QUIET
BAFFLE
Quiet baffl e /N 21301 is available for this
system. The quiet baffl e will lower the sound
level by 2-3db on average.Contact your local
dealer to order.
VANCE & HINES EXHAUST
SYSTEM INSTALLATION
WHEN YOU KNOW THE DIFFERENCE
1. Check condition of stock exhaust gaskets. Replace if damaged or
worn.
2. Install mounting bracket (stamped 383- ) in the original
bracket mounting position, using two 10mm bolts and nuts
(Supplied)(Figure 1).
3. Remove head pipes and heat shields from protective packaging.
lace each heat shield on a non-abrasive surface such as a blanket
or carpet. Using a felt tip pen, mark the outside edge of each
heat shield to show location of hose clamp mounting clips (Figure
2).
4. Lay head pipes into their respective heat shields. Loosely install
hose clamps by feeding tail end of clamp into heat shield clips
(Figure 2). Take note of screw head direction (Figure 3). Screw
head should be accessible when system is installed on motorcycle
for adjustment purposes. Use #20 hose clamps for head pipe
areas and #28 hose clamps for muffl er areas.
5. Using stock nuts, carefully install front head pipe into exhaust port
(Assistance may be required). NOTE: Do not tighten at this time.
6. Slide nutplate inside bracket welded to backside of muffl er body
(Figure 4). While holding nutplate in place, attach muffl er body to
mounting bracket 383- using two 5/16”x5/8” fl ange head bolts
(Supplied). Leave them loose at this time.
7. Repeat for rear head pipe.
9. Align exhaust pipes so they are parallel when viewing from the
right side of the bike.
8. Tighten cylinder port exhaust nuts on front and rear cylinders.
Tighten the fl ange bolts on both muffl ers. NOTE: Adjust angle of
bracket 383- to aid alignment of head pipes.
10. Tighten bolts securing mount bracket 383- to frame.
11. Align heat shield tips so that muffl er bodies protrude 1/4” (Figure
5). Tighten all heat shield clamps.
12. Reinstall right side footpeg.
13. Reinstall side cover.
14. Check for adequate clearance between all exhaust system
components and motorcycle accessories prone to heat damage.
15. After installation and before starting motorcycle, completely
clean pipes and muffl ers with cleaning solvent and a clean, soft
cloth that will not leave a residue. NOTE: Any residue, oil, or
fi ngerprints will stain the chrome when the metal heats up.
16. Be sure to tighten all hardware before starting motorcycle.
EXHAUST CARE - HELPFUL HINTS TO AVOID DISCOLORATION OF EXHAUST SYSTEM
1. When installing a new set of chrome pipes, make sure your hands are clean and
free of oil. After installation, thoroughly clean pipes with a soft cloth and cleaning
solvent that will leave no residue (chrome wax / polish, glass cleaner, alcohol,
ammonia, etc...) before starting the motorcycle.
2. Follow owners manual instructions regarding use of the choke (starter enricher). If
left on longer than recommended, discoloration may be accelerated.
3. Avoid long periods of idling as this can cause discoloraion.
4. Intake leaks can cause the engine to run lean and overheat, this could lead to
discoloration.
5. Make sure there are no exhaust leaks at the junction of the exhaust pipes and
cylinder head. We recommend replacing gaskets if they are worn.
VANCE & HINES OPTIONAL ACCESSORIES
RE-JETTING FOR CARBURETED MODELS:
Re-jetting the carburetors will result in realizing the “full” potential of this performance exhaust
system. Vance & Hines offers Jet Kits for most applications, call (562) 921-7461 for more information.
LEASE NOTE:
Every effort is made for Vance & Hines Exhaust Systems to provide improved cornering clearance.
However, due to design and space limitations on some motorcycle models, ground and cornering
clearance may not be improved and in some cases may be reduced. Be sure to follow proper
installation instructions.
FIGURE 5
H425IN Rev. 1.0age 2 of 4