Instructions for fitting Thunderbike mufflers (2 or 3 pipe system) to the Triumph Rocket 3

1. Rocket 3 Exhaust kit Fitting Instructions
1. Remove R/H silencer heat shield ( retained by 2 button head Allen bolts)
2. Remove L/H silencer heat shield ( retained by 2 button head Allen bolts)
3. To remove both R/H mufflers from bike first remove the rear foot peg assembly and
rear foot peg mounting cover (retained by 2 button head Allen bolts and the foot
peg bracket). Remove the muffler to bracket bolts from the lower muffler to
separate the two mufflers. Then loosen the clamps on both mufflers before
removing the mounting bolts from the mufflers and gently sliding them off the cat
box.
4. To remove the L/H muffler, first remove the rear foot peg assembly and rear foot
peg mounting cover (retained by 2 button head Allen bolts and the footpad bracket).
Then loosen the clamps on the muffler before removing the mounting bolts from the
muffler and gently sliding it off the cat box.
Thunderbike Engineering Ltd
2/46A Muritai Street, Tahunanui, Nelson 7011, NZ
+64 (0)3 548 5787
parts@thunderbike.co.nz www.thunderbike.co.nz

2. 5. Remove the Cat box (large steel box structure that houses the Exhaust Catalyzer). It
is retained by one fastener on the right hand side and a peg on the left hand side. If
this is difficult it may be necessary to slacken the exhaust header to allow the
header to move.
6. Install the Thunderbike collector in place of the standard cat box using the larger
O.D gasket supplied do not tighten the clamp fully at this point.
7. Install the 2 right hand mufflers upper first then the lower using the gaskets
supplied (upper muffler is attached using the foot peg bracket and a hex bolt).
Attach the lower pipe by first sliding over the collector then bolting to the upper
muffler. Again do not tighten the bolts and clamps at this point.
8. If you have the 3 pipe system loosely fit the left hand muffler at this point note this
muffler does not use a gasket
9. With all mufflers loosely fitted make sure that the heat shield mounts line up and all
the bolt holes line up. Once you have checked this tighten all muffler clamps and all
muffler mounting bolts.
10. Refit chrome covers to foot peg assemblies and mufflers then start engine and
ensure that bike is running smoothly and exhaust joints are sealing.
Thunderbike Engineering Ltd
2/46A Muritai Street, Tahunanui, Nelson 7011, NZ
+64 (0)3 548 5787
parts@thunderbike.co.nz www.thunderbike.co.nz