Product Details
Add the extra durability of the ARRMA 4S transmission to your ARRMA 4X2 BOOST, MEGA, or 3S vehicle using the ARRMA Metal Slipper and Metal Input Gears BOOST Box upgrade package. Then you're ready to power up and go from bashing to all-out blasting!
In The Box - (1) Assembled Metal Slipper Clutch With 57T Mod 0.8 Sintered Spur Gear
- (1) 13T 4S Input Pinion Gear
- (1) All Necessary Hardware
- (1) ARRMA BOOST Transmission Upgrade Product Manual
- (1) ARRMA BOOST Decal Sheet
*Mod 0.8 Motor pinion is required depending on which motor and motor shaft diameter is being used.
Introduction
ARRMA makes it easy and affordable for drivers of ARRMA 4X2 BOOST, MEGA, or 3S vehicles to continue on the path to higher and higher levels of performance — for example, by upgrading the transmissions with even greater durability using the ARRMA Metal Slipper and Metal Input Gears BOOST Box upgrade package. Its strong metal gears give your transmission the additional toughness needed for stepping up to higher-speed, higher-performance brushless power. These are the same metal slipper clutch and metal diff input pinions as those used in 4S ARRMA vehicles. The ARRMA BOOST Metal Slipper and Metal Input Gears BOOST Box prepares your 4X2 BOOST, MEGA, or 3S transmission with the strength to handle more powerful motors, allowing you keep growing as a driver while using the same ARRMA vehicle you already own — upgraded for amplified ARRMA bashing performance.
Features
- Stronger transmission gears for using more powerful motors
- Durability proven in 4S ARRMA vehicles
- Easy to install — video instructions available online
- Bonus ARRMA BOOST decal set included in package
- Experience amplified ARRMA RC bashing performance
The Metal Slipper and Metal Input Gears BOOST Box is recommended for any of the following ARRMA 4X2 MEGA BOOST basher vehicles after upgrading to 3S brushless power using the complete 3S Brushless BOOST Box or Metal Slipper Power Module BOOST Box with a suitable brushless system.
With Spektrum Smart Battery & S120 USB-C Smart Charger:- ARA4102SV4T1 GRANITE™ 4X2 BOOST Monster Truck RTR Orange/Black
- ARA4102SV4T2 GRANITE™ 4X2 BOOST Monster Truck RTR Blue/Black
- ARA4103SV4T1 SENTON™ 4X2 BOOST Short Course Truck RTR Green/Black
- ARA4103SV4T2 SENTON™ 4X2 BOOST Short Course Truck RTR Blue/Black
- ARA4105SV4T1 VORTEKS™ 4X2 BOOST Stadium Truck RTR Red
- ARA4105SV4T2 VORTEKS™ 4X2 BOOST Stadium Truck RTR Gunmetal
Without Battery & Charger:- ARA4102V4T1 GRANITE™ 4X2 BOOST Monster Truck RTR Orange/Black
- ARA4102V4T2 GRANITE™ 4X2 BOOST Monster Truck RTR Blue/Black
- ARA4103V4T1 SENTON™ 4X2 BOOST Short Course Truck RTR Green/Black
- ARA4103V4T2 SENTON™ 4X2 BOOST Short Course Truck RTR Blue/Black
- ARA4105V4T1 VORTEKS™ 4X2 BOOST Stadium Truck RTR Red
- ARA4105V4T2 VORTEKS™ 4X2 BOOST Stadium Truck RTR Gunmetal
The Metal Slipper and Metal Input Gears BOOST Box is also compatible with ARRMA 4X4 MEGA and 3S vehicles.
