roughly, how much does the aftermarket exaust weight? and what is the weight difference compared to stock? (H22/H23 should be approximately same)

 

Every exhaust is different, but generally they don't weigh much more than stock

 

they should be way lighter than stock: lighter material, smaller muffler etc. just wanted to know the difference

 

Well, bigger pipe, equal resonator, smaller muffler, should be pretty close

 

If you are looking for something light, look at burnsstainless.com. They are a member here. They carry Inconel exhaust systems. Very light weight.

 

My entire Buddy Club system weighs way less than the stock muffler.

 

I'm actauly way to fat for my bathroom scale to weigh both me and my stock exhaust parts... But if I had to venture a guess I would say the Apexi GP pipe I have on my 4TH weighs in at close to half of the stock system. Maybe a bit over... The pipeing was about even... But the can was half or less, easy.