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STOCK EXHAUST  SYSTEM REMOVAL

TOOLS

REQUIRED

HARLEY-DAVIDSON

®

 DYNA

BIG RADIUS 2-2

INSTALLATION INSTRUCTIONS

PART# 26071

1.  Remove seat to gain access to rear oxygen sensor connector. Unplug 

sensor and feed end of wire through frame so that it is free from 

motorcycle. NOTE: Pay attention to wire routing for re-installation.

2. For 

2006 to 2011 models

 remove two bolts holding rectifier onto front of 

frame (near front tire). Open plastic cover to gain access to front oxygen 

sensor connector. Unplug sensor from ahrness and feed end of wire 

through to free it from motocycle. For 

2012 to later models

 the connector 

is located under the rectifier at the front of the motorcycle.

3.   Loosen heat shield clamps on both the front and rear head pipes.

4.  Remove front head pipe clamp bolt.

5.  Remove the bolt that attaches rear head pipe clamp to mounting bar.

6.  Remove two cylinder exhaust port flange nuts from each head pipe, 

located at the cylinder head.

7.  Remove the complete exhaust system and set aside. Assistance may be 

required.

8.  Remove stock mounting bar and the studs in the transmission cover.

9.  Remove left bolt below the transmission cover. Position mounting bracket 

391-P over mounting location to determine which bolts to remove (Figure 

1). Install this bolt in the top hole left vacant by the new bracket.

10.  Carefully remove the flanges and circlips from the stock exhaust system us-

ing snapring pliers. NOTE: Replace bent or damaged circlips. 

11.  Remove stock exhaust gaskets and replace them with the supplied 

 

exhaust gaskets. NOTE: Replacement gaskets HD Screaming Eagle 

#17048-98 or equivalent 

12.  Remove stock oxygen sensors and set them aside for they will be re-used 

on new system.

BRACKET 391-P

TRANSMISSION COVER

REMOVE ALLEN BOLT 

PRIOR TO INSTALLING

MOUNTING BRACKET

USE 5/16"-18 X 1-1/2" HEX 

BOLTS AND WASHERS (SUPPLIED)

USE 5/16-18 x 2.0" HEX BOLT

AND WASHER (SUPPLIED)

INSTALL ALLEN BOLT REMOVED 

FROM LOWER HOLE

INSTALL SPACER BETWEEN 

BRACKET AND MOTOR

D942IN Rev. 1.0

FIGURE 1

READ ALL INSTRUCTIONS BEFORE BEGINNING INSTALLATION

Page 1 of 4

Flat blade screwdriver

 and #3 Phillips Head
5/16” Nutdriver

1/2”,  3/4”, 7/8”, 14mm,

22mm Combination

wrenches

3/16” & 1/4” 

Allen wrenches

Snapring pliers

3/8” Ratchet & 

extensions

1/2” Socket

7/16 & 9/16 Deep 

Sockets

FIGURE 2

Installing 

circlip

Flange

MORE POWER : LESS NOISE

Congratulations, you have purchased the finest exhaust system for 

your motorcycle on the market. Your Vance & Hines exhaust system is 

designed and crafted for maximum performance, a perfect fit, a great 

sound and unbeatable style. Please follow the installation instructions 

below and if you have any questions, please call our technical support 

line at (562) 926-5291. 

Attention installer (if other than owner), please forward this instruction 

sheet to the owner of this product. These instructions contain valuable 

information to the end user.

Summary of Contents for 26071

Page 1: ...remove the flanges and circlips from the stock exhaust system us ing snapring pliers NOTE Replace bent or damaged circlips 11 Remove stock exhaust gaskets and replace them with the supplied exhaust gaskets NOTE Replacement gaskets HD Screaming Eagle 17048 98 or equivalent 12 Remove stock oxygen sensors and set them aside for they will be re used on new system BRACKET 391 P TRANSMISSION COVER REMOV...

Page 2: ...tween the two muffler bodies is consistent from front to rear and tighten exhaust port flange nuts Figure 6 9 Tighten flange bolts securing muffler bodies to mount bracket 391 P 10 Using the 28 hose clamps install the muffler heat shields with the D308HC on the front head pipe and the D309HC on the rear Take note of screw head direction Figure 4 NOTE Do not tighten at this time 11 Adjust the heat ...

Page 3: ...s warranty does not cover any product subject to abuse misuse improper installation or modification WARRANTY PARTS NOT SHOWN 391 P Bracket x 1 D418FC Front head pipe assy x 1 D419FC Rear head pipe assy x 1 D400HC Front heat shield x 1 D403HC Rear heat shield x 1 D308HC Ft muffler heat shield x 1 D309HC Rr muffler heat shield x 1 HARLEY DAVIDSON DYNA BIG RADIUS 2 2 INSTALLATION INSTRUCTIONS PART 26...

Page 4: ...irflow changes so you need a fuel management system that adjusts your air fuel ratio to match the changes That fuel management system is Fuelpak Fuelpak adds and takes away fuel allowing for a more precise range of refinement in your air fuel ratio Get the perfect fuel management combination with your Vance Hines exhaust system get Fuelpak For more information visit the tuning center at fuelpakfi ...

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