GrimmSpeed Post MAF Hose Kit Black – 2002-2007 Subaru WRX / STI

GrimmSpeed Post MAF Hose Kit (Black), 2002-2007 Subaru WRX / STI

The GrimmSpeed Post MAF Hose Kit in black for the 2002-2007 Subaru WRX / STI replaces the factory post-MAF hose sections with color-matched silicone alternatives. Higher-grade silicone construction than OEM rubber, resists heat degradation and maintains boost sealing better.

DETAILS

• Color: Black silicone
• Replaces factory post-MAF hoses
• Higher-grade than OEM rubber
• Fitment: 2002-2007 Subaru WRX / STI

The post-MAF hoses on the STI are under boost pressure and see elevated temperatures. OEM rubber hardens and develops micro-cracks over time, causing small boost leaks that are difficult to locate.

The GrimmSpeed black silicone hoses maintain their compliance and sealing characteristics significantly longer than OEM rubber. The black color provides a visual upgrade alongside the functional improvement.

What’s in the Box

• GrimmSpeed post-MAF hose kit
• Clamps

Why Choose GrimmSpeed

GrimmSpeed has been engineering performance parts for Subaru platforms from their Portland, Oregon facility since 2003. Everything they make is designed around real-world use, their engineers drive the same cars their customers drive, which means product decisions are made with genuine platform knowledge behind them. GrimmSpeed designs parts in-house, sources quality materials, and validates fitment on the actual application before release. The result is parts that install correctly the first time, perform as advertised, and hold up under the conditions Subaru owners actually subject their cars to. Whether it is a critical engine component or a cosmetic upgrade, the same attention to detail and fit quality applies across the catalog.

The RallySport Take

Correct replacement for OEM post-MAF hoses on 2002-2007 Subaru WRX / STI applications. Better material, better sealing, better appearance. Fits the 2002-2007 Subaru WRX / STI.

Fitment