpm with the new exhaust system installed.