Skip to content
❄️⛄ Be Your Own Santa Sale - Shop Deals Now ❄️⛄
❄️⛄ Be Your Own Santa Sale - Click Here ❄️⛄
Rewards Program My Wishlist Customer Support Military Discounts The Subimods Blog The Motul Market Bread Pay® Financing Diamond Club Membership
Grimmspeed StealthBox Cold Air Intake Red 2015-2021 WRX - 060067 - Subimods.com

Grimmspeed StealthBox Cold Air Intake Red 2015-2021 WRX

$399.00
$399.00 - $399.00
$399.00 - $399.00
$399.00
SKU 060067
by Grimmspeed

DETAILS

Inspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake system for the 2015-21 Subaru WRX. Of course performance is the highest priority, but at GrimmSpeed so much more than that goes into a product. We wanted an intake that purred quietly under normal driving circumstances, but would roar at wide open throttle. We wanted an intake that looked at home in the well-sported 2015-21 WRX engine bay instead of a shoebox stuffed into the fender area. From here, the SteathBox was born. We took the concept one step further and referenced the F-117 Nighthawk as inspiration for the stealthy look of the GrimmSpeed heat shield. It should come as no surprise that the performance it packs is equally unique.

QUICK SPECS:

  • +32wtq (14.3%) and +21whp (9.6%)
  • Designed in CAD - Perfect mating with the factory turbo and ram-air scoop
  • Low bend angle aluminum tube - Minimize restriction and maximize performance
  • Shielded MAF sensor placement - Protects MAF from heat, which increases accuracy of readings
  • Made in the USA - Manufactured right here in Minnesota

MAF diameter and placement, total bend angle, filter location, and heat shield design were the primary variables during the design phase. To ensure accurate readings, unaffected by the intense heat of the engine bay, MAF sensor placement absolutely must be within the heat shield. To minimize restriction, it was important to keep the total bend angle in the intake tube as low as possible, but still raise the filter location away from the ground to protect it from the elements. Lastly, testing showed the importance of utilizing the factory ram air scoop to feed the otherwise stagnant air in front of the fender.

Customer Reviews

Based on 10 reviews
100%
(10)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
90.0
100.0
M
Myron Dixon
The Turbo Whistles - Whoosh!

I was genuinely surprised when I heard the sound, as I was expecting it to be a mild change. However, my expectations were far exceeded when I actually heard it. This intake is truly remarkable. I am thoroughly impressed with the quality of GrimmSpeed’s products.

Myron,

Thank you for your 5 Star Review and video! We are thrilled to hear that you are enjoying the Turbo Whistles of our StealthBox Cold Air Intake. We take pride in providing high-quality products and we are glad to know that we exceeded your expectations. Happy driving!

Regards,

N
Nathaniel Baldwin
Legit

This thing performs amazing super easy to install and sounds phenomenal dude 10-10 reccomend with tune and additional parts bro this thing is sick!!!!!!!!!!!!

User picture

Nathaniel,

Thank you for your 5 Star Review of the Grimmspeed StealthBox Cold Air Intake! We are thrilled to hear that you found it easy to install and that it improved the performance of your WRX. It's great that you also found it to sound phenomenal. We hope you continue to enjoy your new intake!

Regards,

C
Christofer Nieves
The best

Very fast shipping and excellent product really recommend.

Christofer,

Thank you for taking the time to leave a 5-Star Review of the Grimmspeed StealthBox Cold Air Intake! I am happy to hear you are pleased with how quickly your item arrived! This intake is a great way to add HP and Torque while giving your intake the coolest air possible! Enjoy!

Regards,

J
John Thai
Fast shipping and excellent item

I’ve always liked how grimmspeed make their car parts and this did not disappoint. You can definitely hear the intake sucking up air and if you have a bov or pbv you’ll definitely hear that also great product.

John,

We appreciate your 5-Star Review of the Grimmspeed Stealth Box Cold Air Intake! We are thrilled to hear that you had a great experience with both the shipping and the product itself. The increased sound and performance really add to your driving experience, and it's great to know that you're enjoying it. Thank you for choosing Subimods for your Subaru parts needs!

Regards,

D
Denson
Amazing product and fast shipping !!!

Changes the sound completely. I wasn’t expecting that much of a difference but it sounds amazing.

Denson,

The Grimmspeed StealthBox Cold Air Intake is called the StealthBox for a reason! The look and fit is extremely stealth like incorporating the use of the factory ram air scoop which provides cold air directly into the box and to the filter! The low bend angle allows for a straighter, undisturbed airflow to your turbo providing better all around performance and an amazing sound! This intake is a spot on improvement! Thank you for your 5 Star Review!

Regards,

12

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare