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  1. Engine/EFI/Drivetrain
    Just curious if anyone here is running any of the new HMF exhausts. I'm considering the Ballance QRS(quiet race series). From what I understand they are tune-able with 3 interchangeable cores. They do look good. I'm running a FMF Q4 on my bike, but I don't see many FMF's on ATV.
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