SAVOX W/PROOF DIGITAL MINI SERVO 8KG/0.10s@6V (TRX 1/16) PLUS SAV-SW1250MG+

Overview

The Savox SW1250MG+ is a premium waterproof, ultra torque digital mini servo that represents the ultimate replacement solution for Traxxas 1/16 scale RC applications. Engineered with cutting-edge digital technology and built to withstand the demanding conditions of competitive RC racing and bashing, this servo delivers exceptional performance and reliability that RC enthusiasts throughout the UK have come to expect from Savox's renowned product line. Whether you're upgrading your Traxxas E-Revo VXL, Slash, or other 1/16 scale Traxxas vehicles, the SW1250MG+ offers the precision control and power necessary to unlock your RC car's full potential.

This servo is specifically designed for those seeking a high-performance replacement for factory-standard servos in ready to run RC models. The SW1250MG+ combines advanced digital servo technology with waterproof construction, making it an ideal choice for off-road adventures, competitive racing, and weekend bashing alike. UK RC enthusiasts will appreciate the servo's compact mini size, which fits seamlessly into tight spaces whilst delivering the torque and speed required for aggressive driving conditions. With its metal gear construction and coreless motor technology, this servo represents a significant upgrade path for anyone looking to improve their RC car's handling and response characteristics.

The plus "(+)" designation indicates this is an enhanced variant featuring Soft Start Mode and Sanwa SSR compatibility, providing additional control options and integration flexibility with modern radio systems. This makes the SW1250MG+ not just a replacement servo, but a genuine performance upgrade that will transform how your 1/16 scale RC vehicle responds to your control inputs.

Key Features

• Full Aluminium Waterproof Case — The servo housing is constructed from premium aluminium with full waterproof sealing, protecting all internal components from moisture, dust and debris. This is essential for RC car owners who enjoy water crossings, wet weather driving and muddy terrain without worrying about servo failure or corrosion damage.
• Strong Metal Gear Train — Rather than using plastic gears that can strip or break under stress, the SW1250MG+ features a robust metal gear train throughout. This dramatically increases durability and extends the servo's lifespan, meaning fewer replacements and better value for your investment in RC car upgrades.
• Ultra Torque Performance — With 8.0 kg-cm of torque at 7.4V (or 6.0 kg-cm at 6.0V), this servo delivers exceptional pulling power for controlling larger control surfaces and managing the forces generated during aggressive turning manoeuvres. The ultra torque output ensures responsive steering even under heavy load conditions.
• High-Speed Digital Response — Operating at 0.10 seconds per 60 degrees at 7.4V (0.12 seconds at 6.0V), the SW1250MG+ delivers snappy, precise control inputs with minimal lag. This rapid response time is crucial for competitive racing applications where millisecond-level precision determines race outcomes.
• Designed for Traxxas 1/16 Vehicles — This servo is specifically engineered to meet the control requirements and physical constraints of Traxxas 1/16 scale models, ensuring perfect fitment and optimal performance. It works seamlessly with models including the Traxxas E-Revo VXL, E-Revo VXL 3M Monster Truck and Slash 1/16 4x4 RTR vehicles.
• Soft Start Mode Technology — The plus variant includes Soft Start Mode, which gradually ramps up servo power when powered on. This prevents sudden jerky movements that could damage other RC components or cause your vehicle to move unexpectedly before you've taken the transmitter, making setup safer and more controlled.
• Sanwa SSR Compatibility — Built-in compatibility with Sanwa SSR radio systems and protocols means you can integrate this servo into modern radio installations without compatibility issues or custom modifications.
• Coreless Motor Technology — The servo uses a lightweight coreless motor design that reduces rotating mass and provides faster response times compared to traditional cored motors. This translates to more precise steering input tracking and quicker servo movement.
• 25-Tooth Spline Output — The servo output shaft uses a standard 25-tooth spline, ensuring compatibility with a huge range of servo horns and control arms available across the UK RC market.

Technical Performance

The SW1250MG+ represents the pinnacle of mini servo engineering, combining digital control electronics with premium materials and meticulous manufacturing quality. At its core sits a coreless motor that delivers exceptional speed and efficiency, spinning at rates that achieve 0.10-second transit times across a full 60-degree servo sweep at 7.4V nominal voltage. The full aluminium waterproof case isn't just protective—it's engineered to manage heat dissipation effectively, ensuring the servo maintains peak performance even during extended driving sessions or hot weather RC car racing. The metal gear train uses precision-cut gears that mesh with minimal backlash, eliminating the slop that can develop in plastic-geared alternatives and ensuring every control input translates directly into vehicle movement with zero wasted motion. With single ball bearing support in the output shaft area, the servo exhibits smooth mechanical performance and long service life. Operating across the voltage range from 4.8V through 7.4V, the SW1250MG+ delivers progressive performance scaling—higher voltage input increases both torque output and servo speed proportionally, giving UK RC enthusiasts flexibility in how they configure their battery systems. The servo's ultra-low idle current consumption (just 5mA at 4.8V and 6.0V) means minimal battery drain when the vehicle is stationary but not powered down. Running current draws remain economical at 80mA at 4.8V and 100mA at 6.0V under no-load conditions, whilst stall current ratings of 1500mA at 4.8V and 1900mA at 6.0V establish reasonable expectations for power system design. The 200mm (± 5mm) wire length provides adequate reach for installation in most 1/16 scale RC vehicles without requiring extension cables in most circumstances. Operating temperature range extends from -10°C to +50°C, ensuring reliable function from cold winter driving to hot summer conditions across the UK and European climate zones. The servo's 333 Hz refresh rate ensures smooth, fluid motion without visible jitteriness that can occur with lower refresh rate servos.