- Part Type: Transmission Upgrade Kit
- Manufacturer: ARRMA
- Model Number: G-ARA210006 / ARA210006
- EAN Code: 5052127044882
- Slipper Clutch: Assembled Metal with 57T Mod 0.8 Sintered Spur Gear
- Input Pinion Gear: 13T 4S Metal Pinion
- Gear Specification: Mod 0.8
- Spur Gear Teeth: 57T
- Pinion Gear Teeth: 13T
- Gear Material: Sintered Metal (Spur Gear), Metal (Pinion)
- Compatibility: ARRMA 4X2 BOOST vehicles (GRANITE BOOST, SENTON BOOST, VORTEKS BOOST)
- Compatibility: ARRMA MEGA vehicles (4X2 and 4X4)
- Compatibility: ARRMA 3S brushless vehicles (4X2 and 4X4)
- Designed For: Brushless motor upgrades to BOOST, MEGA, or 3S vehicles
- Installation Complexity: Easy with video instructions available online
- Hardware Included: Yes - all necessary fasteners and assembly components
- Instruction Manual: ARRMA BOOST Transmission Upgrade Product Manual included
- Bonus Items: ARRMA BOOST Decal Sheet included
- Motor Pinion Required: Mod 0.8 Motor Pinion (sized to match your brushless motor and shaft diameter - not included, selection depends on motor choice)
- Durability Level: 4S-grade durability in 4X2/3S/MEGA vehicle format
- Construction: Metal components for high-torque applications
- Slipper Clutch Function: Protects drivetrain under extreme load and impact
- Recommended Use: After upgrading to 3S brushless power using ARRMA 3S Brushless BOOST Box or Metal Slipper Power Module BOOST Box with suitable brushless motor system
Overview
Transform your ARRMA 4X2 BOOST, MEGA, or 3S RC vehicle with the ARRMA Metal Slipper and Metal Input Gears BOOST Box upgrade package. This transmission upgrade brings the durability and strength of ARRMA's 4S transmission technology to your existing bashers, allowing you to step up your performance without needing to purchase an entirely new RC car. Whether you're a weekend basher looking for more reliability or someone ready to transition to more powerful brushless motors, this upgrade kit is the affordable pathway to higher performance. Perfect for UK RC enthusiasts who want to maximise the potential of their existing ARRMA fleet, this upgrade package delivers genuine 4S-level durability at a fraction of the cost of buying a new 4S model.
ARRMA has made performance upgrades accessible and straightforward for RC hobbyists of all levels. The Metal Slipper and Metal Input Gears BOOST Box is specifically engineered to bridge the gap between entry-level brushed systems and high-performance brushless setups. When you upgrade your 4X2 BOOST, MEGA, or 3S vehicle with this transmission package, you're investing in the same battle-tested metal gears that come standard on ARRMA's most powerful 4S vehicles. This means you're not experimenting with untested components—you're getting proven, field-tested durability that has already demonstrated its reliability in the most demanding RC applications. Ready to run RC bashers have never been easier to upgrade, and this kit makes the transition to higher-speed, higher-performance brushless power smooth and affordable.
The upgrade process is designed to be straightforward, with comprehensive video instructions available online to guide you through installation. ARRMA understands that not every RC enthusiast has a workshop full of specialist tools or years of mechanical experience, so they've engineered this upgrade package with ease of installation in mind. Once installed, you'll immediately notice improved durability and reliability, giving you the confidence to push your RC vehicle harder and faster than before. This is the ideal upgrade for anyone looking to go from casual bashing to all-out blasting performance.
Key Features
- Metal Slipper Clutch with 57T Mod 0.8 Sintered Spur Gear — The assembled metal slipper clutch included in this package provides significantly greater durability than plastic alternatives, protecting your drivetrain during hard acceleration and sudden impacts. The 57-tooth sintered spur gear is engineered to handle the increased torque and power delivery of brushless motors, preventing premature wear and extending the lifespan of your transmission system.
- 13T 4S Input Pinion Gear — This metal input pinion is the same component used in ARRMA's 4S vehicles, ensuring compatibility with high-performance brushless motors and delivering reliable power transfer from motor to transmission. The 13-tooth configuration is optimised for the power envelope of modern brushless systems, providing the mechanical advantage needed for smooth acceleration and consistent performance.
