Power Packages
Stage 3 Power Package - 15-21 Subaru STI
Everything you need in one package! The beauty of the GrimmSpeed Stage Power Packages is that all...
Everything you need in one package! The beauty of the GrimmSpeed Stage Power Packages is that all of the included components were designed and tested to work well together as a complete system. Instead of piecing together parts from many different manufacturers and hoping that their design theories are compatible, consider starting with one of our excellent power packages designed to work as one unit. The GrimmSpeed Stage 3 Power Package has everything you need to capture the power you are lo...
Stage 2 Power Package - 15-21 Subaru STI
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were de...
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were designed and tested to work well together as a complete system. Instead of piecing together parts from many different manufacturers and hoping that they're design theories are compatible, consider starting with one of our excellent Staged Power Packages based on your goals! The GrimmSpeed Stage 2 Power Package is an excellent place to start when modifying your 2015-21 Subaru STI. The upgraded GrimmS...
Stage 1 Power Package - 15-21 Subaru STI
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were de...
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were designed and tested to work well together as a complete system. Instead of piecing together parts from many different manufacturers and hoping that they're design theories are compatible, consider starting with one of our excellent Staged Power Packages based on your goals! The GrimmSpeed Stage 1 Power Package is an excellent place to start when modifying your 2015-21 Subaru STI. The upgraded GrimmS...
Stage 3 Power Package - 15-21 Subaru WRX
Stage 3 Package Components GrimmSpeed 3-Port Electronic Boost Control Solenoid GrimmSpeed Stealt...
Stage 3 Package Components GrimmSpeed 3-Port Electronic Boost Control Solenoid GrimmSpeed StealthBox Cold Air Intake System GrimmSpeed Catted J-Pipe GrimmSpeed Top Mount Intercooler GrimmSpeed Intercooler Charge Pipe GrimmSpeed License Plate Frames The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were designed and tested to work well together, as a complete system. Instead of piecing together parts from many different manufacturers and hoping that th...
Stage 2 Power Package - 15-21 Subaru WRX
Stage 2 Package Components GrimmSpeed 3-Port Electronic Boost Control Solenoid GrimmSpeed Stealt...
Stage 2 Package Components GrimmSpeed 3-Port Electronic Boost Control Solenoid GrimmSpeed StealthBox Cold Air Intake System GrimmSpeed Catted J-Pipe GrimmSpeed License Plate Frames The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were designed and tested to work well together as a complete system. Instead of piecing together parts from many different manufacturers and hoping that they're design theories are compatible, consider starting with one o...
Stage 1 Power Package - 15-21 Subaru WRX
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were de...
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were designed and tested to work well together as a complete system. Instead of piecing together parts from many different manufacturers and hoping that they're design theories are compatible, consider starting with one of our excellent Staged Power Packages based on your goals! The GrimmSpeed Stage 1 Power Package is an excellent place to start when modifying your 2015-21 Subaru WRX. The upgraded GrimmS...
Stage 3 Power Package - 05-09 Subaru Legacy GT
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were de...
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were designed and tested to work well together as a complete system. Instead of piecing together parts from many different manufacturers and hoping that they're design theories are compatible, consider starting with one of our excellent Staged Power Packages based on your goals! The GrimmSpeed Stage 3 Power Package represents the pinnacle of bolt-on performance for your 2005-2009 Subaru Legacy GT. This p...
Stage 2 Power Package - 05-09 Subaru Legacy GT
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were de...
The beauty of the GrimmSpeed Staged Power Packages is that all of the included components were designed and tested to work well together as a complete system. Instead of piecing together parts from many different manufacturers and hoping that they're design theories are compatible, consider starting with one of our excellent Staged Power Packages based on your goals! The GrimmSpeed Stage 2 Power Package is a well-rounded kit, offering increased power and torque output thanks to reduced restri...