What's in the Box

• Savox SW1250MG+ Digital Mini Servo (waterproof, blue case variant)

What You Need to Complete

• Compatible RC vehicle (Traxxas 1/16 scale recommended, such as E-Revo VXL or Slash 1/16)
• Compatible servo horn (25-tooth spline, typically included with vehicle or servo installation kit)
• Compatible battery system (4.8V to 7.4V NiMh or LiPo, depending on your vehicle configuration)
• Radio receiver with compatible servo protocol (Sanwa SSR or standard PWM compatible)

Frequently Asked Questions

• What is the difference between the SW1250MG and SW1250MG+ servo models? — The SW1250MG+ includes enhanced features over the standard SW1250MG, specifically Soft Start Mode which gradually ramps up servo power when activated, preventing sudden jerky movements that could damage components. Additionally, the plus variant includes built-in Sanwa SSR compatibility, allowing seamless integration with modern radio systems. Both models feature identical core specifications including the same torque output (8.0 kg-cm at 7.4V), speed performance (0.10 seconds at 7.4V), and waterproof aluminium construction.
• Is the Savox SW1250MG+ suitable for Traxxas 1/16 scale RC cars? — Yes, the SW1250MG+ is specifically designed and optimised for Traxxas 1/16 scale applications. It is confirmed compatible with multiple Traxxas 1/16 models including the E-Revo VXL, E-Revo VXL 3M Monster Truck variants in purple and blue, and the Slash 1/16 4x4 RTR Short Course Truck. The compact mini size, waterproof construction and performance characteristics align perfectly with Traxxas 1/16 vehicle specifications.
• What voltage battery system do I need for the SW1250MG+ servo? — The servo operates reliably across 4.8V to 7.4V input, which covers both 4-cell NiMh packs (4.8V) and 2-cell LiPo batteries (7.4V nominal). Your battery choice depends on your complete vehicle setup. Most Traxxas 1/16 vehicles ship with battery systems compatible with these voltage ranges. Higher voltage (7.4V) provides increased torque (8.0 kg-cm vs 6.0 kg-cm) and faster response speed (0.10s vs 0.12s per 60 degrees), so upgrading to a compatible 2S LiPo battery system will unlock the servo's full performance potential.
• Is the SW1250MG+ servo waterproof? — Yes, the servo features full waterproof construction with an aluminium sealed case design. This waterproof rating makes it suitable for water crossings, wet weather driving and muddy terrain. However, like all electronic components, extended submersion or high-pressure water spray should be avoided to maintain long-term reliability.
• What servo horns are compatible with the SW1250MG+? — The servo uses a standard 25-tooth spline output, which is one of the most common servo horn configurations in the RC hobby. This means you can source servo horns from multiple manufacturers across the UK RC market. Standard servo horn packs typically include horns with 25-tooth spline compatibility.
• How does the servo's refresh rate affect performance? — The 333 Hz refresh rate ensures smooth, responsive control without visible jitteriness. Higher refresh rates mean the servo updates its position more frequently in response to radio transmitter inputs, resulting in fluid, natural-feeling control. This high refresh rate is particularly beneficial for competitive racing applications where steering precision matters most.
• Can I use the SW1250MG+ with older radio systems? — The servo is compatible with any standard PWM-protocol radio system, which covers virtually all conventional RC surface radios. The Sanwa SSR compatibility is an additional feature for those using modern Sanwa radio systems. If you have an older Futaba, Spektrum or other conventional RC radio system, the SW1250MG+ will work perfectly with it.
• What is the servo's current draw at different voltages? — Under no-load running conditions, the servo draws 80mA at 4.8V or 100mA at 6.0V. Idle current (when not moving) is minimal at just 5mA. Under stall conditions (maximum load), current reaches 1500mA at 4.8V or 1900mA at 6.0V. These specifications help you size your vehicle's power system correctly to ensure adequate power delivery without undersized ESCs or batteries.
• What is the servo's maximum travel range? — The servo has an operating travel of 100 degrees under standard control (1000-2000 microsecond pulse widths), with maximum possible travel of approximately 130 degrees when using the extended pulse width range (800-2200 microseconds). Most control applications use the standard 100-degree range which provides ample steering movement for 1/16 scale RC vehicles.
• Is the Soft Start Mode feature useful? — Yes, Soft Start Mode is a beneficial feature that gradually ramps up servo power when the system is powered on. This prevents the servo from suddenly snapping to its full range immediately, which could cause component damage, unexpected vehicle movement, or control arm stress. It's particularly useful during setup and testing when you want controlled, predictable servo behaviour before taking full control of the vehicle.

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 SAVOX W/PROOF DIGITAL MINI SERVO 8KG/0.10s@6V (TRX 1/16) PLUS SAV-SW1250MG+ 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.