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DIY Tech Tip - How to Install Your New Lowbrow Customs Shotgun Pipes 04 and Up


This tech tip will walk you through installing our new Lowbrow Customs Shotgun Pipes for 2004 and up XL models. Whether giving you added ground clearance on a scrambler or tracker, or just for high-and-tight style on a rigid or swingarm Sportster, the Shotgun Exhaust Pipes from Lowbrow Customs make quick work of improving your motorcycle's look and sound. Quick and E-Z bolt-on install with the included heavy-duty mounting brackets and hardware. 

Lowbrow Customs Shotgun Pipes come in Chrome or Black.

Included in the package and extra info:

- Mounting brackets in your favorite color, black
- Mounting hardware
- Requires use of your existing stock exhaust flanges
- Compatible with Lowbrow Customs Cast Heat Shields
- Shotgun Exhaust Pipes include 02 sensor bungs to accept your stock 02 sensors, plug and play! Please note that while this exhaust is bolt-on fitment for 2004 - 2006 XLs, these carbureted bikes will need block-off plugs (not-included) for the 02 sensor threaded bungs.

Tools you will need for the job.

3/8 drive Ratchet  
Torque wrench
1/4 drive 5/16 socket with 1/4 nut driver for removal of heat shields
1/2 inch socket for removing and reinstalling the flange nuts.
External lock ring pliers for removal of rings on old exhaust and replacing on new pipes.
7/8 opened end wrench for removal of the 02 sensors and putting on the new pipes.
3/16 allen socket for removing and reinstalling the pulley cover
5/16 allen socket also to remove and reinstalling pulley cover. Needed for installing the new rear bracket back onto the pulley cover. Also needed for removal of the crossover mount.
T30 Torx bit for the removal of the brake rod and reinstallation.
2 x 1/2 inch wrenches for the back bracket nuts and bolts that connect the new pipes to the new bracket. 1/2 inch wrench will also remove mufflers

Let's get started.

Step 1 - Remove any heat shields on stock or existing pipes using a 5/16 socket with 1/4 nut driver.

Step 2 - Remove nuts from exhaust flanges at cylinder heads (front and rear) with 1/2 socket. 

Step 3 - Unplug O2 Sensors (front and rear).

Step 4 - Remove muffler mounting bolts with 1/2 wrench, and then the complete exhaust system.



Step 5 - Remove pulley cover using a 3/16 allen socket and a 5/16 allen socket, disconnect brake rod with a T30 Torx head and then you can remove the crossover pipe with a 5/16 allen socket.



Step 6 - Remove retaining rings & anges from stock exhaust using external lock ring pliers.


Step 7 - Re-install on new pipes. (note make sure the flange goes on first before ring and with the lipped indention facing out)


Step 8 - Remove O2 sensors with 7/8 wrench, & re-install on new pipes.


Step 9 -  Re-install pulley cover & install bracket from kit.


Step 10 -  Loosely install pipes on cylinder heads with 1/2 socket & rear nuts and bolts to the new bracket/pipes by hand.


Step 11 - Tighten the nuts on cylinder heads first with 1/2 socket, then tighten the nuts & bolts on rear bracket with 2 x 1/2 in wrenches. By doing this evenly you can achieve the straighter lines on the pipes. Don't forget to check you main rear bracket bolt and tighten as well.


Step 12 - Plug O2 sensors and TAKE A RIDE.

Before
After


Important Exhaust Notes:

• Note: As with any new exhaust, you may need to change carburetor jetting or use of an aftermarket fuel injection control module for peak performance.
• There is no warranty on exhaust pipes and mufflers with regard to any discoloration. Blueing is caused by tuning characteristics, cam timing, carburetor jetting, overheating, etc. and is not caused by defective manufacturing. No refunds on exhaust pipes once motorcycle is started unless there’s a manufacturer’s defect.
• 2015 & Up XL models may need an O2 sensor adaptor to be installed correctly.
• DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA

For more info, check out a video walk through with Todd.

SHOTGUN EXHAUST PIPES
www.lowbrowcustoms.com
A)
Remove nuts from exhaust flanges at cylinder heads (front & rear).
B) Unplug
O
2
Sensors (front & rear).
C)
Remove muffler munting bolts, & then the complete exhaust system.
D)
Remove pulley cover, disconnect brake rod & then remove the crossover pipe

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