I successfully got the Yoshimura muffler installed on my 2014. As info, here are the tools needed: 12mm socket/rachet, 12mm wrench, 10mm wrench, 5mm long hex wrench, 5mm short hex wrench, rubber hammer (to spread the sides of the center stand bracket), something sticky (to hold the 2 spacers in place on the new bracket) and a light to see where things go. Honda did not provide much room to work underneath the CB1100.
Removing the stock muffler was easy. The new bracket was a bear to install, as it fit too snugly. Thus, some friendly persuasion with a rubber mallet convinced it to spread apart slightly. Then, I had to stick the washers on the inside of the bracket and carefully align the holes to insert the Yoshi supplied bolts. Just follow the instruction sheet which comes with the muffler and you will be fine. The pictorials are very accurate.
The order:
Place cycle on center stand. Remove stock muffler, remove the bolt on the right side of the swing arm bracket, attach the rubber inserts in the Yoshi stop bracket, install the stop bracket on the swing arm bracket, making sure the large spacer is on the right hand side of the bracket. Tighten bolts, slip on new Yoshi muffler using their clamp. The OEM gasket is not used. Slip on Yoshi clamp strap and tighten bolts, wipe off muffler with rubbing alcohol to remove oil film, fingerprints, etc. I used a pair of nitril gloves to handle my muffler. Note. The muffler will be very close to the axle nut so remember to use an open end wrench to loosen/tighten same. There will be very little room between the muffler and axle.
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