Overview
The Traxxas Hold Down Battery Retainer (TRX6727X) is an essential upgrade for Traxxas Stampede 4x4 owners who want to maximise their battery capacity and performance on the track or trail. This extended battery hold-down system is specifically engineered to accommodate taller, multi-cell LiPo battery packs that would otherwise be too tall to fit in the standard battery tray. Whether you're a seasoned RC enthusiast running competitive setups or a weekend basher looking to extend your run times, this battery expansion kit opens up a whole new range of high-capacity power options for your Stampede 4x4 RC truck.
Designed and manufactured by Traxxas, a recognised leader in RC car innovation, this battery hold-down retainer transforms your Stampede 4x4 into a platform capable of accepting LiPo packs up to 42mm in height. For UK RC hobbyists and racers, this means access to premium 3S and higher capacity batteries from trusted brands like Turnigy that deliver improved performance, extended runtime and better power delivery. The installation is straightforward and requires no complex modifications to your vehicle, making it an ideal upgrade for both beginners and experienced modellers alike.
Real-world customer feedback confirms the effectiveness of this product. Verified purchasers report seamless installation and excellent fit quality with popular hard-case 3S LiPo packs and high-capacity alternatives, allowing for snug, secure battery mounting without any movement or rattling during aggressive driving. This battery hold-down represents excellent value for money and is a must-have component for any Stampede 4x4 owner looking to get more performance from their ready-to-run RC truck.
Key Features
- Extended Battery Clearance — Accommodates LiPo battery packs up to 42mm tall, which is significantly higher than the standard battery tray allows, giving you access to multi-cell hard-case and soft-pack batteries that deliver superior capacity and performance compared to smaller alternatives.
- Stampede 4x4 Specific Design — Engineered precisely for the Traxxas Stampede 4x4 platform, ensuring perfect fitment and compatibility without requiring any chassis modifications or cutting, so installation takes just minutes with basic tools.
- Angled Body Clip Design — The specially angled body clip mechanism provides secure retention and a snug fit that prevents battery movement during cornering, acceleration and high-speed runs, maintaining perfect weight distribution and handling characteristics.
- Multi-Cell Battery Support — Designed to safely retain and support the weight of larger multi-cell LiPo battery configurations, including popular 3S hard-case packs from manufacturers like Turnigy, without flexing or bending during hard driving.
- Easy Installation — The simple bolt-down design requires no soldering, programming or electronic knowledge, making this an ideal upgrade for modellers of all experience levels, from complete beginners through to seasoned RC car racers.
- Improved Runtime Performance — By allowing taller battery packs with higher capacity (measured in mAh), you can achieve significantly longer running times between charges, reducing downtime and maximising your track or trail time.
- Secure Mounting — Verified owners report that batteries fit snugly without movement, ensuring stable weight distribution that improves handling and prevents loose components that could cause electrical disconnections during racing.
Technical Performance
The Traxxas Battery Hold Down Retainer TRX6727X is engineered using high-quality materials and precision manufacturing to meet Traxxas' exacting standards for durability and performance. The extended design raises the battery tray ceiling to 42mm, accommodating the latest generation of hard-case and soft-pack LiPo batteries that deliver superior energy density and discharge rates compared to older battery technology. The angled body clip mechanism is manufactured to tight tolerances, ensuring perfect alignment with the Stampede 4x4 battery bay whilst maintaining the structural rigidity needed to safely secure batteries weighing 500g or more during aggressive off-road driving. The hold-down retainer works seamlessly with both 3S LiPo packs (which have become the standard power source for modern RC trucks in the UK) and higher-capacity multi-cell configurations. Real-world testing by verified purchasers confirms that popular aftermarket batteries such as the Turnigy 6400 mAh 3S LiPo fit perfectly with this expanded battery tray system, delivering the runtime and performance that competitive RC car enthusiasts demand. The engineering ensures that there is no battery sag or movement during cornering and acceleration, maintaining consistent handling characteristics throughout your driving session. Installation is straightforward for any modeller with basic mechanical skills, requiring only standard RC tools and taking approximately 15-20 minutes to complete.
What's in the Box
- 1x Extended Battery Hold Down Retainer (fits Stampede 4x4)
- Mounting hardware and fasteners (included)
Frequently Asked Questions
- What is the maximum battery height this hold-down supports? — This extended battery hold-down retainer accommodates LiPo battery packs up to 42mm tall, which is substantially taller than the standard Stampede 4x4 battery tray allows. This extra clearance opens up access to high-capacity multi-cell batteries that deliver extended runtime and improved performance.
- Is this compatible with my Traxxas Stampede 4x4? — Yes, this hold-down is specifically engineered for the Traxxas Stampede 4x4 platform. The manufacturer specs confirm this is a Stampede 4x4-only component, so it will not fit other Traxxas models without modification.
- What types of LiPo batteries does this work with? — This battery hold-down has been verified by UK customers to work perfectly with popular 3S hard-case LiPo packs, including high-capacity options such as the Turnigy 6400 mAh 3S LiPo. It supports both hard-case and soft-pack configurations up to 42mm in height.
- How easy is this to install on my RC truck? — Installation is straightforward and requires no soldering, programming or complex modifications to your Stampede 4x4 chassis. Verified purchasers report that the part is very easy to fit, taking just minutes with basic RC tools. This makes it suitable for beginners through to experienced modellers.
- Will a taller battery affect my truck's handling? — The extended battery retainer maintains perfect weight distribution and stability when properly installed. The snug fit prevents any movement or rattling during aggressive driving, ensuring that your truck's handling characteristics remain consistent. In fact, users report improved performance when using larger capacity batteries that provide better power delivery and less voltage sag under load.
- Does this work with hard-case battery packs? — Yes, this battery hold-down has been specifically verified by customers to work excellently with hard-case 3S LiPo battery packs, providing a secure snug fit that prevents any movement during high-speed running or cornering.
- What is the difference between this and the standard battery tray? — The standard Stampede 4x4 battery tray has limited height clearance that restricts you to smaller, lower-capacity battery packs. This extended hold-down retainer raises that ceiling to 42mm, allowing you to install taller multi-cell LiPo batteries with significantly higher capacity (measured in mAh), delivering longer runtime and better performance without any modifications to your chassis.
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 Traxxas Hold down, battery / hold down retainer / battery post / angled Body clip (allows for installation of taller, multi-cell batteries) TRX6727X 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.
- Brand: Traxxas
- Model Number: TRX6727X
- EAN: 0020334672797
- Product Type: Extended Battery Hold-Down Retainer
- Vehicle Compatibility: Traxxas Stampede 4x4
- Maximum Battery Height: 42mm
- Compatible Battery Types: LiPo (2S, 3S, multi-cell)
- Tune-Up Type: Chassis
- Quantity in Box: 1
- Installation Difficulty: Easy
- Tools Required: Basic RC tools
- Installation Time: Approximately 15-20 minutes
- Design Type: Angled Body Clip with Extended Clearance
- Mounting: Bolt-down fasteners included
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
