Savox SV1271SG+ High Voltage Digital Servo 25kg 0.08s Standard SAV-SV1271SG+

Overview

The Savox SV1271SG+ is a professional-grade high voltage digital servo that represents the pinnacle of servo technology for demanding RC applications. Whether you're piloting large-scale aircraft, competing in 1/8 off-road racing, or pushing your RC car UK models to their limits, this servo delivers the combination of speed, torque, and reliability that serious RC enthusiasts demand. With its advanced coreless motor technology and precision steel gears, the SV1271SG+ is engineered to handle the rigorous demands of competitive RC racing and high-performance flying.

This servo stands out in the crowded RC servo market because it offers something rare: genuine high voltage capability combined with exceptional speed. At just 0.08 seconds per 60 degrees at 7.4V, it's among the fastest servos in its class, whilst simultaneously delivering an impressive 25kg of torque. This perfect balance of speed and strength makes it ideal for applications where both responsiveness and holding power are critical, from maintaining precise control surfaces on large-scale RC aircraft to managing steering inputs on high-speed off-road vehicles.

The SV1271SG+ represents the latest evolution in Savox servo design, featuring the new Soft Start Mode and Sanwa SSR compatibility that characterise the plus-series models. If you're serious about RC performance and refuse to compromise on servo quality, the SV1271SG+ is the professional choice for your ready to run RC setup.

Key Features

• High Voltage Digital Coreless Motor — The servo features a coreless motor design that operates natively at high voltage (6.0V to 7.4V), allowing you to harness the full power of 2S LiPo batteries without additional regulators or converters, delivering superior efficiency and smoother response than traditional brushed designs.
• Exceptional Speed at 0.08 Seconds per 60 Degrees — With response times of just 0.08 seconds at 7.4V, this servo is among the fastest in its class, ensuring crisp, immediate control response for racing applications and precision flying where milliseconds matter.
• Massive 25kg Torque Output at 7.4V — The servo generates 25kg of holding torque at high voltage, providing the strength needed to manage large control surfaces, fight back against wind on aircraft, or maintain steering authority under hard acceleration and braking on 1/8 scale off-road vehicles.
• Precision Steel Gears with Dual Ball Bearings — Super strong and precision-made unique steel gears provide exceptional durability and survive heavy use, whilst dual ball bearings ensure smooth, reliable operation even under continuous high-load conditions, making this servo dependable for competition use.
• Aluminium Centre Case for Improved Cooling and Strength — The hybrid aluminium and composite case design not only looks professional but actively manages heat dissipation during extended operation, whilst providing the structural rigidity needed for demanding RC applications.
• Soft Start Mode and Sanwa SSR Compatibility — The plus-series designation indicates this servo includes modern control features including Soft Start Mode for gentle power-up sequences and compatibility with Sanwa SSR radio systems, making it compatible with professional-grade RC equipment.
• Wide Operating Voltage Range — Operating reliably between 6.0V and 7.4V means you can adjust performance based on your application, running at standard voltage for normal use or pushing to full 2S LiPo power when maximum speed and torque are required.
• 25-Tooth Spline Output Shaft — The standard 25-tooth servo horn spline ensures compatibility with a vast range of aftermarket servo arms and control horns available for RC models across the UK and worldwide.

Technical Performance

The SV1271SG+ represents the cutting edge of servo engineering, combining several critical technologies to deliver uncompromising performance. The coreless motor design is fundamental to this servo's superiority: by eliminating the traditional iron core, Savox achieves faster acceleration response, smoother operation across the entire control range, and significantly improved efficiency compared to brushed motor servos. This translates directly into better handling characteristics for your RC car UK models and more precise control authority for aircraft applications.

Build quality is exceptional throughout. The unique precision steel gears are manufactured to exacting tolerances and hardened to withstand the repeated stress cycles of competitive use, whether you're launching off jumps in 1/8 off-road racing or making fine trim adjustments during high-speed flying. The dual ball bearing construction (2BB configuration) ensures that these gears rotate with minimal friction and maximum smoothness, critical factors when you're asking a servo to make thousands of corrections per second during active pilot input.