- 4S Transmission Durability — By installing the same metal slipper clutch and input pinions used in ARRMA's most powerful 4S vehicles, you're bringing military-grade durability to your 4X2 BOOST, MEGA, or 3S model. These components have been proven in the field through countless hours of high-stress operation, meaning you're investing in reliability that's already been thoroughly tested.
- Stronger Transmission Gears for Powerful Motors — The metal construction of these upgrade components means you can safely run significantly more powerful brushless motors than would be practical with stock plastic gears. Whether you're planning to upgrade to a modern high-KV brushless motor or you already have one ready to install, these gears provide the mechanical foundation needed to handle the increased power and torque safely.
- Easy Installation with Video Support — ARRMA provides comprehensive video instructions online that walk you through every step of the installation process. Even if you've never worked on RC transmissions before, the detailed visual guidance makes this upgrade accessible to beginners whilst experienced builders will appreciate the straightforward design. All necessary hardware is included in the box, so you won't need to hunt for small bolts or washers.
- Bonus ARRMA BOOST Decal Sheet — Every package includes an authentic ARRMA decal set, allowing you to customise your upgraded vehicle and show off your investment in performance enhancement. These decals are a nice finishing touch and add to the overall sense of a professional, factory-backed upgrade.
- Compatible with Multiple ARRMA Models — This upgrade package works with a wide range of ARRMA vehicles, including all 4X2 BOOST models (GRANITE BOOST, SENTON BOOST, VORTEKS BOOST), MEGA vehicles, and 3S brushless models. It's also compatible with 4X4 MEGA and 3S variants, making this a versatile upgrade option across the ARRMA range.
- Proven Durability from 4S Performance — You're not taking a risk on experimental components. These are the exact same gears that ARRMA uses in their flagship 4S vehicles, which are renowned for durability in competitive and casual use. This upgrade brings that proven reliability to your existing vehicle at a fraction of the cost.
Technical Performance
The ARRMA Metal Slipper and Metal Input Gears BOOST Box upgrade represents a significant step up in transmission durability and performance capability. The assembled metal slipper clutch features a 57-tooth Mod 0.8 sintered spur gear—sintered metal gears are engineered for high-stress applications where plastic alternatives would wear excessively or break under load. The 13-tooth 4S input pinion gear is the same component found in ARRMA's most powerful vehicles, ensuring mechanical compatibility and optimal power transfer characteristics. These metal components can withstand substantially higher torque loads than plastic gears, making them essential when stepping up to brushless motor power. The slipper clutch mechanism itself protects the rest of your drivetrain by allowing controlled slippage under extreme load conditions—if your wheels suddenly stop (hitting an obstacle or getting stuck), the slipper clutch engages before extreme torque can be transmitted to the differential or other drivetrain components, potentially saving you from expensive breakages. The Mod 0.8 specification indicates the gear module, which affects tooth spacing and load-carrying capacity; this is the professional-grade specification used across ARRMA's performance range. When you combine this upgrade with brushless power—either through ARRMA's complete 3S Brushless BOOST Box upgrade or your own suitable brushless motor system—you create a transmission system capable of handling significantly higher performance levels than the original brushed setup was engineered for. This upgrade is recommended specifically for drivers planning to use brushless power in their ARRMA 4X2 BOOST, MEGA, or 3S vehicles, and represents the most cost-effective way to unlock the full potential of modern brushless motors in vehicles originally designed for brushed motors.
What's in the Box
- 1x Assembled Metal Slipper Clutch with 57T Mod 0.8 Sintered Spur Gear
- 1x 13T 4S Input Pinion Gear (Metal)
- All Necessary Hardware (bolts, screws, and washers for installation)
- 1x ARRMA BOOST Transmission Upgrade Product Manual with installation instructions
- 1x ARRMA BOOST Decal Sheet for vehicle customisation
What You Need to Complete
- Mod 0.8 Motor Pinion — Depending on which brushless motor you're using and your motor shaft diameter, you may need a Mod 0.8 motor pinion gear. This is not included because pinion selection depends on your specific motor choice. ARRMA's compatibility documentation will guide you to the correct pinion size for your setup.
