Nitrous Express Direct Port Water Injection 8 Cyl Stage 1 w/Hardlines Differential Mounts Perrin 08-11 Subaru STi /

Perrin 08-11 Subaru STi / WRX Black Radiator Shroud

Includes a push-in radiator probe

667in Bore 10:1 CR Platinum Extreme Duty Piston Set

the radiator cap is an essential part of the system

NRG Universal Shift Knob 42mm Multi-Color/Neochrome (5 Speed)

Nitrous Express Direct Port Water Injection 8 Cyl Stage 1 w/Hardlines Differential Mounts Perrin 08-11 Subaru STi /NX direct port water methanol systems inject the water methanol mixture directly into each intake runner providing excellent distribution to each cylinder. These systems include a high pressure electric pump, stainless steel hard lines, filtered nozzles, nickel plated fittings and a composite reservoir. Stage one systems include a wide open throttle activation switch while stage 2 and stage 3 systems include digital progressive controllers that