See more parts for Subaru Forester
Select the year of your Subaru Forester:
Product thumb
GrimmSpeed Red Post MAF Hose Kit Subaru STI | WRX | Legacy GT | Outback XT | Forester XT 2005-2021
$84.00

Upgrade Your Subaru with the GrimmSpeed Post MAF Hose Kit

If you're a proud owner of a Subaru STI (2008-2021), WRX (2008-2014), Legacy GT (2005-2009), Outback XT (2005-2009), or Forester XT (2009-2013), it's time to ditch that lackluster factory post MAF hose. The GrimmSpeed Post MAF Hose Kit not only enhances the aesthetics of your engine bay but also addresses the shortcomings of the OEM part.

Why Choose the GrimmSpeed Post MAF Hose?

Our Post MAF Hose is engineered to optimize airflow and performance with two key features:

  1. Smooth Inner Surface: Unlike the factory's corrugated design, which can create airflow pockets, our hose features a smooth inner surface that promotes uninterrupted airflow. Made from 4-ply reinforced silicone, it provides both flexibility for easy installation and robust structural integrity to prevent collapse under vacuum.
  2. Tapered Center Portion: The tapered design ensures that the inner diameter aligns perfectly with your OEM air box and turbo inlet. This prevents airflow disruptions caused by mismatched diameters, which can lead to unwanted vortexes and turbulence.

For the ultimate performance boost, pair this hose with the GrimmSpeed DRY-CON Panel Air Filter to maximize your factory intake system until you're ready to upgrade to a full GrimmSpeed Intake.

Features

  • 4-Ply Reinforced Silicone - Available in red or black for a custom look
  • OEM Fitment - Easy installation with no modifications or tuning required
  • Seamless Flow - CAD optimized design for optimal airflow
  • High-Quality Breeze Hose Clamps Included
  • GrimmSpeed Logo - Show off your favorite brand!

Fitment

  • Subaru STI (2008-2021)
  • Subaru WRX (2008-2014)
  • Subaru Legacy GT (2005-2009)
  • Subaru Outback XT (2005-2009)
  • Subaru Forester XT (2009-2013)

Customer Feedback

Subaru WRX owner says: "Swapped out my factory hose for the GrimmSpeed Post MAF Hose and noticed an immediate difference in throttle response. Installation was a breeze, and it looks fantastic in my engine bay!"

Another Subaru STI enthusiast shared: "The tapered design fits perfectly with my stock air box, and I love the quality of the silicone. Definitely a worthwhile upgrade!"

Don't settle for mediocre performance. Upgrade to the GrimmSpeed Post MAF Hose Kit and experience the difference in your Subaru's performance and aesthetics!



Other Part Numbers:
GrimmSpeed #GRM125014

Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle Make/Model
Subaru Forester 2009, 2014 XT
Subaru Legacy 2005-2008 GT
Subaru Outback 2005-2008 XT
Subaru WRX 2012-2014 STI
Subaru WRX 2012-2014 Base
Subaru WRX 2013-2014 Limited
Subaru WRX 2014 SE
Subaru WRX STI 2013-2021 Base
Subaru WRX STI 2013-2014, 2017-2021 Sport-tech
Subaru WRX STI 2014 Tsurugi Edition
Subaru WRX STI 2015 Launch Edition
Subaru WRX STI 2015-2021 Limited
Subaru WRX STI 2016 Series.HyperBlue
Subaru WRX STI 2017-2021 Sport
Subaru WRX STI 2018 Type RA
Subaru WRX STI 2018-2021 STI
Subaru WRX STI 2019 S209
Subaru WRX STI 2020 Kanrai Edition

GrimmSpeed Banner

Who is Grimmspeed?

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 Offering

The 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 Development

Grimmspeed 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 Racing

Built 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.






 




What is the GrimmSpeed Limited Lifetime Warranty Policy?GrimmSpeed-branded products are warrantied to the original owner against manufacturing defects in materials and workmanship for the lifetime of the product.

If a GrimmSpeed-branded product covered by this warranty fails due to a manufacturing defect we will repair the product, without charge, or replace it, at our discretion. Only original, unaltered and unmodified materials and workmanship are covered by this policy and you must provide proof of original purchase to be fully covered. This warranty does not cover damage caused by accidents, improper care/installation, negligence, reasonable/normal wear and tear, or the natural breakdown of colors, coatings and materials over extended time and usage. GrimmSpeed cannot be held liable for any damage to your vehicle and/or its components caused by failures associated with the previous statement. Damage not covered under warranty may be considered for repair for a reasonable rate or a reduced price for a replacement piece (a fee will be charged for return shipping).This warranty is available in the United States and Canada.

This warranty does not cover products sold by GrimmSpeed that are not GrimmSpeed-branded products.

This warranty gives you specific legal rights; you may have other rights, which vary from state to state.

The GrimmSpeed website sells GrimmSpeed-branded discontinued, special make-up, and slightly blemished products at significant discounts as 'factory seconds' products. This warranty does not necessarily cover any products purchased as 'factory seconds'. The GrimmSpeed Warranty Department may repair 'factory seconds' products for a reasonable charge and a fee will be charged for return shipping.

Is normal wear and tear covered?

The GrimmSpeed Limited Lifetime Warranty covers manufacturing defects in materials and workmanship, but it does not cover normal wear and tear over extended time and usage. Wear and tear is damage that naturally and inevitably occurs as a result of normal use. Regardless of how carefully you use, or how well you care for your GrimmSpeed product, like all performance parts it will eventually begin to show age and wear. Common examples of wear and tear that would not be covered under the limited lifetime warranty include denting, abrasions or scratches, color changing from heat in exhaust components and so on, less common examples include flex-section wear and fatigue cracks over an extended period of time.

How do I send my product in for warranty?

The first step is to contact [email protected] and let them know of your issues/concerns. From there, a customer service representative will personally work with you to determine the best path forward. For the quickest service, please include your contact information and photos of the failed product along with a copy of your receipt/invoice in your initial email.

Upon request from your customer service representative, your product must be returned directly to The GrimmSpeed Warranty Department at 650 Taft St NE, Suite 300, Minneapolis, MN, 55413. All shipping to Warranty must be pre-paid and insured. GrimmSpeed cannot be liable for lost in-bound packages.

Check out these other great products