At Progressive Parts we have been fortunate enough to fit and test many of these systems and you can genuinely see where the extra money has gone. Beside the systems being like a work of modern art, their perfection is not just skin deep.
Moreover some exhausts give a great sound but leave a constant drone when cruising. Not with Kline, the 997.2 system we tested recently sounded smooth and quiet when cruising, however when on throttle all hell broke loose, all without valves and bypass pipes
~ that is the genius that is Kline.
Inconel 625 - Just try finding a company who can or is willing to work with this material. It is amazingly difficult to weld and manufacture however it's strength means it can be made incredibly thin and therefore less than half the weight of 304 Stainless Steel or Titanium.
This material is the choice of the best, which is why it is used to make the exhaust systems for F1 cars. If you want the best exhaust systems on the planet you have found them.
Carbon fibre - Kline use this well known lightweight and strong material for their exhaust tips, on many systems you can also choose to re-use your existing tips if you want the stealth look.
Titanium - A great all round material. While not as light as Inconel it's still light and strong (plus the heat of the exhaust turns it some really cool looking colours!)
Stainless 304 - Possibly the most popular material for exhausts. It will not corrode like the standard mild steel systems.