Traxxas Velineon VXL-4s Electronic Speed Control, waterproof (brushless) (fwd/rev/brake) TRX3445

Overview

The Traxxas Velineon VXL-4s Electronic Speed Control is a premium waterproof brushless ESC designed to deliver exceptional performance for serious RC enthusiasts across the UK. Whether you're running a high-performance brushless RC car, buggy, or truck, this advanced speed controller transforms the power of 2s to 4s LiPo batteries into staggering acceleration, precision control, and competitive-edge braking performance. The VXL-4s is engineered for drivers who demand the very best from their RC vehicles, offering features that were previously only available in professional racing equipment.

This waterproof brushless speed controller is perfect for anyone looking to upgrade their ready to run RC vehicle or build a competition-grade setup. The Velineon VXL-4s bridges the gap between casual weekend bashing and serious track racing, making it an excellent choice for both experienced RC enthusiasts and those stepping up to brushless power for the first time. With its combination of advanced telemetry, intuitive braking technology, and robust construction, the VXL-4s is recognised as one of Traxxas's most capable ESC options for 1/10 scale RC vehicles and other applications requiring reliable, high-performance speed control.

Built with the latest in Traxxas engineering, this waterproof brushless ESC incorporates innovations that set it apart from standard speed controllers. The patent-pending High-Resolution Linear Braking system provides feedback that feels natural and responsive, while the selectable BEC voltage and built-in telemetry give you complete control over your vehicle's performance. Whether you're competing at the track or enjoying high-speed runs, the VXL-4s delivers the precision and reliability that serious RC racers demand.

Key Features

• High-Resolution Linear Braking — This patent-pending Traxxas innovation delivers intuitive, precise braking that responds instantly to your input, allowing everything from feather-touch speed correction to full-power late braking manoeuvres. The high-resolution communication loop keeps you fully connected and in control for a genuine competitive edge on the track.
• Waterproof Construction — Fully sealed against water ingress, this brushless ESC can handle wet conditions and splashes without compromising performance or reliability, making it suitable for challenging outdoor environments and unpredictable weather.
• Selectable Dual-Voltage BEC — Choose between 6.0 volts for standard servos or a powerful 7.4-volt setting for high-performance servo options like the Traxxas 2280, 2255 and 2250. High-torque servos like the Traxxas High-Torque 600 gain over 20% more torque at 7.4 volts with faster transit times.
• Real-Time Built-In Telemetry — Monitor your ESC performance in real time via the Traxxas Link app, giving you instant access to critical data about voltage, temperature, and motor performance during operation.
• Three Programmable Drive Profiles — Switch between Sport, Race, and Training modes to tailor the ESC's behaviour to different driving conditions, skill levels, and competition requirements. Each profile can be customised to suit your specific needs.
• Traxxas EZ-Set One-Button Setup — The simplified setup procedure gets your brushless ESC configured and ready to run in minutes, with no complicated programming required. Perfect for quick field adjustments and easy configuration changes.
• Extra-Large Heat Sink — The generously sized heat sink helps the ESC run cooler during extended run times, improving efficiency and reliability. An optional cooling fan (model 3340) can be attached to the dedicated auxiliary fan connector for even better thermal management during intense racing sessions.
• Integrated Protection Circuits — Multiple safety features protect against low-voltage cutoff, thermal shutdown (two-stage), and other hazardous conditions, ensuring your battery, motor, and ESC stay safe during operation.
• LED Status Lights — Clear visual indicators display the ESC's operational status, making it easy to diagnose connectivity and programming issues at a glance.
• Compatible with 2s to 4s LiPo Batteries — This brushless speed controller works seamlessly with 2s (7.4V), 3s (11.1V), and 4s (14.8V) LiPo battery packs, offering flexibility in your power setup choice.
• Traxxas High-Current Battery Connectors — Heavy-duty connectors ensure reliable power transfer and reduce resistance for maximum efficiency and performance.
• Traxxas 6.5mm Motor Bullet Connectors — Standard Traxxas connectors make motor compatibility straightforward and ensure secure, reliable electrical connections.

Technical Performance

The Velineon VXL-4s is engineered to deliver serious performance in a compact, lightweight package. Measuring just 61 x 53 x 36mm and weighing a mere 119 grams, this waterproof brushless ESC fits easily into tight spaces whilst providing the electrical capacity to handle powerful brushless motors. The unit accepts input voltages from 7.4V to 16.8V (2s to 4s LiPo), giving you the flexibility to choose your preferred battery configuration for your specific RC vehicle and driving style. The selectable BEC output voltage (6.0V or 7.4V) ensures compatibility with a wide range of servo options, from basic standard servos to high-performance units that benefit from the extra voltage.