The servo operates natively at both 6.0V and 7.4V, making it genuinely high voltage capable without compromise. At 6.0V, you'll get 20kg of torque and 0.11 seconds per 60 degrees of response time — already excellent performance. But when you step up to 7.4V with a 2S LiPo battery, the performance leap is dramatic: 25kg of torque (a 25% increase) and 0.08 seconds response time represent professional-grade servo performance. The servo draws 120mA at 6.0V and 150mA at 7.4V under no-load conditions, rising to 4000mA at 6.0V and 5000mA at 7.4V under stall conditions, ensuring your receiver battery or BEC can handle the load.

Physically compact at 40.3mm length, 20.2mm width, and 37.2mm height, weighing just 63 grams, the SV1271SG+ fits seamlessly into virtually any RC model without excessive weight penalty. The 200mm wire length provides flexibility in servo placement, whilst the 333Hz refresh rate and super high resolution ensure that even rapid control inputs are captured and executed with precision. The servo can handle an impressive 130 degrees of maximum travel (900 to 2100 microseconds), with the neutral position precisely set at 1500 microseconds, making setup straightforward and predictable.

What's in the Box

• Savox SV1271SG+ High Voltage Digital Coreless Servo
• 200mm servo lead with JR-style connector
• Standard servo horn (25-tooth spline)

Frequently Asked Questions

• What makes the SV1271SG+ suitable for large-scale RC aircraft and 1/8 off-road vehicles? — The combination of 25kg torque at 7.4V and 0.08 second response time makes this servo ideally suited to demanding applications. For large-scale aircraft, the high torque maintains control surface authority even in turbulent conditions, whilst the fast response ensures precise trim control. For 1/8 off-road vehicles, the speed enables quick steering corrections during aggressive driving, and the torque prevents servo slop under the intense forces generated by jumping and hard cornering.
• Is this servo compatible with my receiver and radio system? — The SV1271SG+ uses a standard JR-style servo connector and operates on conventional PWM signals (800-2200 microseconds range, 333Hz refresh). It's compatible with any quality RC receiver, and the plus-series designation specifically includes Sanwa SSR compatibility. If you're using professional radio systems common in UK RC racing and flying, this servo will integrate seamlessly.
• What battery does this servo need, and how do I power it correctly? — The SV1271SG+ is a high voltage servo designed specifically for 2S LiPo batteries (7.4V nominal). It will also work with NiMH receiver packs at 6.0V, but the performance advantage comes from operating at 7.4V where it achieves its full 25kg torque and fastest 0.08 second response time. Ensure your receiver battery or BEC (Battery Eliminator Circuit) can supply at least 5A continuous current, as the servo can draw up to 5000mA under stall conditions.
• Will this servo work with my current radio system and equipment? — Almost certainly yes. The servo is compatible with any radio system that uses standard servo PWM signals, including Futaba, Spektrum, Sanwa, and other major brands used by UK RC enthusiasts. The new plus-series models specifically support Sanwa SSR compatibility, expanding your radio options further.
• How does the SV1271SG+ compare to standard voltage servos? — Compared to standard 6.0V only servos, the SV1271SG+ offers 25% more torque (25kg vs 20kg) and significantly faster response (0.08 vs 0.11 seconds) when powered by a 2S LiPo battery. This extra performance comes from dedicated high voltage circuitry rather than simply overpowering a standard servo, making it reliable and efficient rather than stressed and short-lived.
• Is the SV1271SG+ durable enough for competitive racing and heavy use? — Yes, durability is a core strength. The precision steel gears are hardened for longevity, dual ball bearings ensure smooth, long-lasting operation, and the coreless motor design is inherently more robust than brush-type motors. This servo is specified for professional applications including 1/8 off-road competition, where reliability is non-negotiable. Standard Savox warranty coverage provides additional peace of mind.
• Can I use aftermarket servo horns and accessories with this servo? — Absolutely. The 25-tooth spline output is a standard specification, meaning you can use any quality aftermarket servo horn featuring 25-tooth compatibility. This gives you flexibility to optimise your RC car UK setup or aircraft control linkages exactly as you need them.

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 'HIGH VOLTAGE' STD ULTRA FAST 25KG/0.08@7.4V UPDATED SAV-SV1271SG+ 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.