Product Details

Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake system for the 2015+ WRX. Of course performance is the highest priority, but at GrimmSpeed so much more than that goes into a product. We wanted an intake that purred quietly under normal driving circumstances, but would roar at wide open throttle. We wanted an intake that looked at home in the well-sported 2015+ WRX engine bay instead of a shoebox stuffed into the fender area. From here, the SteathBox was born. We took the concept one step further and referenced the F-117 Nighthawk as inspiration for the stealthy look of the GrimmSpeed heat shield. It should come as no surprise that the performance it packs is equally unique.

• +32wtq (14.3%) and +21whp (9.6%)
• Designed in CAD - Perfect mating with the factory turbo and ram-air scoop 
• Low bend angle aluminum tube - Minimize restriction and maximize performance 
• Shielded MAF sensor placement - Protects MAF from heat, which increases accuracy of readings 
• Made in the USA - Manufactured right here in Minnesota

  GrimmSpeed Stealthbox Intake Kit Includes

• 1x CNC bent intake tube w/ MAF flange 
• 1x GrimmSpeed high-flow air filter 
• 1x Aluminum heat shield 
• 1x 12" MAF harness extension 
• 1x Silicon hump coupler 
• 3x Stainless steel worm gear clamp 
• 3x Rubber gasket material cut-to-length 
• 2x MAF sensor machine screws