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  3. GRIMMSPEED GRM125012

GRIMMSPEED GRM125012 Post Maf Silicone Air Intake Hose Kit

fits model: Wrx, Sti. year: 2018–2021.

Grm125012 Grimmspeed Post Maf Silicone Air Intake Hose Kit For 08-14 Wrx 18-21 Sti Red

( Brand: Grimmspeed ), ( Manufacturer Part Number: GRM125012 ), ( Type: Post Maf Hose Kit ), ( Manufacturer Warranty: 1 Year ), ( Color: Red ), ( Country Of Origin: United States ), ( Performance Part: Yes ), ( California Prop 65 Warning: Cancer, Birth Defects, And Reproductive Harm )

Review GRIMMSPEED Post Maf Silicone Air Intake Hose Kit For 08-14 Red fits WRX STI 2018–2021

Introducing the Grimmspeed GRM125012 Post MAF Silicone Air Intake Hose Kit, meticulously engineered to enhance the performance of your 2008-2014 Subaru WRX and 2018-2021 Subaru STI. This high-performance upgrade is designed to replace the factory rubber hoses with premium silicone components, offering several benefits for your Subaru.

The Grimmspeed kit includes all the necessary hoses to upgrade the intake system, featuring a unique post-MAF (Mass Air Flow) design. This post-MAF configuration allows the air filter to be located further away from the engine, reducing the intake air temperature and increasing the airflow. The result is improved engine performance, throttle response, and overall driving experience.

The hoses in this kit are crafted from top-quality silicone material, which offers numerous advantages over the factory rubber hoses. Silicone is known for its superior flexibility, durability, and resistance to heat, making it an ideal choice for high-performance applications. With the Grimmspeed hoses, you can expect a more efficient airflow, increased power, and a more responsive engine.

Another significant advantage of the Grimmspeed GRM125012 kit is the elimination of the factory resonator. By removing the resonator, the intake system allows for a more direct and unfiltered airflow into the engine. This results in a more aggressive engine note, adding a thrilling audio experience to your driving experience.

The Grimmspeed hoses are meticulously designed to ensure a perfect fit and easy installation. Each hose comes with a clamp and a high-quality T-bolt, making the installation process straightforward and hassle-free. Additionally, the hoses are equipped with a reinforced inner layer, ensuring a secure connection to the engine components and maintaining a leak-free intake system.

Upgrading your intake system with the Grimmspeed GRM125012 Post MAF Silicone Air Intake Hose Kit is an excellent investment for Subaru enthusiasts seeking improved performance and a more engaging driving experience. By replacing the factory rubber hoses with premium silicone components, you can enjoy enhanced throttle response, increased power, and a more aggressive engine note all while improving the overall durability and longevity of your Subaru's intake system.

Grimmspeed GRM125012 Silicone Air Intake Hose Kit for 08-14 WRX and 18-21 STI: A Comprehensive Analysis

Introduction:

The Grimmspeed GRM125012 Silicone Air Intake Hose Kit is a popular aftermarket upgrade for Subaru WRX and STI models from 2008 to 2014 and 2018 to 2021. This kit replaces the stock rubber air intake hoses with high-performance silicone hoses. In this analysis, we'll discuss the key features, benefits, and potential drawbacks of this product.

Key Features:

1. High-quality silicone material: The Grimmspeed hoses are made from high-quality, heat-resistant silicone, ensuring durability and longevity.

2. Improved flow: Silicone hoses have a larger diameter than stock rubber hoses, allowing for improved airflow to the engine.

3. Enhanced aesthetics: The sleek, black silicone hoses provide a more visually appealing look under the hood.

Benefits:

1. Increased power: The improved airflow from the Grimmspeed hoses allows for a slight increase in power, particularly noticeable in the mid-range.

2. Durability: Silicone hoses are more resilient than rubber hoses, reducing the likelihood of leaks and failure.

3. Temperature resistance: Silicone hoses can better withstand extreme temperatures, ensuring consistent air intake performance.

Drawbacks:

1. Cost: The Grimmspeed silicone air intake hose kit is more expensive than the stock rubber hoses.

2. Installation: Installing the Grimmspeed hoses may require some mechanical expertise and additional tools.

3. Potential vibration: Some users have reported experiencing increased engine vibration after installing the Grimmspeed hoses, although this is not a common complaint.

