Two Brothers Racing Muffler Options

“What’s the difference?” Is the most frequently asked question about the many muffler options Two Brothers offers with their exhaust systems.

The difference is purely cosmetic. All of their muffler options, Standard, Black Series, Silver Series and the S1R have that one of a kind Two Brothers sound and the same level of performance.

Below are pictures of the different muffler options. We will also go into an explanation of end cap variations and muffler positioning.

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Here are the Aluminum, Carbon Fiber and Titanium mufflers (a.k.a. Standard Series). These mufflers have Gold trim at each end and a bright Two Brothers logo:
Here are the “Black Series” Aluminum, Carbon Fiber and Titanium mufflers. These mufflers are totally Blacked out at each end with anodized Black trim and a Black/Gray Two Brothers logo:
Here are the “Silver Series” Aluminum and Carbon Fiber mufflers (Titanium is not offered in the Silver Series). These mufflers Have Silver trim at each end and a Black/Gray Two Brothers logo with Red accents:
The Silver Series Carbon Fiber muffler features an all new pattern that’s different than the pattern on the Carbon Fiber (Standard Series) and Black Series Carbon Fiber, check it out:
The mufflers shown above are the most common. Side mount with the muffler attaching to the passenger foot peg bracket, as shown here on the Honda CBR500R or the Suzuki GSXR600/750.

Two Brothers mufflers also come with different end cap variations and muffler positioning which is determined by the motorcycle make/model the exhaust is built for, here are some examples.

This is a Silver Series Aluminum muffler which looks different from the mufflers above because of the end cap and the muffler positioning.

This muffler is found on motorcycles like the Honda CBR1000RR and the Kawasaki ZX6R as shown below. (The end cap and muffler are positioned the way they are because of the low, side mount GP style mounting location)

Depending on the motorcycle make/model this muffler is available in several styles. For example, the CBR1000RR shown above is the 2012 model and Two Brothers offers muffler options in Black Series Aluminum, Carbon Fiber, Titanium and Silver Series Aluminum and Carbon Fiber. The Kawasaki shown is the ZX6R 2012 and Two Brothers offers muffler options in Aluminum, Carbon Fiber, Titanium (a.k.a. Standard Series), Black Series Aluminum, Carbon Fiber, Titanium and Silver Series Aluminum and Carbon Fiber.

This is a Black Series Carbon Fiber muffler which looks different from the mufflers above because of the end cap and the muffler positioning.

This muffler is found on motorcycles like the Honda CBR600RR and the Yamaha R1 as shown below. (The end cap and muffler are positioned the way they are because of the undertail mounting location)

Depending on the motorcycle make/model this muffler is available in several styles. For example, the CBR600RR shown above is the 2013 model and Two Brothers offers muffler options in Black Series Aluminum, Carbon Fiber, Titanium and Silver Series Aluminum and Carbon Fiber. The R1 shown is the 2013 model and Two Brothers offers muffler options in Aluminum, Carbon Fiber, Titanium (a.k.a. Standard Series), Black Series Aluminum, Carbon Fiber, Titanium and Silver Series Aluminum and Carbon Fiber.

Almost every Two Brothers exhaust for the street is an “M2” canister. M2 refers to the size of the canister portion of the muffler. It is much more rare these days than it used to be but there are some motorcycles that Two Brothers manufactures in M2 and M5 canisters. The difference here is only in size, sound and performance remain the same. Here is a line art drawing showing the size difference between M2 and M5.

Some motorcycles are only available in an M5 canister like the BMW K1300S and the Kawasaki Concours 14 as shown below.

The bottom line is that every Two Brothers exhaust is designed to replace the motorcycle’s OEM/stock exhaust. Installation is simple, all the necessary installation hardware is included along with detailed installation instructions.

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