Hallman Manual Boost Controller, Pro Kit (Red). FREE SHIPPING!!!!!!!
We have designed the Pro valve to not require the use of a lock nut or any type of allen wrench to be able to adjust your boost. Simply turn the knob and it stays. Another great feature is the adjustment knob cannot come out, get lost, or come out of the valve. This means no chance of overboosting due to the knob comming out of the valve.
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