Change power characteristics to match rider preference and track conditions using interchangeable velocity stacks
Depending on the selected velocity stack the rider will experience increased bottom and mid-range power (longer stack) or mid- to top-range power (shorter stack)
Improved throttle response with either stack installed
Velocity stacks function as resonating pipes; the length of the pipe alters the dynamic tuning range by adjusting the frequency of pressure pulses within the tract
System includes AIR4ORCE tunable intake system, two velocity stacks, detailed instructions and hose clamps and gaskets (for models that require them)
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