GrimmSpeed STEALTHBOX INTAKE (2015+ WRX)

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  • Regular price $399.00
Shipping calculated at checkout.


  • Black or Red finish options
  • CNC mandrel-bend and CNC cut 6061 aluminum intake tube
  • 1/8" thickness intake tube for better thermal control
  • 6061 alloy MAF flange
  • Laser-cut 3/16" thick aluminum mounting brackets
  • Gains of +32 WTQ (14.3%) and +21 WHP (9.6%)
  • Designed in CAD that mates perfectly with the factory turbo and ram-air scoop
  • Low bend angle aluminum tube minimizes restriction while maximizing performance
  • Shielded MAF sensor placement protects the MAF from heat and increases the accuracy of the readings
  • Optimal MAF placement in the design and bend angle of the intake pipe
  • Designed with a heat shield to provide as close as possible ambient temperatures to the filter 

  • INCLUDES:

  • (1) CNC-bent intake tube with MAF flange
  • (1) GrimmSpeed High-Flow Dry air filter
  • (1) Aluminum heat shield
  • (1) 12" MAF harness extension
  • (1) Silicone hump coupler
  • (3) Stainless steel worm gear clamps
  • (3) Rubber gasket material cut to length 
  • (2) MAF sensor machine


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