Conclusion:

The Grimmspeed GRM125012 Silicone Air Intake Hose Kit offers several benefits for Subaru WRX and STI owners, including improved power, durability, and temperature resistance. However, the cost and potential installation challenges may deter some buyers. Ultimately, the decision to purchase this kit depends on individual preferences, budget, and technical abilities. If you're looking for a high-performance, long-lasting air intake solution, the Grimmspeed hoses are an excellent choice. However, if you're on a tight budget or not comfortable with installation, the stock rubber hoses may be a more suitable option.

Recommendation:

If you're an enthusiast looking to enhance the performance and durability of your Subaru WRX or STI, the Grimmspeed GRM125012 Silicone Air Intake Hose Kit is a worthwhile investment. Ensure you have the necessary tools and expertise for installation, or consider hiring a professional to ensure a proper fit and function. If you're on a budget or not interested in the performance benefits, the stock rubber hoses will suffice for your vehicle's needs.

Details:

No Tuning required - Even when coupled with GrimmSpeed DRY-CON Panel Air Filter for maximum performance. The GrimmSpeed Hose design supports a minimal curve transition and is perfectly smooth inside, resulting in more consistent airflow to the turbo. The first step in improving on an existing part is to find its shortcomings. The tapered portion is also an important design choice for contributing to even flow through the hose.

The second feature are tapered end portions, making sure the inner diameter matches OEM air box and turbo inlet. Untitled Document. This makes our hoses sufficiently flexible and also allows them to retain strong structural properties for a design that maximizes flow, is very easy install won't collapse under vacuum. 4-Ply Stainless Steel-Reinforced Silicone - Extremely durable, yet flexible; available in red or black.

A MI's-matched diameter creates steps, which will interrupt the air flow trajectories and create small vortexes in post MAF hoses. High Quality Breeze Hose Clamps - Included in every kit. Seamless Flow - CAD optimized design. The OEM rubber hoses require sharper angels and corrugated structural folds as part of their design.

GrimmSpeed Post-MAF Hose Kit: Features: Our post MAF hose construction improves on OE with 2 main features: First is the smooth inner surface, removing pockets from structural corrugated folds. OEM Fitment - Easy install, no modification required. Our variants are designed specifically to prevent these issues. The GrimmSpeed Post MAF Hoses are comprised of 4-ply silicone and unlike our competitors offerings, reinforced with an internal stainless steel wire running the length each piece.

This contributes to uneven airflow through the hose with high and low pressure spots.

part #: grm125012 price

  • $89.00

specifications turbiparts:

  • for models: Wrx, Sti
  • for years: 2018-2021
  • brand: Grimmspeed
  • mpn: Grm125012
  • type: Post Maf Hose Kit
  • manufacturer warranty: 1 Year
  • color: Red
  • country of origin: United States
  • performance part: Yes
  • california prop 65 warning: Cancer, Birth Defects, And Reproductive Harm

shipping turbiparts:

  • transit: 3-7 Days
  • cost: $10.81
  • class: Standard, Expedited
  • carrier: USPS, FedEx
  • type: Calculated
  • service: USPS Ground Advantage, USPS Priority Mail, FedEx Ground / FedEx Home Delivery

seller turbiparts:

  • city: Los Angeles, California
  • rating: 99.7%
  • # reviews: 41954

offer turbiparts:

  • started: March 4, 2026
  • sold: 0
  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home

payments turbiparts:

  • other
  • wallet: Paypal
  • credit card: Mastercard

general turbiparts:

  • condition: New
  • Air Fuel Delivery > Turbos, Superchargers Intercoolers > Turbos Parts

returns turbiparts:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days
for models: wrx, sti, for years: 2018-2021, type: post maf hose kit, manufacturer warranty: 1 year, country of origin: united states, performance part: yes, california prop 65 warning: cancer, birth defects, and reproductive harm,
category: auto parts > air fuel delivery > turbos, superchargers intercoolers > turbos parts, color: red, sku: 12839814005495762,

Grimmspeed GRM125012 Is Similar To:

turbiparts logo
2 offers $89.00–$89.00 USD
  • Offer #1: $89.00 price + $12.15 shipping estimate = $101.15* total. The OEM rubber hoses require sharper angels and corrugated structural folds as part of their design. First is the smooth inner surface, removing the pockets from the OE structural corrugated folds.+$12.15 shipping
  • Offer #2: $89.00 price + $17.49 shipping estimate = $106.49* total. These folds are necessary for the factory rubber Design for flexibility during Installation and structural integrity. Part Number 125012.+$17.49 shipping

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