The ESC features RX input for receiver connectivity and an auxiliary fan connector for optional cooling upgrades, allowing you to extend run times and maintain peak performance during demanding racing sessions. Two-stage thermal protection automatically throttles performance if temperatures rise, protecting your equipment from damage whilst allowing the ESC to function at maximum efficiency most of the time. The High-Resolution Linear Braking system represents a major engineering advance, using a fast communication loop to process brake commands with unprecedented precision, translating your driving inputs into smooth, controllable deceleration. This technology transforms how brushless RC vehicles handle corner entry and late braking, giving competitive drivers a significant advantage. For serious RC enthusiasts in the UK looking for a brushless speed controller that combines reliability, performance, and advanced features, the VXL-4s sets the standard.

What's in the Box

• Traxxas Velineon VXL-4s Waterproof Brushless Electronic Speed Control (TRX3445)
• User manual and quick-start guide

What You Need to Complete

• 2s to 4s LiPo battery pack (7.4V to 14.8V recommended)
• LiPo battery charger
• Brushless motor compatible with Traxxas 6.5mm bullet connectors
• RC receiver and servo
• RC transmitter (radio controller)
• RC vehicle chassis or body
• Optional: Traxxas cooling fan (model 3340) for extended run times
• Optional: Traxxas Link app for advanced telemetry and programming features

Frequently Asked Questions

• Is the Traxxas Velineon VXL-4s suitable for brushless RC vehicles? — Yes, absolutely. The VXL-4s is specifically designed as a waterproof brushless electronic speed controller. It's compatible with brushless motors featuring Traxxas 6.5mm bullet connectors and is engineered to deliver smooth, responsive power delivery and precise braking with brushless motor systems.
• What battery does the Velineon VXL-4s need? — This brushless ESC is compatible with 2s, 3s, and 4s LiPo battery packs, accepting input voltages from 7.4V (2s) up to 14.8V (4s). Most users choose 3s or 4s LiPo for optimal performance, though the choice depends on your vehicle, motor, and driving style.
• Can I use the VXL-4s in wet conditions? — Yes, this is a fully waterproof brushless ESC designed to handle water exposure and splashes. The sealed construction makes it suitable for rainy days, water crossings, and other wet environments common in UK RC racing.
• How does the High-Resolution Linear Braking system improve performance? — Unlike traditional ESC braking, the High-Resolution Linear Braking system uses a fast communication loop to process brake commands thousands of times per second. This allows you to apply precisely calibrated braking force, from gentle speed control to hard late-braking, with a natural, intuitive feel that's impossible with standard controllers.
• What is the difference between the 6.0V and 7.4V BEC settings? — The 6.0V setting is designed for standard servos, whilst the 7.4V setting powers high-performance servo options like the Traxxas 2280, 2255, and 2250. The higher voltage provides more torque and faster response times—high-torque servos like the Traxxas High-Torque 600 gain over 20% additional torque at 7.4 volts with significantly faster transit times.
• Can I monitor my ESC performance while driving? — Yes, the built-in real-time telemetry can be accessed via the Traxxas Link app, which displays voltage, temperature, and motor performance data during operation. This gives you complete visibility into your ESC's behaviour and helps you optimise performance.
• What are the three programmable drive profiles? — The VXL-4s offers Sport, Race, and Training modes. Sport mode is designed for casual driving, Race mode optimises performance for competitive track use, and Training mode is ideal for beginners or when you want reduced acceleration and braking intensity.
• Can I fit a cooling fan to this ESC? — Yes, the VXL-4s features a dedicated auxiliary fan connector compatible with the optional Traxxas cooling fan (model 3340). The large integrated heat sink keeps temperatures manageable, but adding a cooling fan extends run times during intense racing sessions.
• Is this ESC difficult to set up? — No. The Traxxas EZ-Set one-button setup system gets your brushless ESC configured and ready to run in minutes without complicated programming, though advanced users can access deeper programming options via the Traxxas Link app.
• What protection features does the VXL-4s include? — The ESC includes integrated protection circuits covering low-voltage cutoff, two-stage thermal shutdown, and other safety features. These protect your battery, motor, and ESC from damage caused by over-discharge or overheating.

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 Velineon VXL-4s Electronic Speed Control, waterproof (brushless) (fwd/rev/brake) TRX3445 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.