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Description
ARRMA 39T MOD1 Spool Gear 8mm Bore ARA310951The ARRMA ARA310951 39T MOD1 Spool Gear is a steel 8mm bore drivetrain tuning gear designed for compatible ARRMA spool shaft setups needing adjustable gearing and smooth power transfer. Features Gearing Tuning Option: Allows compatible ARRMA vehicles to be geared for different speed, acceleration, and driving conditions Strong Steel Construction: Durable steel material supports long service life in demanding RC use 39 Tooth Gear: 39T spool gear
The ARRMA ARA310951 39T MOD1 Spool Gear is a steel 8mm bore drivetrain tuning gear designed for compatible ARRMA spool shaft setups needing adjustable gearing and smooth power transfer.
Features
- Gearing Tuning Option: Allows compatible ARRMA vehicles to be geared for different speed, acceleration, and driving conditions
- Strong Steel Construction: Durable steel material supports long service life in demanding RC use
- 39 Tooth Gear: 39T spool gear provides a lower gearing option compared with smaller tooth-count spool gears
- MOD1 Tooth Profile: Precision manufactured MOD1 teeth help provide smooth operation with compatible drivetrain components
- 8mm Bore Fitment: Designed to fit an 8mm diameter spool shaft
- Secure Mounting Hardware: Includes set screw and screw pin hardware for secure installation on the spool shaft
Specifications
- Brand: ARRMA
- Part Number: ARA310951
- Product Type: Spool gear
- Tooth Count: 39T
- Gear Pitch: MOD1
- Bore Size: 8mm
- Material: Steel
- Hardware: M4 set screw and M4 screw pin included
- Application: Compatible ARRMA spool shaft drivetrains using 8mm bore MOD1 spool gears
- Intended Use: Gearing adjustment, drivetrain tuning, replacement, and speed setup work
Includes
- 1 x ARRMA 39T MOD1 spool gear with 8mm bore
- 1 x M4 x 4mm set screw
- 1 x M4 screw pin
FAQ
What is the ARRMA ARA310951 spool gear used for? The ARRMA ARA310951 spool gear is used to fine tune gearing on compatible ARRMA spool shaft drivetrains using an 8mm bore MOD1 gear.
What bore size does this gear have? The ARRMA ARA310951 spool gear has an 8mm bore.
What tooth count is the ARRMA ARA310951 gear? The ARRMA ARA310951 spool gear has 39 teeth and a MOD1 tooth profile.
Does this gear include mounting hardware? Yes. The ARRMA ARA310951 gear includes one M4 x 4mm set screw and one M4 screw pin.
Will this fit every ARRMA vehicle? No. OZRC recommends checking your ARRMA vehicle manual or exploded diagram to confirm ARA310951 is the correct 8mm bore MOD1 spool gear before installation.
Important Notes
- Designed for compatible ARRMA spool shaft setups using an 8mm bore MOD1 spool gear.
- Check your vehicle manual, exploded diagram, motor shaft size, and gear mesh requirements before fitting.
- This listing is for the spool gear and included mounting hardware only. Spool shaft, motor, pinion gear, bearings, and other drivetrain components are not included.
- Changing gearing can affect motor temperature, ESC load, acceleration, and top speed. Monitor electronics temperatures after installation.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 4
Better than thin plastic boards
I used to use one of those thin/bendable plastic cutting boards, thinking it's easier to transfer food into pots/pans from the board, but they tend to get bent in time and they're simply too thin and I hated the feeling of my knife pretty much hitting the kitchen counter.
So, I decided to buy this set. I wanted to try a wooden board, but didn't want to spend too much in case I didn't like it, and this set had the perfect price tag and I liked the fact it came with 4 different sizes, so that I can see what size would actually be more useful.
I've been using it for 2 months now they're doing great (except one of them started splitting a bit and started showing some strange black dots on the side... possibly mold??? though I can't think of any reason why mold would grow on just one of them. Maybe it's related to the fact that it's the only one that's cracking. And this is the only reason why I gave 4 stars instead of 5.)
Anyway, apart from that one, the rest are doing well and having 3 boards is plenty.
I like the juice groove to avoid spilling liquid on the board, as it happened so many time using the bendable plastic boards.
I'm handwashing them with dish soap. They seem to dry pretty fast, and so far no stains etc. on the surface. They're not super duper thick so even the largest one is not too difficult to handle.
I sometimes use them to serve some food like appetizers, snacks, pizzas and sandwiches, etc. too!
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Reviewed in the United States on February 12, 2023
★★★★★ 5
Great selection!!
Got these for my wife. She loves them. They are thick and easy to clean. They are very durable. They look beautiful. They function for everything we do in the kitchen.
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Reviewed in the United States on January 16, 2026
★★★★★ 1
Updated review: spitting and splintering
UPDATE:
Originally, one of the boards arrived with a split in it, but I was still happy with them. After a few weeks of light use, hand washing and drying of the boards, I figured it was time to update this review and knock these down to 1 star.
The boards do not hold up very well. Cut marks are deep, and they are starting to splinter. Another of the boards has also developed a split.
Save your money and go with cutting boards from someone else.
ORIGINAL REVIEW:
I bought these cutting boards to cut down on microplastic exposure. This would be a 5 star review except that one of the boards arrived cracked (noticed while hand washing all of them before use). Despite the one cracked board, I did not return them, as I immediately started using the boards, was too busy to deal with it at the time, and the overall value was still there.
These boards are great, the value is excellent since you get several of different sizes. I like that all sizes have the moat for juices, because sometimes you are cutting one or two chicken breasts or one steak and don’t want to have to grab a big board.
I honestly am writing this review because I wouldn’t be surprised if the company sends me a replacement. If they do, I will update the review to reflect their customer service.
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Reviewed in the United States on February 17, 2025
★★★★★ 5
Will buy again
Love my cutting boards. Great quality
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Very Well Made
The Hiware Bamboo Heavy Duty Chopping/Cutting Boards Set is a popular kitchen accessory that offers a practical and eco-friendly solution for chopping, cutting, and slicing various ingredients. Here is a review of the product:
1. Design and Construction:
The set includes four extra-large cutting boards made from high-quality bamboo, which is known for its durability and natural resistance to water and bacteria. The boards are pre-oiled, which helps to enhance their lifespan and maintains their appearance. The thickness and sturdy construction make them suitable for heavy-duty use in both residential and commercial kitchens.
2. Size and Versatility:
The extra-large size of these cutting boards provides ample space for cutting large quantities of meat, vegetables, fruits, and other ingredients. Additionally, the set includes different-sized boards, allowing you to choose the one that suits your specific needs. The boards can also double as serving platters due to their attractive design.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2024
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