has anyone ever heard of an HR1 exhaust
 

ok there is this company i guess they are called hard rock. they claim to have a fully adjustable slip on shortie exhaust. offers settings for low end, mid range, and top end power. from the video on their site the exhaust sounds pretty good. i was wondering if anyone knows anything about this product because i havent found much literature about them but the price is right and the sound is just what i was looking for.

I'm the only one I know of with that exhaust. I've never heard much about it, then again I've never really researched it. But, I love the sound and would use them again if I had another sportbike. It is adjustable, changing both sound and power distribution. I have the shorty riot series.
Oh yeah, depending on the bike, you may need to cut your fairing down there a little. I have an 02 F4i and had to do a little cutting. I love the look though.

i just picked up an 08 cbr600rr practically brand new only has 900 miles on it and i put on the last 25 test driving it. i was going to go with the shortie under tail. that riot did look pretty cool but i never really liked that location. any recommendations on a good under tail for an 08 600? i want something that doesn't stick out too far from the end of the rear cowl. thats why i didn't go with a two brothers or a jardine like i originally planned.

Oh wait, your have an RR. They mount on under the tail. On the F4i, they mount on the side of the tail and sticks out too much for my liking. If you ask in the 600RR section, those guys might be able to give you some advice. Love that repsol!

I have there slip on for my 07 600rr. Looks and sounds great.