FZCSZ646

Overview

Engineered for performance and built for durability, the FONZON 46T Full Metal Split Centre Diff is the ultimate upgrade for your ARRMA 6S rig. This precision-engineered centre differential delivers smooth power distribution and exceptional drivetrain reliability under high loads and extreme terrain, making it an essential component for anyone serious about RC car UK performance. Whether you're bashing, racing, or building a bulletproof ARRMA 6S setup, this ready to run centre diff offers pro-grade drivetrain stability and confidence that transforms your RC experience.

Machined from premium materials and precision-assembled at the factory, this full metal split centre differential arrives ready to run straight out of the box with no additional assembly required. The FONZON centre differential combines cutting-edge engineering with practical usability, making it suitable for both competitive racers and weekend bashers. If you're looking for a high-quality centre diff upgrade for your brushless RC monster truck, stadium truck, or buggy in the ARRMA 6S range, this component delivers the reliability and performance you need.

The 46T gear ratio is specifically engineered for high-speed, straight-line running conditions, trading some low-end torque for increased top speed capability. This makes it particularly well-suited to flat-running platforms such as the INFRACTION and FELONY models, where maximum speed and stability are paramount. For RC enthusiasts in the UK seeking a premium centre differential upgrade with factory assembly and professional-grade construction, the FONZON 46T represents outstanding value and reliability.

Key Features

• Fully CNC-machined nickel-chromium alloy steel gears — Constructed from premium 4340 steel, these gears deliver superior strength and exceptional wear resistance, ensuring your drivetrain withstands the most demanding bashing and racing conditions without premature failure or degradation.
• 7075-T6 aluminium centre housing — This aerospace-grade aluminium alloy provides lightweight rigidity with a finely polished finish, maintaining structural integrity whilst keeping overall weight minimal for improved acceleration and handling characteristics.
• Extended nickel-chromium steel drive cups — The +1.5 mm extended design is optimised to reduce drivetrain angle stress, protecting your suspension geometry and transmission components during aggressive cornering and high-speed manoeuvres.
• Grade 12.9 titanium-coated screws — These premium fasteners feature a corrosion-resistant gold finish, ensuring longevity and reliability whilst maintaining the polished, professional appearance of your RC differential assembly.
• Sealed high-performance adapter cup bearings — Precision-engineered sealed bearings ensure smooth, efficient rotation with minimal friction, allowing your centre diff to spin freely and deliver consistent power distribution across the drivetrain.
• Pre-filled with 100K cSt differential oil — The differential comes completely pre-filled with professional-grade 100,000 centistoke differential oil, eliminating the need for additional setup and providing immediate ready-to-run performance from day one.
• Includes LSD clutch plate set — The limited slip differential clutch plate set enables optional tuning for refined traction control and enhanced handling characteristics, allowing you to dial in your RC car's performance to match your specific driving style and terrain conditions.

Technical Performance

The FONZON 46T Full Metal Split Centre Diff represents professional-grade engineering specifically designed for the ARRMA 6S platform. Built entirely from premium materials with full CNC machining, this centre differential maintains exceptional precision tolerances essential for smooth power delivery under extreme loads. The combination of 4340 nickel-chromium steel gears and 7075-T6 aluminium housing creates an ideal balance between durability and lightweight performance, critical for high-speed RC running. The extended +1.5 mm drive cups reduce drivetrain angle stress, protecting your suspension and transmission geometry during aggressive acceleration, cornering, and terrain impacts. Sealed high-performance adapter cup bearings ensure minimal friction loss and consistent rotation efficiency, whilst the pre-filled 100K cSt differential oil eliminates setup requirements. The 46T gear ratio offers a smaller ratio compared to the 50T alternative, prioritising increased top speed and high-speed straight-line performance over low-end torque, making it ideal for flat-running platforms and competition-level racing. Grade 12.9 titanium-coated screws with corrosion-resistant gold finish ensure longevity and reliability in wet or challenging conditions. Factory assembly and pre-filling means this centre diff arrives completely ready to install and use without any additional preparation or tuning.

