Hallman Pro RX Manual Boost Controllers Variations:Hallman PRO RX Manual Boost Controller Red SPEC's Stage 5 features a

SPEC's Stage 5 features a full-metallic disc with the highest possible friction coefficient

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- Adjustable Rebound with fixed compression settings - optimal ride comfort then dial in more grip and a better balance with less bodyroll than the standard suspension

Injen SP Series Air Intake for VW Jetta GLI MK6 Features:

Hallman Pro RX Manual Boost Controllers Variations:Hallman PRO RX Manual Boost Controller Red SPEC's Stage 5 features aHallman's Pro RX kit is essentially the Pro kit with a ceramic ball instead of a steel ball. This allows for very specific boost control, and very fine adjustment for those only raising their boost a few pounds above stock. Boost can be adjusted consistently in 1 2lb increments with the Pro Rx. For those looking to add more than 5psi, the Pro RX also includes a stiffer spring. This kit has a ceramic ball instead of the 316 stainless ball that comes in