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I acknowledge that the product(s) being purchased () was/were designed and intended for closed course competition use only. The product(s) is/are neither designed nor intended for use on public roads or land and is against Federal and State regulations to do so. By proceeding with this purchase, I , agree to only use the product(s) for closed course competition.

If an ECU tune was purchased, please send your unmodified and undamaged OEM ECU to TST Industries, located at 623 Pleasant St, Lake Helen, FL 32744.

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FREE SHIPPING OPTION FOR DOMESTIC ORDERS:

U.S. customers are offered a free shipping option for orders with a discounted subtotal greater than $150.00 (before taxes applied). The order's shipment destination must reside within the United States of America. The free shipping options still utilize our standard postage providers and 3rd party shipping companies. Does not apply to large items such as exhausts, stands, and bodywork shipping. All terms and conditions that apply to normal orders will continue to apply to orders with a free shipping option.

NO RESTOCKING FEES:

An item returned within 30 days of purchase, that includes an accurate RMA#, in a perfectly new, unopened condition, and that complies with our other return policies, will not be charged a restocking fee.

MOST QUESTIONS ABOUT THIS PRODUCT CAN BE ANSWERED ON THIS PAGE.

The most common product related questions are answered in the tabs section on this page. Be sure to carefully read through the "Product Details", "In the Box", and "FAQs" tabs. In addition, a lot of our products have comprehensive videos demonstrating installations and product features. You can find those videos in the "Videos" tab.

Note: Some product pages may not have all the tabs mentioned above. Please read through all the available tabs to find the answers to your questions. If you still need assistance, please use the "ASK A QUESTION ABOUT THIS PRODUCT" button below the tabs section.
NO ADDITIONAL COST: You pay at the time of checkout and never have to worry again.
COVERAGE: Our Limited Extended Warranty starts on the date of purchase. It covers all manufacturer defects for our TST Exclusive products. (Products manufactured by us with the exception of our WORX products)
EXPERT HELP: As always our team is here to help. If you’re unsure about this warranty or if your product is eligible, feel free to reach out to us and we can help answer any questions you may have!
PRODUCT ELIGIBILITY: TST will offer our Limited Extended Warranty on all products manufactured by TST Industries.
EASY CLAIMS PROCESS: Simply click the “Contact Us” page and fill out the “Returns Form” to begin the warranty process. Once our team receives your email and initiates the RMA, you can send your product back to us and we will repair/replace the product at no cost as long as a manufacturer defect is found. What qualifies as a manufacturer defect? Check out our Terms and Conditions for some examples!

TST WORX Airbox Cover for Honda Grom 2022+

  • TST WORX Airbox Cover for Honda Grom 2022+
  • Custom designed to improve airflow, performance, and sound on your 2022+ Honda Grom.
  • Developed and rigorously tested by our WORX Race Team Engineers.
  • Replaces the OEM airbox cover for improved airflow.
  • Gain improved performance with the TST WORX Airbox Cover.
  • Upgrade your Honda Grom with the TST WORX Airbox Cover.
  • Improve Grom horsepower with a properly tuned setup and the TST WORX Airbox Cover.
  • Improve Grom torque with a properly tuned setup and the TST WORX Airbox Cover.
  • Increase your Grom's airflow, performance, and sound with the TST WORX Airbox Cover.

TST WORX Airbox Cover for Honda Grom 2022+

TST WORX Airbox Cover for Honda Grom 2022+

Take your 2022+ Honda Grom's performance up a notch with our exclusive direct bolt-on Airbox Cover without losing fairing mounting points or needing an aftermarket filter. Simply remove your stock cover and bolt ours on to experience improved airflow and intake sound.

What's included:
- (1) TST Airbox Cover

Pair the WORX Airbox Cover with the DHM Decha Performance Stealth Intake Tube for even greater engine performance.

Applications:
Honda Grom | 2022, 2023, 2024, 2025


An ECU tune is not required to gain sound improvements but is highly recommended to achieve performance benefits and make the most of your specific engine setup.

This product is part of our Worx Program!

Learn More!
SKU 21HGABC=1
2022 - 2024/GROM/Honda
TST WORX Airbox Cover for Honda Grom 2022+
 
Price: $74.99
Quantity

ATTENTION:

If buying this product as part of the Buy Together bundle below, define these options there.

