well ive found its near impossible to find a full exhaust for an 03 f4i...which is ridiculous.. are there any headers that will directly bolt on to the 03 f4i..i have an aftermarket scorpion slip on exhaust but after hearing a zx6r with full two bros exhaust on it...i fell in love and want one myself

 

It's because there is very little if anything to gain out of a "full system". The stock headers already have excellent flow.

 

ive heard otherwise...and sound quality is different as well, was riding yesterday with 2 guys on zx6r's and they had identical exhausts...1 had a slipon two bros and one had a full two bros system...guess which was louder/ throatier/ deeper and if there were little to no gains why would they make em for other bikes? lol

 

For the cost to gain it is very expensive.

As the 2 bros site mentions that on a 600RR it is a max gain of 5HP and 1ft/lb of torque (With full exhaust and a dyno tune)

$1,200 full exhaust
$400 Power commander V
$400 dyno tune

So if $2,000 is a good cost for 5HP then all the power to you, but I would definitely rather have a bike worth $2,000 more as you will never get close to that in re-sale (Maybe an extra $200-$400)

 

true that...never saw the 5hp on the sight...im looking for a loud pipe and a can that isnt 4 feet long like my scorpion >_> im gonna cut it down but if im not happy ill be looking for one...whats the top 3 loudest?

 

Because other bikes are not F4i's. Every motor and exhaust design is different. Your not even comparing the same make of bike. F4i's have exellent headers from the factory. Other bikes don't, thats all there is to it. But for the record Arrow used to make F4i headers, not sure anymore.

 

Two Brothers are quality & loud.

 

Akrapovic Full Exhaust
seen this on ebay today. Not worth a grand to me, but they do exist.

 

I just got a Kerker full exhaust for my F4i. It sounds better and power has increased a little. I got the full exhaust brand new for what most slip ons cost

 

@2wheelfury and how did you manage this??