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2002 -2016, Air-Cooled, Triumph Modern Classics
Cone Engineering
“Dominator Sport” and “Dominator Touring”
Installation Instructions
Bonneville/T100 (Touring or Sport Versions)
The Bonneville/T100 exhaust can be used with or without a center stand. Metal kickstand stops
and centerstand stops are mounted on the left side muffler. These mounts reuse the rubber
inserts from your stock mufflers. It is very important that they are installed for the stands to
function properly. If your rubber stops are missing you will need to purchase replacements from
a Triumph dealer. RETUNING AFTER INSTALLATION OF AN AFTERMARKET EXHAUST IS
ALWAYS RECOMMENDED.
• Remove and reuse stock muffler clamps. (If your stock clamps are not available, a replacement clamp
can be used but may not have as much clamping strength as the original. Some clamp designs have a
greater tendency to vibrate loose. Check tension regularly - but do not overtighten).
• Transfer the rubber kickstand stop, and centerstand stop (if centerstand equipped), from your stock
muffler.
• Remove rear passenger pegs.
• Remove stock mufflers.
• On your new mufflers, determine which is right and left. There are several ways to tell. The logos face
outward and upward. There is coding on the inward side of the rear bracket, and in the code you will
see an “L” and an “R” on the muffler.
• Install mufflers onto existing header. Use of a high-temperature sealant is advised on the connection
surface between header and muffler to reduce air leakage. DO NOT TIGHTEN CLAMPS YET.
• Install rear muffler mount at rear passenger peg. The bracket installs to the OUTSIDE of the rear
passenger peg mount, then the peg installs on top of the bracket. Install pegs making note that pegs fold
upward in proper direction and the nipples on the inside of peg seats in the slot of each muffler
mounting bracket. Hand tighten, do not torque pegs until you finish aligning the mufflers.
• Before tightening any hardware make sure mufflers are positioned equally in all directions - same
relative height, width and securely on header. They can be repositioned fairly simply by rotating the
muffler on the header or raising one side or the other on rear bracket.
o NOTE: If you have difficulty getting the system to align, you may need to loosen the headers at
the cylinder head, the “crossover tube” (under the forward portion of the engine), and the rear
header mount (approximately under the main foot pegs location). Once you’ve loosened these
points you will find a greater range of movement to align the exhaust.
• After checking alignment, complete the tightening all hardware – headers, clamps, mufflers, and
passenger pegs. Remember to retighten all parts on completion of installation.
Thruxton (Touring or Sport Versions)
The Thruxton models were NOT designed for use with a center stand, only a side stand, and
come with a replacement frame-mounted kickstand stop. RETUNING AFTER INSTALLATION
OF AN AFTERMARKET EXHAUST IS ALWAYS RECOMMENDED.
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• Muffler installation is the same as the Bonneville/T100 with the exception of the kickstand stop
installation. These models don’t have kickstand stops welded on the muffler, they use a bolt-to-frame
stop that is provided with the mufflers and is installed as seen in the following pictures.
“Mag Wheel”/Bonneville SE (Touring or Sport Versions)
The “Mag Wheel Bonneville” models were NOT designed for use with a center stand, only a side
stand, and come with a replacement frame-mounted kickstand stop. RETUNING AFTER
INSTALLATION OF AN AFTERMARKET EXHAUST IS ALWAYS RECOMMENDED.
• On the Mag Wheel your muffler bracket will install to the INSIDE of the passenger bracket. The other
Dominator versions mount to the outside of the bracket. Otherwise, installation is almost the same. One
additional recommendation is to use the large flat metal washer from the stock muffler rubber insert
behind the new muffler bracket and then the nut.
INSTALLING KICKSTAND STOP ON THRUXTON AND “MAG WHEEL”
This is the Thruxton and “Mag Wheel” Bonneville kickstand stop bracket and hardware provided with your
exhaust kit. It is shown with the rubber kickstand stop (from your stock muffler) already installed.
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This is the frame tab that you will attached the bracket to. It is on the left side “ear” on lower frame under
engine. It would be where centerstand would normally bolt.
Install on OUTSIDE of tab as shown. If mounted to the inside it can affect the kickstand alignment and
clearance to the mufflers. Remove rubber pad from stock mufflers and install on bracket.
Align stop bracket and kickstand. Complete final tightening. You can affect the kick stand distance from the
muffler by rotating the kickstand stop bracket clockwise/counterclockwise.
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LAST BUT NOT LEAST!
When finished with installation, wipe down mufflers with
acetone or rubbing alcohol to remove all fingerprints and oily
residue.
FAILURE TO DO SO WILL DAMAGE FINISH
OF MUFFLERS!
TYPICAL FITMENT ISSUES
• Modifications 1. Especially on older bikes where you are not the original owner, a previous owner may
have modified the bike. Check to make sure your model year and make by confirming the VIN matches
what you have been told. We’ve seen Bonneville modified into Thruxton, Mag Wheel into what looks
like Bonneville, important mounting locations like the tab for the kickstand removed or even the rear
passenger peg mounting bars removed.
• Modifications 2. Each model of bike has a header specific to that bike. The main difference is the
amount of “kick” at the end of the header where the muffler mounts. If your exhaust comes nowhere
close to fitting and you’ve tried all the alignment tweaks, it’s time to consider whether something has
been changed. Even if you are the original owner we have found a few models that had been modified
at dealer. This is more common on “customized” bikes.
• Missed instruction step. If it doesn’t fit, try going back over the instructions once more to see if you
missed a step.
• Following instructions for wrong model of bike. Make sure you are working with the correct section of
instructions to match your model.
• Damaged in shipping or production. While we make every effort to deliver you a perfect part, mistakes
can occur. If you have attempted all the previous steps, please contact our sales department via email at
