• May include: Close-up of black metal M2.5 screws for TRX4m. The screws are on a white surface with a gray and white grid pattern. The text "Factory" is visible in the background.
  • May include: A set of black and silver metal hardware for a remote control car. The hardware includes three black hex shafts, two silver hex shafts, and four silver hex nuts.
  • May include: Close-up of four black tires with silver rims and five black metal parts. The tires are on a white surface with a grid pattern and the word "Factor" printed in gray.
  • May include: Close-up of a black tire with a silver rim and a black axle. The tire has a knobby tread pattern.
  • May include: A close-up of a red and black model car chassis with black tires. The chassis is made of metal and has a suspension system. The car is being assembled on a white surface.
  • May include: A white pickup truck with a black and white bed and a crane arm. The truck is being assembled on a table with tools and other parts scattered around it.
  • May include: A black semi-truck with a flatbed trailer hauling a red, black, and white off-road vehicle. The off-road vehicle has the words "Rockstar Puncher" printed on the side.
  • May include: A black toy truck with a flatbed trailer and large tires. The truck is hauling a red toy truck with a black and white design. Both trucks are on a gravel path in a wooded area.
  • May include: A clear plastic bag containing four black metal axles. The bag is labeled "Oppai Factory Anime Slaps and RC Car Parts".
  • May include: Close-up of black metal M2.5 screws for TRX4m. The screws are on a white surface with a gray and white grid pattern. The text "Factory" is visible in the background.
  • May include: A set of black and silver metal hardware for a remote control car. The hardware includes three black hex shafts, two silver hex shafts, and four silver hex nuts.
  • May include: Close-up of four black tires with silver rims and five black metal parts. The tires are on a white surface with a grid pattern and the word "Factor" printed in gray.
  • May include: Close-up of a black tire with a silver rim and a black axle. The tire has a knobby tread pattern.
  • May include: A close-up of a red and black model car chassis with black tires. The chassis is made of metal and has a suspension system. The car is being assembled on a white surface.
  • May include: A white pickup truck with a black and white bed and a crane arm. The truck is being assembled on a table with tools and other parts scattered around it.
  • May include: A black semi-truck with a flatbed trailer hauling a red, black, and white off-road vehicle. The off-road vehicle has the words "Rockstar Puncher" printed on the side.
  • May include: A black toy truck with a flatbed trailer and large tires. The truck is hauling a red toy truck with a black and white design. Both trucks are on a gravel path in a wooded area.
  • May include: A clear plastic bag containing four black metal axles. The bag is labeled "Oppai Factory Anime Slaps and RC Car Parts".
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Oppai Factory m2.5 7mm Dually Hex Adapters for TRX4m (2 Pairs)

OppaiFactory  
5 out of 5 stars

Item highlights

  • Made to order

Seller's description

7mm Hex Dually adapters that work on a number of Mini Crawlers. Uses a m2.5 (Fits TRX4m) stainless riser with a Printed sleeve to give the 7mm Hex profile.

Includes a set of 4 (x2 16mm & x2 18mm) adapters.

Simply install your 1st wheel, then thread the adapter like any wheel nut. Use the 2nd wheel to tighten it and add the wheel nut.



Free Lifetime Replacements:

I understand that 3d parts have can be more susceptible to breaks over metal or injected nylon parts, so for as long as I am business I offer free lifetime replacements of any parts that break for any reason. Simply cover the shipping, and I can ship out any replacement part or parts you need to make your rig whole again. If you are international, I understand shipping costs more so I will give you multiple sets of whichever part was broken to save you if you have another accident in the future. All of my products evolve over time if I find a better method or update I can do to improve them. If you do have a break on an older ver. of the part, then I will supersede you to the current ver. for only the cost of shipping.

Disclaimer:

This is a 3D printed part. It is made from PLA+ Plastic. It has an inherent "layered" look and may require some slight modification if your vehicle is fitted with other aftermarket parts.

Please view my packaging and inspect the package BEFORE handing it to young children. While my logo is suggestive, it is not unsightly, but may require the approval of a responsible parent before giving it (and the small contents inside) to a child.

Due to a rather insane review I received, I need to state this, and be sure anyone else so inept HAD the opportunity to read this...

View more

Item review

Why this review appears

All reviews are from verified buyers. This review is shown automatically based on factors like recency, whether it includes comments, your chosen language, and whether the rating reflects the typical experience with the shop.