What's in the Box

• FONZON 46T Full Metal Split Centre Differential assembly
• Pre-filled with 100K cSt differential oil
• LSD (Limited Slip Differential) clutch plate set for optional tuning

Compatibility

The FONZON 46T Full Metal Split Centre Diff is a direct fit for the complete ARRMA 6S platform, including the following models:

• ARRMA Kraton 6S
• ARRMA Outcast 6S
• ARRMA Notorious 6S
• ARRMA Talion 6S
• ARRMA Mojave 6S
• ARRMA Infraction / Felony 6S
• ARRMA Fireteam 6S
• ARRMA Typhon 6S

46T Gear Ratio Explained

The 46T gear ratio is smaller than the standard 50T option, which means it sacrifices some low-end torque delivery in exchange for significantly increased top speed capability. This characteristic makes the 46T ideal for high-speed, straight-line running conditions where maximum velocity and speed stability are the priority. The 46T ratio is particularly recommended for flat-running platforms such as the INFRACTION and FELONY models, where terrain is typically smooth and relatively obstacle-free. If you're building an RC car specifically for speed runs, racing on smooth surfaces, or competition-level straight-line performance, the 46T ratio delivers the gearing advantage you need. Conversely, if you prioritise acceleration from standstill and low-speed torque delivery in rough terrain, a 50T ratio would be more suitable for your specific needs.

Frequently Asked Questions

• What is a centre differential and why does it matter for my RC car? — A centre differential is a critical drivetrain component that distributes power between your RC car's front and rear axles. The FONZON centre diff ensures smooth, consistent power delivery across all four wheels, eliminating drivetrain bind and allowing your ARRMA 6S to maintain traction and stability during acceleration, deceleration, and cornering. Upgrading to a high-quality full metal centre diff like the FONZON significantly improves handling, reduces premature component wear, and increases overall reliability during demanding driving conditions.
• Will this centre differential improve my ARRMA 6S performance? — Yes, absolutely. The FONZON 46T delivers several performance improvements including smoother power delivery, reduced drivetrain stress, and consistent traction across varying terrain. The sealed high-performance bearings and premium steel gears ensure efficient power transfer with minimal friction loss. Pre-filled with professional-grade differential oil, it arrives ready to deliver immediate performance gains without any additional setup or tuning required.
• Is this suitable for beginners? — The FONZON 46T is suitable for RC enthusiasts at any experience level. Because it arrives factory-assembled and pre-filled with differential oil, installation is straightforward and requires no specialist knowledge. Beginners will benefit from the reliable, professional-grade construction that reduces the risk of drivetrain failure during learning. Experienced racers and bashers will appreciate the precision engineering and tuning options provided by the included LSD clutch plate set.
• What is the difference between the 46T and 50T gear ratios? — The 46T offers a smaller ratio than the 50T, meaning it sacrifices some low-end torque for significantly increased top speed capability. Choose 46T for high-speed, straight-line running on flat terrain such as racing tracks and smooth surfaces. Choose 50T if you prioritise low-end acceleration and performance in rough, technical terrain where low-speed torque is more beneficial. The FONZON 46T is specifically recommended for INFRACTION and FELONY platforms, which are designed for flat-surface speed running.
• Does this come pre-filled and ready to use? — Yes, the FONZON 46T arrives completely pre-filled with 100K cSt professional-grade differential oil and factory-assembled. No additional filling, draining, or setup is required. Simply install it on your ARRMA 6S and start driving. This ready-to-run design eliminates setup complications and ensures immediate performance from the moment of installation.
• What makes the FONZON centre diff different from standard plastic alternatives? — The FONZON is constructed entirely from premium full metal components including CNC-machined 4340 nickel-chromium steel gears and 7075-T6 aluminium housing, compared to cheaper plastic alternatives. Full metal construction delivers dramatically superior strength, durability, wear resistance, and heat dissipation. The sealed high-performance bearings, extended drive cups, and titanium-coated fasteners represent professional-grade engineering that maintains performance and reliability over extended use in demanding conditions.
• Can I tune the LSD clutch plates included with this differential? — Yes, the FONZON includes a complete LSD (Limited Slip Differential) clutch plate set that allows you to adjust traction and handling characteristics to match your specific driving style and terrain conditions. This optional tuning feature enables fine-tuning of differential behaviour, providing flexibility for customising your RC car's performance without requiring additional purchases.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the FONZON 46T FULL METAL SPLIT CENTRE DIFF - ARRMA 6S SERIES FZCSZ646 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.