Hallman Manual Boost Controller: Pro RX Kit (Purple). FREE SHIPPING!!!!
The Hallman Pro RX kit uses the same valve as the Pro kit, but replaces the stainless steel ball of the valve with a Ceramic ball that is a fraction of the weight of the stainless ball allowing the ball to react quickly and controll boost in fine 1/2lb increments. This valve allows adjustments up to 4 to 5psi over stock levels.The Stiffer spring that is included with the kit allows for adjustments beyond 5psi over stock.
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