Summarized by AI

Great quality As described Looks great Love it Fits well Helpful seller Fast shipping

“Very well made I have ordered from this Etsy seller always good stuff”

David

12 days ago

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In 5 carts

Price:$15.99

You can only make an offer when buying a single item

Shipping & return policies
  • Get it by
    Nov 14-19
  • Returns & exchanges
    Accepted within 30 days
  • Cost to ship
    $5.99 to United States, 43215.

Reviews for this item

What buyers say, summarized by AI: Great quality As described Looks great Love it Fits well Helpful seller Fast shipping

5.0

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

(81 reviews)

4.9 Item quality
4.9 Shipping
4.9 Customer service
96% Buyers recommend
Filter by category
5 out of 5 stars 5 This item

David Oct 28, 2026

Very well made I have ordered from this Etsy seller always good stuff

David Oct 28, 2026

5 out of 5 stars 5 This item

Kory Sep 29, 2026

Absolutely awesome product. These 7mm dually hex adapters completely transformed my Arktos 6x6 build. The fit was excellent, installation was straightforward, and the wider stance gave the truck exactly the aggressive look I was after while still keeping it fully usable as a trail/crawler rig. They feel solid and have held up great. I had a pretty unusual custom build in mind, and these adapters made it possible. Great product from a seller making genuinely cool and useful parts for the RC community. I’d absolutely buy from Oppai Factory again. Highly recommended!

Kory Sep 29, 2026

5 out of 5 stars 5 This item

Matthew Aug 11, 2026

Exactly what i was looking for

Matthew Aug 11, 2026

5 out of 5 stars 5 This item

Reed Jul 24, 2026

These are great. Just what I needed.

Reed Jul 24, 2026

Photos from reviews

Seller's description

Specifications

May include: Close-up of black metal M2.5 screws for TRX4m. The screws are on a white surface with a gray and white grid pattern. The text "Factory" is visible in the background.

7mm Hex Dually adapters that work on a number of Mini Crawlers. Uses a m2.5 (Fits TRX4m) stainless riser with a Printed sleeve to give the 7mm Hex profile.

Includes a set of 4 (x2 16mm & x2 18mm) adapters.

Simply install your 1st wheel, then thread the adapter like any wheel nut. Use the 2nd wheel to tighten it and add the wheel nut.



Free Lifetime Replacements:

I understand that 3d parts have can be more susceptible to breaks over metal or injected nylon parts, so for as long as I am business I offer free lifetime replacements of any parts that break for any reason. Simply cover the shipping, and I can ship out any replacement part or parts you need to make your rig whole again. If you are international, I understand shipping costs more so I will give you multiple sets of whichever part was broken to save you if you have another accident in the future. All of my products evolve over time if I find a better method or update I can do to improve them. If you do have a break on an older ver. of the part, then I will supersede you to the current ver. for only the cost of shipping.

Disclaimer:

This is a 3D printed part. It is made from PLA+ Plastic. It has an inherent "layered" look and may require some slight modification if your vehicle is fitted with other aftermarket parts.

Please view my packaging and inspect the package BEFORE handing it to young children. While my logo is suggestive, it is not unsightly, but may require the approval of a responsible parent before giving it (and the small contents inside) to a child.

Due to a rather insane review I received, I need to state this, and be sure anyone else so inept HAD the opportunity to read this...

Delivery details and policies

  • Get it by
    Nov 14-19
  • Returns and exchanges
    Accepted within 30 days
  • Ships from
    Sedro Woolley, WA
  • Cost to ship
    $5.99 to United States, 43215

    There was a problem calculating your shipping. Please try again.

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Meet your seller

OppaiFactory
Oppai Factory
OppaiFactory ·

Sedro-Woolley, Washington

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience. 4.9
·
5.9k sales
·
3 years on Etsy

Usually responds in a few hours

Smooth shipping Has a history of shipping on time with tracking.

Speedy replies Has a history of replying to messages quickly.

Rave reviews Average review rating is 4.8 or higher.

Disclaimer: As with all children's products, adult supervision is required. Products that contain small parts may pose a choking hazard and should not be used by children under 3. Sellers are responsible for following applicable laws and regulations, including posting items with accurate labeling and warnings. Etsy assumes no responsibility for the accuracy, labeling, or content of sellers' listings and products. Always read labels, warnings, directions and other information provided with the product before using it. If you have any questions, message the seller. See Etsy's Terms of Use for more information.

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