When it comes to OE parts, you never really know what you're going to get. Some just don’t cut it, and the factory post MAF hose is one of those parts that you’d be better off swapping out as soon as you can. That’s where the GrimmSpeed Post MAF Hose Kit steps in. This isn’t just a pretty upgrade; it actually addresses the shortcomings of the stock hose.
So, what makes this hose a must-have? For starters, the construction is a game-changer. The smooth inner surface is designed to eliminate those annoying pockets you find in the OE corrugated folds. Sure, those folds are there for flexibility and to keep the factory rubber intact, but they can really mess with airflow. The GrimmSpeed hose? It’s made from reinforced silicone, which means it’s not just flexible but also sturdy enough to handle the pressure without collapsing under vacuum. You’ll notice the difference in flow almost immediately.
Here’s what you’re getting:
This kit is compatible with a few specific models, so if you’re driving a Subaru WRX (2002-2007), Subaru STi (2004-2007), or Subaru Forester XT (2004-2008), you’re in luck. It’s a perfect fit, and you’ll appreciate the difference it makes in your ride.
In short, if you’re looking to ditch that stock hose for something that actually works and looks good doing it, the GrimmSpeed Post MAF Hose Kit is the way to go.
Other Part Numbers:
GrimmSpeed #GRM125009
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Subaru Forester | 2004-2005, 2008 | XT |

Grimmspeed is an automotive aftermarket company that was founded in 2006 by Justin Grimm. They specialize in creating parts for the exhaust system for various automotive vehicles. Grimm has always had this passion for cars and had always wanted to improve his vehicle’s performance. After numerous trials, he was able to perfect his craft and later on decided to turn it into his career. Today, they have become one of the leading brands when it comes to producing high-performance exhaust systems.
Expanding their Product OfferingThe company initially manufactured parts for Subaru. But as the company expanded, they started offering parts for other brands such as Ford, Mitsubishi, Hyundai, and Mazda. They now offer parts such as intercoolers, intake, exhaust, engine pulleys, gaskets, boost controllers, phenolic spacers and so much more.
Continuous Product DevelopmentGrimmspeed never stops in finding ways to produce innovative products and is always on the push to keep their products up to date. With the rapid change in automotive technology, it is a must that their product is able to adapt to this change for it to satisfy the demand of its users. This is the reason why the company has gained the trust of many tuners all around.
Purchase Grimmspeed Product at Vivid RacingBuilt by an enthusiast for fellow enthusiasts.
If you want a product that is designed to improve the performance of your vehicle, then Grimmspeed is the brand for you. To know more about Grimmspeed, visit Vivid Racing and check out their list of products that would fit your specific needs.