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Attention: You are purchasing closed course competition Product(s)

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!

DHM Decha Performance Stealth Intake Tube for Honda Grom 2022+

DHM Decha Performance Stealth Intake Tube for Honda Grom 2022+

DHM Decha Performance Stealth Intake Tube for Honda Grom 2022+

Improve your 2022+ Honda Grom's engine performance without removing the stock airbox and associated fairing mounts. DHM's Decha Performance Stealth Intake Tube is designed to look like an OEM component while delivering increased airflow for improved engine performance.

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

Applications:

Honda Grom | 2022, 2023, 2024, 2025

SKU 22HGIT=1

2022 - 2024/GROM/Honda

DHM Decha Performance Stealth Intake Tube for Honda Grom 2022+

Price: $70.00

Quantity

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

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DHM Decha Performance Stealth Intake Tube for Honda Grom 2022+

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$144.99

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DHM Decha Performance Stealth Intake Tube for Honda Grom 2022+

DHM Decha Performance Stealth Intake Tube for Honda Grom 2022+

$70.00

TST WORX Airbox Cover for Honda Grom 2022+

TST WORX Airbox Cover for Honda Grom 2022+

$74.99

Uncheck to remove Item

Buy Together For Only $144.99

Product Details
Dyno Charts
In the Box
Recommended Accessories
FAQs

Features and Installation

Features

38mm internal diameter enables increased airflow compared to the stock tube
Manufactured from the same OEM ribbed synthetic material for a stealthy appearance
Intended for the OEM airbox (requires airbox modification for installation)
Includes easy-to-use cutting template to aid in modifying the stock airbox (TST Industries exclusive)
Two notches enable installation on the 2022+ Honda Grom fitment or 2019+ Honda CRF110
Can be paired with the TST WORX Airbox Cover for improved performance
See the proof in the Dyno Charts tab

Description

Get the benefit of increased airflow without having to ditch the OEM stock airbox and accompanying fairing mounts. DHM's Decha Performance Stealth Intake Tube fully replaces the stock tube connecting your airbox to the throttle body. The increased internal diameter enables higher airflow and provides performance gains similar to an aftermarket intake setup. The OEM design of the larger Decha Performance Stealth Intake Tube, combined with its use of the stock airbox and retaining the stock fairing mounts, keeps the noise level down and can still perform well in the rain and off-road, all while looking similar to stock from the outside. When purchased through TST Industries, you'll receive an easy-to-use cutting template built to guide your tool of choice and help you get the perfect cut on the stock airbox during installation, ensuring you spend less time in the garage and more time enjoying the newfound power! If you want to make the most out of the larger intake tube, pair this with the TST WORX Airbox Cover for a stealthy OEM look that provides huge performance gains similar to the top aftermarket full-intake replacement systems.

Required modifications: For proper installation of the DHM Decha Performance Stealth Intake Tube, the stock airbox inlet must be expanded to 42mm and the internal airbox baffles should be removed. When purchasing through TST Industries you'll receive an easy-to-use cutting template that assists you in making the required modification.

Please note this item is not DOT-approved and may not comply with the laws and regulations in your area. See our Terms & Conditions for more information.

ORANGE: DHM Decha Performance Stealth Intake Tube, "Amazon" Exhaust (no-baffle), DHM Tune, OEM airbox with OEM cover.
GREEN: DHM Decha Performance Stealth Intake Tube, "Amazon" Exhaust (no-baffle), DHM Tune, OEM airbox with TST WORX Airbox Cover.

DHM Dyno Chart comparing the stock airbox and stock lid to the stock airbox with TST WORX Airbox Cover

ORANGE: DHM Tune, Low Mount Exhaust, stock airbox with stock tube and stock airbox cover.
BLUE: DHM Tune, Low Mount Exhaust, stock airbox with DHM Decha hose and TST WORX Airbox Cover.
RED: DHM Tune, Low Mount Exhaust, stock airbox with DHM Decha hose and stock airbox cover.

Compare the engine performance of different engine parameters on the 2022 Honda Grom

GREEN: DHM Tune, Low Mount Exhaust, aftermarket metal tube intake with open filter.
DARK BLUE: DHM Tune, Low Mount Exhaust, stock airbox with DHM Decha hose and TST WORX Airbox Cover.
BLUE: DHM Tune, Low Mount Exhaust, stock airbox with DHM Decha hose and stock airbox cover.

Compare the engine performance of different engine parameters on the 2022 Honda Grom

(1) DHM Decha Performance Stealth Intake Tube
(1) TST Exclusive Cutting Template

Q: Does this work with the stock airbox?
A: Yes - this is designed to work with the OEM 2022+ Honda Grom airbox. Some modification is required for proper installation.

Q: Do I need to tune my bike?
A: Anytime that you perform changes to the air/fuel ratio, we highly suggest getting a proper tune to ensure reliable engine performance and to optimize your engine to fully take advantage of the new upgrade.

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

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

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Reviews

Hyperpack Bundle for Yamaha MT-03 2020+

This looks very clean on the bike. I am not a very hands-on person and I could install it very easily. Customer support was great too!

Kendry Grullon

Nov 18, 2024

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