Harley Exhaust Fitment Chart: Road to Perfect Fit For Your Harley

Exhaust systems that Harley uses in different series include 2-into-1, dual exhaust, and 2-into-2 with or without crossovers. The fitment chart helps you find the best-suited and most compatible exhaust system for your bike. 

But before making a move to get one you must be accurately sure which exhaust fits your Harley and satisfies your demand. Thus, you’ll get all your queries about Harley exhaust fitment in this article.

Types Of Harley Davidson Exhaust

Before jumping to selecting an exhaust system, it is crucial to know about all the exhaust systems that Harley Davidson offers. 

Besides, if you ought to get the performance or the iconic rumble sound of the Harley, you must know how each exhaust works.

2-into-1 Exhaust System

In a 2-into-1, two individual header pipes originate from the cylinders that merge through a single collector. Afterward, the exhaust gas is routed through a larger diameter end pipe and muffler. 

The catalytic converter could have been installed either inside the header pipes or the mufflers. 

You’ll get better performance in a 2-into-1 since the exhaust flow increases by merging the pipes to a larger diameter muffler.

Hence, the engine gets to breathe easily and efficiently. However, in this category, the exhaust note is not as deep and heavy as you may want it to rumble.

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2-into-2 Exhaust System

Similar to the 2-into-1, it has a dual originating header pipe from the cylinders. But the difference lies within the end pipes because this exhaust system ends with two individual mufflers.

A small secondary pipe connects the two exhaust pipes, creating a passage between the headers. It is usually situated close to the engine blocks.

• 2-into-2 With Crossover

The primary job of a crossover is to maintain the balance of exhaust flow from both cylinders. You’ll get enhanced performance and reduced back pressure on the engine. 

Besides if you want an aggressive sound, the 2-into-2  exhaust with a crossover can provide a deeper and reverb exhaust tone.

• 2-into-2 Without Crossover

A 2-into-2 exhaust system with no crossover has two separate pipes originating from each cylinder of the engine. They reside parallel to each other giving an aesthetic look to your Harley. 

This design provides a more classic look and sound note, as each cylinder is installed with a dedicated end pipe and muffler. 

However, no crossover pipe means unequal exhaust flow with increased back pressure and engine performance.

True Dual Exhaust Systems

If you are fond of touring bikes, you will get the dual exhaust systems assembled separately for each cylinder of the engine. It gives a more aggressive rumbling sound and enhanced performance. 

Another variant of the dual exhaust system is the 2-1-2 exhaust system. There is a merging center where the header pipes join for a better exchange of air before splitting to separate exhaust pipes and mufflers. 

The converging center is known as the collector which is absent in the dual exhaust systems. 

These exhaust systems are found in the Grand Touring series as there is a slight betterment in the torque and power due to a balanced exhaust flow.

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Harley Exhaust Fitment Chart By Model

To choose the correct exhaust system for your Harley, check out the following fitment chart and select the best suited one from the options.

Harley Sports

Model	Exhaust Type	Muffler Type/Catalyst position
Nightster	2-into-1	Inside Header
Sportster S	2-1-2	inside Muffler
Nightster Special	2-into-1	Inside Header

Harley Cruiser

Model	Exhaust Type	Muffler Type/Catalyst position
Lowrider S	2-into-2	Offset shotgun,   with catalyst inside muffler
Fat Boy 114	2-into-2	staggered; catalyst inside muffler
Street Bob 114	2-into-2	Offset shotgun,   with catalyst inside muffler
Low Rider ST	2-into-2	Offset shotgun,   with catalyst inside muffler
Fat Bob 114	2-into-2	Shorty Dual; Catalyst inside muffler
Softail Standard	2-into-2	Offset shotgun,   with catalyst inside muffler
Heritage Classic	2-into-2	Shorty Dual; Catalyst inside muffler
Breakout 117	2-into-2	staggered; catalyst inside muffler

Harley American Grand Touring

Model	Exhaust Type	Muffler Type/Catalyst position
Street Glide Special	2-1-2 dual exhaust	Tapered mufflers
Ultra Limited	2-1-2 dual exhaust	Tapered mufflers
Road Glide ST	Dual exhaust (crossover)	NA
Road Glide Limited	2-1-2 dual exhaust	4” tapered mufflers
Road Glide	2-1-2 dual exhaust	Tapered mufflers
Street Glide	2-1-2 dual exhaust	Tapered mufflers
Electra Glide Highway King	2-1-2 dual exhaust	Tapered mufflers
Street Glide ST	Dual exhaust ( crossover)	NA
Road King Special	2-1-2 dual exhaust	Tapered mufflers
Road Glide Special	2-1-2 exhaust	Tapered mufflers
CVO Road Glide Limited	Dual exhaust, (crossover)	NA

Harley Adventure Touring

Model	Exhaust Type	Muffler Type/Catalyst position
PAN America 1250 Special	2-1-1	Catalyst inside Header
Pan America 1250	2-1-1	Catalyst inside Header

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Harley Davidson Exhaust Fitment Tips

Before investing a huge amount of money for the upgradation purpose you must consider the following factors.

• Check engine compatibility with the preferred exhaust system.
• Choose the exhaust system according to the type of your Harley Davidson motorcycle. (Example: touring, sports, or cruiser, etc)
• For better sound slip-on mufflers can be used since the process could be cheaper.
• For performance and mileage, it is better to consider full exhaust system swapping.
• Check out for ground clearance and overall balance on your motorbike. For example: If you have a touring Harley, you need to consider a true dual or a 2-1-2 exhaust system.
• Exhaust systems with crossovers have better exhaust equalizing and flow rate enhancing the power output.
• Most dual exhaust systems in touring bikes have catalytic converters placed inside the header pipe. Hence you can use a preferable slip-on muffler to upgrade your exhaust system at a cheap rate yet efficiently.

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FAQs

The following answered questions from the fans, experts, and users of Harley motorcycles could be useful for further queries regarding exhaust systems.

Final Words

Checking out the Harley exhaust fitment chart gives you a heads-up about what you need to be dealing with. 

Since sound notes and performance are equally needed for Harley bikes you need to plan accordingly and make the budget.

We hope this article helps you to get a clear concept of Harley exhaust systems and get the best-suited with the value of money.

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