- Basic RC Maintenance Tools — Standard RC tools such as hex drivers, screwdrivers, and possibly a small rubber mallet will be helpful for installation, though many hobbyists already have these in their toolbox.
Frequently Asked Questions
- Is the ARRMA Metal Slipper and Metal Input Gears BOOST Box suitable for brushless motor upgrades? — Yes, this upgrade package is specifically designed and recommended for ARRMA 4X2 BOOST, MEGA, or 3S vehicles that are being upgraded to brushless power. The metal gears provide the durability necessary to safely handle the increased torque and power output of brushless motors. ARRMA recommends this upgrade when using either their complete 3S Brushless BOOST Box upgrade or other suitable brushless motor systems.
- Can I install this upgrade myself, or do I need professional help? — ARRMA has designed this upgrade package with DIY installation in mind. Comprehensive video instructions are available online that walk you through the entire process step-by-step. The package includes all necessary hardware, and most RC enthusiasts with basic mechanical aptitude should be able to complete the installation in an afternoon. If you're completely new to RC maintenance, your local RC hobby shop or experienced RC friends can provide guidance.
- What is the difference between this metal upgrade and the standard plastic gears? — Metal gears are significantly more durable than plastic alternatives and can handle substantially higher torque loads without wearing or breaking. The plastic gears found in standard ARRMA 4X2 BOOST and 3S vehicles are adequate for brushed motors, but when you upgrade to brushless power—which produces considerably more torque—metal gears become essential. The sintered metal construction also ensures longer component lifespan and more consistent performance over time.
- Which ARRMA vehicles are compatible with this upgrade? — This upgrade is compatible with a wide range of ARRMA models, including all 4X2 BOOST variants (GRANITE BOOST, SENTON BOOST, VORTEKS BOOST), MEGA vehicles, 3S brushless models, 4X4 MEGA variants, and 4X4 3S brushless models. The manufacturer's website provides a complete compatibility chart detailing every compatible model number.
- Do I need to buy anything else to complete this upgrade? — Depending on your brushless motor choice, you may need a Mod 0.8 motor pinion gear sized for your specific motor shaft diameter. This is not included because pinion selection depends on your motor. The upgrade package includes all other necessary components and hardware. You'll also want to ensure you have basic RC maintenance tools available.
- What is a slipper clutch and why does it matter? — A slipper clutch is a safety mechanism in RC transmissions that allows controlled slipping when extreme loads are applied. If your RC vehicle hits an obstacle and the wheels suddenly stop, instead of transmitting that shock through the entire drivetrain (potentially breaking the differential, axles, or other components), the slipper clutch engages and allows the motor to continue spinning freely. This protects your expensive drivetrain components from catastrophic failure and extends the lifespan of your vehicle significantly.
- Will this upgrade affect my vehicle's top speed? — The transmission upgrade itself doesn't directly increase top speed, but by enabling you to use more powerful brushless motors safely, it opens the door to higher performance levels. The metal gears and slipper clutch are engineered for durability rather than speed optimisation, but they work together with brushless systems to deliver consistent, reliable high-performance operation.
- Is this suitable for beginners to RC? — This upgrade is best suited for RC hobbyists who already own an ARRMA 4X2 BOOST, MEGA, or 3S vehicle and are ready to take their performance to the next level with brushless power. Absolute beginners would be better served starting with a complete ready-to-run package, but once you've gained experience with your ARRMA vehicle, this upgrade represents an excellent next step towards higher performance.
- How long does installation take? — Most RC enthusiasts can complete the installation in 1-2 hours, depending on their experience level and familiarity with RC maintenance. The step-by-step video instructions help minimise installation time, and having the right tools on hand will speed up the process.
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 ARRMA Metal Slipper and Metal Input Gears BOOST Box G-ARA210006 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.
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