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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Fonzon ARRMA 6S Front Rear Differential Pinion Set 43T 10T FZCS64310TThe Fonzon FZCS64310T ARRMA 6S Front Rear Differential and Pinion Set is a fully assembled 43T 10T stock ratio drivetrain upgrade designed for compatible ARRMA 6S vehicles needing stronger gears, smoother power transfer, and improved durability. Features Fully Assembled Differential Set: Supplied factory assembled and ready to install as a front or rear differential and pinion upgrade 43T 10T Stock Ratio: Uses a 43 tooth ring gear and 10 tooth pinion
The Fonzon FZCS64310T ARRMA 6S Front Rear Differential and Pinion Set is a fully assembled 43T/10T stock-ratio drivetrain upgrade designed for compatible ARRMA 6S vehicles needing stronger gears, smoother power transfer, and improved durability.
Features
- Fully Assembled Differential Set: Supplied factory assembled and ready to install as a front or rear differential and pinion upgrade
- 43T/10T Stock Ratio: Uses a 43 tooth ring gear and 10 tooth pinion for a 4.30 ratio commonly used across ARRMA 6S factory-style setups
- 7075-T6 Aluminium Case: Lightweight aluminium differential case provides a strong housing with an excellent strength-to-weight ratio
- CNC Steel Gears: Nickel-chromium alloy steel gears support high strength and reliable drivetrain performance
- Powder Metallurgy Gear Components: Drive bevel, planetary, and ring gear components are designed for long service life under load
- Pre-Filled Diff Oil: Supplied filled with 100K cSt silicone differential oil for controlled and consistent power delivery
- Extended Drive Cups: +1.5mm nickel-chromium alloy steel drive cups help reduce drivetrain misalignment under load
- Sealed Adapter Cup Bearings: High-quality sealed bearings help support smooth and efficient rotation
- Grade 12.9 Screws: Titanium-coated screws provide strong and corrosion-resistant assembly hardware
- ARRMA 6S Upgrade Part: Designed for high-torque bashing, racing, and demanding off-road drivetrain use
Specifications
- Brand: Fonzon
- Part Number: FZCS64310T
- Product Type: Front or rear differential and pinion set
- Application: ARRMA 6S front or rear drivetrain upgrade
- Gear Ratio: 43T ring gear / 10T pinion, 4.30 stock ratio
- Diff Oil: 100K cSt silicone oil
- Case Material: 7075-T6 aluminium
- Gear Material: Nickel-chromium alloy steel and powder metallurgy components
- Drive Cups: +1.5mm extended nickel-chromium alloy steel
- Bearings: Sealed adapter cup bearings
- Hardware: Grade 12.9 titanium-coated screws
- Assembly: Fully assembled and ready to install
Compatibility
- ARRMA Kraton 6S BLX
- ARRMA Typhon 6S BLX
- ARRMA Outcast 6S
- ARRMA Notorious 6S
- ARRMA Talion 6S
- ARRMA Mojave 6S
- ARRMA Infraction 6S
- ARRMA Felony 6S
- ARRMA Fireteam 6S
Includes
- 1 x Fonzon ARRMA 6S 7075-T6 aluminium assembled front or rear differential and pinion set with steel gears
FAQ
Is the Fonzon FZCS64310T differential already assembled? Yes. The Fonzon FZCS64310T differential and pinion set is supplied fully factory assembled and ready to install.
Can the Fonzon FZCS64310T be used in the front or rear? Yes. The Fonzon FZCS64310T is designed as a front or rear differential and pinion set for compatible ARRMA 6S vehicles.
What gear ratio does this differential use? The Fonzon FZCS64310T uses a 43T ring gear and 10T pinion, giving a 4.30 stock-ratio setup.
What diff oil is included? The Fonzon FZCS64310T differential is pre-filled with 100K cSt silicone differential oil.
Is this a genuine ARRMA part? No. The Fonzon FZCS64310T is an aftermarket drivetrain upgrade made by Fonzon for compatible ARRMA 6S vehicles.
Important Notes
- This is an aftermarket Fonzon upgrade part, not a genuine ARRMA factory spare part.
- Check your ARRMA vehicle manual, exploded diagram, and drivetrain ratio before fitting to confirm front or rear differential compatibility.
- This listing is for one assembled differential and pinion set only. Vehicle, tools, oils, diff housing hardware outside the supplied assembly, and other drivetrain components are not included.
- After installation, check gear mesh, drivetrain movement, screw tension, and diff operation before running the vehicle.
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
4.1 ★★★★★
Based on 59 reviews
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Product Reviews
★★★★★ 5
Labrador Retriever Fun Toy
Color: Yellow
Excellent for older Labrador Retriever with a soft mouth. 2 levels of movements. Colorful. Recharge quickly too, cable included. 2 velcro type covers.
Fairly chew resistant, watch your dog, as with any toy! Good size, no worries about my Labrador swallowing it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
★★★★★ 5
Great engaging toy for my border collie
Color: Blue
I have an 8 yr old border collie with an injured rear hock, so she can't chase the Frisbee any longer. This toy, when set on high, kicks her hunting instincts in, and she chases it, brings it back, and keeps it between her paws until it activates *or she bumps it). The plastic 'holey' covering let's her get a good grip on it, and it is a little larger than a baseball. Good quality plastic/soft rubber covering.
It charges quickly, and has unpredictable jumps and rolls unlike some others that just run on 1 track. She would play with it all day if I let her. She brings it to me to play with her, but it doesn't really need a human's intervention. A tooth will occasionally hit the small control and turn it off, but no concerns about it falling apart or her ripping it apart. Highly recomment
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
★★★★★ 3
Not as durable as it could be, but fun
Color: Yellow
Our 55 lb lab has fun with this toy, but it's not lasting long. The ball itself is hard plastic and the yellow rubber wrap around it has already been chewed through n several places. It did come with a fabric cover, but that, too, is not durable. Would not recommend leaving with your dog unattended as they could eat the rubber off in no time. But to bring out occasionally while watching the dog, which is what we do, it does provide some fun for all!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 4
Durable enough for my dog's tough play. She loves this interactive ball.
Color: Blue, Color: Blue
I love these interactive ball toys. My dog gets so excited and engaged with them. I went through 3 of them that my dog destroyed in a short time. They simply were not durable enough for her tough play. So far, we have had this one for a few weeks, it is holding up and withstands her chewing and rough play, and she loves it. It keeps her busy for a long time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
★★★★★ 5
Great toy for old dogs
Color: Yellow
Great to bring a old dog back to his old self. Have a 10 yr old who has a little shoulder pain but needs a little light excitement. This did the trick, he paws it a little and enjoys moving it around. It can take his biteing without breaking.
Hopeing our small dog whos afraid of it will watch and get over her fear. She learns everything from him.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
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