Buy Together

Make an awesome bundle with your

TST WORX Airbox Cover for Honda Grom 2022+

TST WORX Airbox Cover for Honda Grom 2022+ +
DHM Decha Performance Stealth Intake Tube for Honda Grom 2022+ =
$144.99

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TST WORX Airbox Cover for Honda Grom 2022+
TST WORX Airbox Cover for Honda Grom 2022+
$74.99
Buy Together For Only $144.99

Installation

Product Feature

 

Features

  • Custom design optimizes airflow for improved engine performance
  • "Bolt-on" performance part, meaning no modification to OEM parts required
  • Increased power across the rev range
  • Delivers smooth power delivery and enhanced ridability
  • Enhances intake sound with deep roaring notes
  • No need for an aftermarket filter
  • Retains fairing mounting points
  • Designed, tested, and refined by our WORX program engineers
  • Color and texture matched to the OEM components for a factory performance appearance

Description

When it comes to squeezing more performance out of the Grom's 125cc powerplant, the airbox is an obvious target for improvement, and now with our exclusive Airbox Cover, you can gain noticeable power performance with bolt-on ease. Each airbox cover is manufactured from ABS polymer alloy to be color and texture matched to the OEM cover, providing a stealth and "factory performance part" appearance for your Grom. There's no need for an aftermarket air filter either. We rigorously tested this cover design with a number of different filters, as well as without a filter altogether, and found that the stock filter was perfectly capable of taking advantage of the increased airflow. We even saw a power decrease when running the Grom without an air filter altogether. In ideal conditions, we found that this airbox cover increases not only low end power, but high end power, too. While testing in our WORX dyno facility in Florida, we saw up to 9% gains at certain RPMs. But that's not the only improvement you'll notice. Our Airbox Cover improves the sound of your Grom by enabling more air intake and increasing that intake roar we all know and love. Don't settle for stock, especially when added performance is this easy!

*Dyno graphs demonstrate the achieved power difference between the TST WORX Airbox Cover and the OEM airbox cover. All other parameters remained the same. The 2022 Honda Grom used for testing was outfitted with the Yoshimura RS 9T Full System Exhaust, tuned aRacer RCMini5 ECU, and stock air filter for all tests.

  • (1) TST WORX Airbox Cover
  • 1 Year Warranty (See our warranty policy here)

Reuses OEM hardware for installation

Q: Do I have to modify any part of my Grom?
A: No - When we say that this is a bolt-on part, we mean it! That means if your Grom is in stock form, there's no drilling, cutting, or fabrication required for installation. We even designed this cover to retain the Grom's fairing mounting brackets, which is something that most airbox modifications don't consider.

Q: What air filter is best for this cover?
A: We recommend the stock filter. We even found that performance numbers decreased on our Dyno when comparing no air filter vs. the stock air filter.

Q: Do I need a tune?
A: A tune is not required to experience that deep intake growl, but we always recommend a tune so that you can get the most performance out of your exact setup.

Q: How long will it take for me to receive this once I order it?
A: Our handling time is 1-2 business days, and the shipping time varies based on the shipping method selected. To learn more about shipping times, please see the articles in our Terms & Conditions regarding domestic and international shipping here.

Q: I'm located outside of the United States. Will I have to pay duties on this item?
A: Some countries charge additional fees when a package is imported and delivered to the recipient. We have no way of knowing or estimating what these fees will be. It is the buyer's responsibility to cover these additional costs.

Q: What is your return and warranty policy?
A: Please read over our policies thoroughly on our terms and conditions page BEFORE making your purchase.
TST Industries Terms and Conditions
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Reviews

Customer Reviews:

Average customer rating:
 
(3 reviews)  

3 Most useful customer reviews (see all reviews):
anthony kincer
May 1, 2022
improved bottom end, third gear came to life also. amazon pipe with tst airbox cover and reset ecu.
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James V
May 4, 2022
As soon as I installed it, you can hear the intake growl as you apply throttle. The sound is addicting!

I wonder if TST industries will launch their own performance air filters to pair with the airbox cover for the 2022 Groms. There seems to be no aftermarket replacement performance filters.

Advantages: -Super easy installation and the Youtube video from TST walks you through it. ~19 minutes total time of installation.
-Fitment is spot on and 100% perfect
-Fast shipping

Disadvantages: None
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Dave
Aug 20, 2024
Definitely easy to install once you figure out which fasteners to remove on the 2025 GROM.
TST needs to add an updated video.
Looks great and sounds good.
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