The outer chamber in the Powerbomb allows the air to expand, cool and ramp back up at a higher velocity. Additionally, the PowerBomb is a "pre-muffler" of sorts which helps to lower the bikes sound output by providing more sound absorbing surface area for the sound medium (exhaust gases). On some models, you can choose between a moto or supercross version.
The supercross version is designed for more low to mid-range power where the moto version is focused in the mid to upper RPM range. Muffler: FMF PowerCore 4 Muffler 044016. We developed the PowerCore4 to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is useable and compatible with every style of riding. Aluminum construction and stainless steel Hi-Flo endcaps make for the perfect balance of performance and strength. Aluminum performance muffler with durable stainless steel components.Completely redesigned for all late model applications. Some items may have a slightly different appearance than what is shown in the picture. Please review the entire description to verify proper fitment. The item "FMF Powerbomb Powercore 4 Yamaha Raptor 660 Exhaust System Head Pipe Muffler" is in sale since Friday, April 19, 2019.
This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Exhaust". The seller is "apex*racing" and is located in Troy, Ohio.
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