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.
- 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
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 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.
Important Exhaust Notes:
â€¢ 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. â€¢ 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 thereâ€™s a manufacturerâ€™s defect. â€¢ 2015 & Up XL models may need an O2 sensor adaptor to be installed correctly. â€¢ DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA
For more info, check out a video walk through with Todd.
SHOTGUN EXHAUST PIPES
Remove nuts from exhaust flanges at cylinder heads (front & rear).
Sensors (front & rear).
Remove muffler munting bolts, & then the complete exhaust system.
Remove pulley cover, disconnect brake rod & then remove the crossover pipe
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One major update for Strange Days 9, is that the flat track racing will ONLY take place on Friday night, July 12th 2019. This should make everyone else that's not looking to compete, and just have a good old time happy! Saturday July 13th will be all about the chopper show and old bikes that fill the grounds each year; as well as the amazing live tunes that will be cranking all day and night. (More on that stellar music lineup coming soon!) So get your hot shoes ready for Friday, and set your barefoot party feet free on Saturday!
These pipes are small diameter 1 1/2".... I guess back in the day, the factory felt the K Model 750cc side valves worked best with these smaller diameter headers? Similar sized to the ports, etc. I always like the big, free flowing straight pipes, but so far, this thing seems extra responsive and hopefully it will help bring back some low end to this thing . . ? Factory stock early Sportster muffler. It's got a set of -60R KR heads on it, and I resleeved the cylinders, new valves, guides, etc. The Delorto PHM38 is my new carb-of-choice (if you don't want to run an M53 Linkert). I haven't really rode it around yet, so I'm sure I'll have some tuning issues coming up. Hopefully not - is always nice ! I added my set of -60 aluminum wheels (I'd been saving for who know what?) and figured I may as well start using some of this stuff.... One thing is for sure, H-D made some pretty neat bikes back with the Ks and early Sportsters. Some of the neatest lookin' if done right.
Starting March 31 and running every third Sunday of every month til November at New Egypt Speedway, easy to get to, right down the road from Great Adventure. Follow us on Instagram for updates. Get in line early to gain vendor access - $15.00 per spot. See you soon!