High-G FJR Junkie!
Join Date: Jan 2013
Location: Millgrove, ON, CA
I think all same restrictive-wise. Cats in the headers these days overdesigned (in a larger collector box) to flow a little more than goes into them. Some brands of bikes (ST1300, e.g.) have cats in the first part of the muffler, so aftermarket pipes will be much lighter and don't usually have cats.
FJR mufflers have a couple of baffles and a coupla perforated tubes, all pretty much equal. Aftermarkets are straight thru.
Keep yer stick on the ice....
2014 FJR1300A - Root Beer (sold)
2009 CBF1000A - Sienna Red
1999 VFR800Fi - Pearl Shining Yellow