Trying to decide on what RB pipe to go for but am lacking some fundamental information and material from RB themselves, who´s kinda old school and grumpy regarding giving out information and providing me the answers that I need. So, I´m looking at the RB Racing LSR Challenge pipe (the chrome one in the picture below) vs the RB Racing LSR Long pipe (black on the right), but have no clue what difference the louvered baffle + the extra inches of length in the long pipe does for sound and perfoemance vs the shorter unbaffled version on the same parameters. Bike is a 103" 2014 Breakout.

What needs to be considered is the mods that´s been done to the bike before hand which is K&N airfilter, MR103 cams + Wood 222 cams (have both sets of cams to choose from at the garage) together with a custom tune through a TC master here in Sweden. So my question is, what experiences and knowledge do you guys have regarding these two pipes and the differences they make in comparison? Some kind of alternatives to consider out of RB´s assortment or variants to make on the two pipes mentioned?

Any kind of videos, social media accounts or such that can give me some clarification will be very much appreciated too. NOTE: I´ve scoured YouTube for videos..



RB Racing LSR Challenge to the left, longer version with louvered baffle to the right.

 

All things being equal, the short pipe is better at the upper rpm range at the cost of the bottom end, the long pipe will have great bottom and mid, and may be just a little short on top. That is the over simplified explanation.