Overview
The Traxxas Hold downs, battery, left & right (2 pcs) / foam spacers (4 pcs) TRX3927X is an essential upgrade for E-Maxx RC enthusiasts looking to unlock the full potential of their electric RC truck. These extended quick release battery hold downs make it effortless to install small or large format, multi-cell battery packs, giving you unprecedented flexibility in your power setup. Whether you're running an older E-Maxx or upgrading your RC car UK collection, this accessory transforms how you manage battery installation and ensures optimal weight distribution and clearance for maximum performance on the trail or track.
Stock E-Maxx hold downs offer limited clearance options of 23mm and 25mm for standard 6- or 7-cell NiMH battery packs, which can be restrictive if you want to experiment with taller, more powerful multi-cell batteries. The reversible TRX3927X accessory hold downs solve this problem by offering additional clearance options for both larger and smaller battery packs, making them the ideal solution for RC enthusiasts who want to customise their battery configuration. The included foam spacers are precision-engineered to centre your battery packs perfectly, ensuring optimum clearance around the battery bay and maintaining ideal weight distribution for balanced handling and stability.
This is a genuine Traxxas product, manufactured to the same exacting standards as all official RC car UK components, and it represents excellent value for anyone serious about getting the most from their E-Maxx. If you're looking to upgrade your ready to run RC truck with better battery flexibility, these hold downs are the perfect accessory to have in your spares box.
Key Features
- Extended Quick Release Design — The quick release mechanism makes battery swaps fast and convenient, allowing you to change between different battery configurations in seconds without tools or complex disassembly, which is essential for bashers and racers who want to minimise downtime between runs.
- Reversible Hold Down Configuration — These hold downs are fully reversible, giving you multiple clearance options in a single accessory, so you can accommodate both compact battery packs and taller multi-cell battery configurations without purchasing multiple parts.
- Supports Large Format Multi-Cell Batteries — Unlike stock hold downs which are limited to standard 6- or 7-cell NiMH batteries, the TRX3927X allows you to install taller and larger capacity multi-cell battery packs, opening up possibilities for extended runtime and higher performance on your RC truck.
- Four Precision Foam Spacers Included — The four foam spacers provided ensure your battery is perfectly centred within the battery bay, which prevents movement during aggressive cornering and maintains optimal weight distribution for improved handling characteristics and stability.
- Optimum Clearance Management — The adjustable hold down system gives you flexibility to fine-tune the clearance around your battery pack, whether you're using a compact pack or a tall multi-cell configuration, ensuring everything fits snugly without fouling on internal components.
- Stock and Custom Battery Compatible — These hold downs work with both standard NiMH packs and modern LiPo batteries, making them suitable for E-Maxx trucks running original equipment or upgraded power systems.
- Easy Installation — No special tools are required to install these hold downs; they simply replace your existing battery hold down system, making this an accessible upgrade for RC enthusiasts of all skill levels.
- Genuine Traxxas Quality — Manufactured by Traxxas to the same durability standards as their vehicles, these hold downs are built to withstand the demands of serious RC bashing and racing without premature wear or failure.
Technical Performance
The Traxxas TRX3927X battery hold downs represent a thoughtfully engineered solution to a common limitation in E-Maxx RC truck design. The reversible design provides multiple clearance options beyond the stock 23mm and 25mm settings, allowing you to run battery packs that would otherwise be impossible to fit in your truck. The engineering behind these hold downs focuses on maintaining structural integrity whilst providing flexibility — the extended design allows for mounting of taller battery configurations without compromising the quick release mechanism that E-Maxx drivers have come to rely on. The four included foam spacers are not merely padding; they are precision-cut to ensure your battery sits perfectly centred in the battery bay, which has direct implications for your truck's weight distribution and handling balance. When your battery is centred, your RC truck's centre of gravity is optimised, leading to more predictable handling characteristics and improved traction in both acceleration and cornering. The materials used in these hold downs are the same durable polymers and metals found throughout the Traxxas E-Maxx platform, ensuring they will withstand the vibrations, impacts, and stresses of regular bashing and competitive use. Whether you're running traditional NiMH cells or modern LiPo batteries, these hold downs provide secure retention without damaging your battery pack, and the quick release mechanism remains responsive and reliable even after hundreds of battery swap cycles.
What's in the Box
- 2x Battery hold downs (left and right pair)
- 4x Foam spacers for battery centring
Frequently Asked Questions
- What battery sizes can the TRX3927X hold downs accommodate? — These hold downs are designed to accommodate small and large format multi-cell battery packs, offering more clearance options than the stock 23mm and 25mm settings. They work with standard 6- and 7-cell NiMH packs as well as taller modern LiPo batteries, giving you flexibility to experiment with different power configurations on your E-Maxx.
- Do I need any special tools to install these hold downs? — No special tools are required for installation. The TRX3927X hold downs simply replace your existing battery hold down system on your E-Maxx, making this an accessible upgrade that any RC enthusiast can perform in minutes.
- Are the foam spacers essential? — Yes, the four foam spacers included with this kit are important for optimal performance. They ensure your battery pack is perfectly centred within the battery bay, which maintains ideal weight distribution and prevents battery movement during aggressive driving, both of which affect your truck's handling and stability.
- Will these hold downs work with my current E-Maxx battery? — Yes, these hold downs are compatible with standard E-Maxx NiMH batteries as well as LiPo packs. The reversible design and included spacers allow you to adapt the hold downs to fit whatever battery configuration you're currently running.
- What is the advantage of reversible hold downs? — Reversible hold downs give you multiple clearance options in a single product. You can flip or adjust them to accommodate both compact battery packs and taller multi-cell configurations, meaning you don't need to purchase different hold down systems for different battery types.
- Can I use these hold downs with aftermarket battery packs? — Yes, the TRX3927X hold downs work with both OEM Traxxas batteries and quality aftermarket NiMH and LiPo packs. The spacers and reversible design ensure secure retention regardless of which brand of battery you choose.
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 downs, battery, left & right (2 pcs) / foam spacers (4 pcs) (allows for installation of taller, multi-cell batteries) TRX3927X 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.
- Manufacturer: Traxxas
- Model number: TRX3927X
- Product type: Battery hold downs and foam spacers
- Compatibility: Traxxas E-Maxx RC trucks
- Quantity: 2x battery hold downs (left and right), 4x foam spacers
- Hold down type: Extended quick release
- Design: Reversible configuration for multiple clearance options
- Standard clearance options: 23mm and 25mm (stock), additional options with TRX3927X
- Battery compatibility: Small and large format multi-cell battery packs, 6-cell and 7-cell NiMH, LiPo batteries
- Spacer material: Foam (4 pieces included)
- Primary function: Allows installation of taller multi-cell batteries with optimum clearance and weight distribution
- Installation: Quick release mechanism, no tools required
- Built quality: Durable materials matching Traxxas E-Maxx standards
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.