I have an 06 F4i and i got the Delkevic exhaust for it. I could not be happier with the quality of it and the sound that it produces. For $150 I don't think there is anything out there that can come close to it. The sound without the DB killer (in my opinion) is the perfect tone and volume. I originally wanted a Two Brothers but didn't have the money to buy one. I personally would go with the Delkevic because it's good quality and has a really good tone and volume to it. If you would like some pictures or videos let me know.

 

Ripcus- post a vid if you can. with idle, and possibly a fly by or ride by.
I currently have a fabricated 2 bros from an atv and im looking at a new exhaust.

Thanks man

 

I run a Yoshimura Tri-Oval CF. Its a great exhaust w/a great sound that doesn't break the db scale.

 

I have a, well . . . a Jardine RT-1 (it runs in the family) and I love the tone of it. The only draw back is your gas mileage will drop a little bit cuz you'll love how it sounds in the 7k RPM range. They do make Quieters for the m as well.

 

Does the Delkevic have the slot for the O2 sensor in the 06 f4i? I emailed them to find out, but haven't received a response in weeks. That makes me weary, bad customer service is something I try to avoid.

 

Ripcus, what model/size do you have?

 

According to their site it does on the one I looked up for an 06. Just go there and look up the one you want for your bike.

 

I wanted a very Shorty exhaust with a deep tone, I bough a 08 GSXR exhaust an cut it to fit my F4i, i remove the heat shield and I love it...

 

We need pics.

 

Yes, it has a bung for the O2 sensor and if you have a bike without one it comes with a pug for it as well. I have the 14" oval stainless steel stubby. I personally think it looks really good. I will try and post a video tomorrow of idle. I will unfortunately be unable to get a video of fly by as we have gotten our first snow fall of the season tonight.