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The quality of FMF’s Factory 4.1 RCT Aluminum Silencer with Stainless Steel End Cap is apparent right from the get go. The aerospace-grade aluminum body has been bumped up in volume to fit more packing material for longer-lasting, low-decibel sound output. FMF also uses unique Resonance Chamber Technology™ (RCT) at the front of the slip-on to ensure compliance with the FIM 2M max sound test and meet stringent AMA sound requirements.
The RCT design not only maintains your bike’s maximum output, but the patented chamber design refines and enhances your exhaust pressure, giving you tunable gains throughout your rpm range. And you can put these gains right where you want them since to the stainless end cap—just like the Carbon 4.1 RCT end cap—allows you to swap out tuning inserts to suit your preference. Swapping between tips or servicing your exhaust also won’t be a hassle since access is made easy with four screws on the end cap. FMF walks the walk and talks the talk. Quality components and extensive knowledge combine in the FMF Factory 4.1 RCT Silencer to create a slip-on you’ll love.
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