- Brand: Spektrum
- Model Number: SPMSA381
- Servo Type: 9g Sub-Micro Servo
- Weight: 9 grams
- Lead Length: 400mm
- Product Length: 4.4 inches (112mm)
- Product Width: 2.2 inches (56mm)
- Product Height: 0.57 inches (14mm)
- Part Type: Electronics
- Customer Rating: 4.5 out of 5
Overview
The Spektrum 9g Sub-Micro Servo with 400mm Lead is a precision servo component designed for RC enthusiasts who demand reliability and performance in compact form. Whether you're building a high-performance RC car in the UK or fine-tuning an existing model, this sub-micro servo delivers the precision control needed for critical applications. At just 9 grams, this servo is ideal for lightweight RC vehicles and models where weight distribution is crucial to performance. The extended 400mm lead provides flexibility in servo placement and routing throughout your RC setup, making installation easier and more versatile than standard shorter-lead servos.
Manufactured by Spektrum, a brand recognised worldwide for quality RC electronics and components, this servo represents excellent value for builders and enthusiasts. The 4.5 out of 5 customer rating reflects genuine user satisfaction with the product's performance, durability and reliability in real-world RC applications. Whether you're upgrading an existing servo on your RC buggy, monster truck or other RC vehicle, or building a complete custom setup from scratch, this sub-micro servo is a trusted choice among the RC community.
The compact design of this sub-micro servo makes it perfect for confined spaces within your RC model where standard servos simply won't fit. This makes it an essential component for anyone building competition-grade RC cars, customising their existing fleet, or experimenting with advanced RC builds where weight savings and space efficiency are paramount considerations.
Key Features
- 9 Gram Sub-Micro Size — This lightweight servo is engineered to minimise weight in your RC setup without compromising on control authority, making it ideal for performance-focused RC enthusiasts who understand that every gram matters when tuning your RC car for maximum speed and agility.
- 400mm Extended Lead — The significantly longer servo lead gives you considerably more flexibility in servo placement and cable routing within your RC model's chassis, allowing you to position the servo away from the receiver or other electronics components where space is at a premium.
- Precision Control — Spektrum's reputation for engineering precision is evident in this servo's design, delivering the responsive, accurate control inputs you need for competitive RC driving or precise model adjustment and calibration.
- Compact Form Factor — The sub-micro dimensions mean this servo fits into tight spaces and confined mounting locations where full-sized servos cannot be used, expanding your possibilities for custom RC builds and modifications.
- Proven Reliability — Backed by customer ratings of 4.5 out of 5 stars, this servo has proven itself in countless RC applications and builds, giving you confidence in its long-term durability and consistent performance.
- Spektrum Brand Quality — As part of the Spektrum electronics family, this servo benefits from the brand's extensive research, development and quality assurance processes, ensuring you receive a genuine, high-quality component.
Technical Performance
The Spektrum 9g Sub-Micro Servo represents a masterclass in compact servo engineering. Weighing just 9 grams, it delivers precision movement and control in an ultra-compact package measuring 2.2 inches in width, 4.4 inches in length and 0.57 inches in height. This incredibly small servo is perfect for RC applications where weight distribution, space efficiency and performance optimisation are critical factors. The 400mm lead length — significantly longer than standard servo leads — provides exceptional installation flexibility, allowing you to route the servo lead through your RC chassis with minimal restriction and position the servo unit itself away from crowded electronics bays. The engineering quality is evident throughout the build, with smooth mechanical operation and reliable performance across thousands of operating cycles. This servo is built to the same standards that Spektrum applies to all its RC electronics components, utilising precision manufacturing techniques and quality materials to ensure consistent performance in the demanding environment of competitive and recreational RC driving. Whether you're running a 3S LiPo-powered RC buggy, a high-speed RC truck, or any other RC vehicle type, this servo provides the control precision you need without the weight penalty of larger alternatives.
What's in the Box
- Spektrum 9g Sub-Micro Servo with 400mm lead
Frequently Asked Questions
- What is a sub-micro servo and why would I need one in my RC car? — A sub-micro servo is an ultra-compact, lightweight servo designed for RC applications where space and weight are critical factors. Unlike standard servos, sub-micro servos like this Spektrum unit fit into confined areas within your RC chassis and contribute minimal weight to your build, making them essential for high-performance RC vehicles, lightweight crawler builds and custom modifications where every gram of weight reduction translates directly to improved performance and handling characteristics.
- Is the 400mm lead length compatible with all RC radio receivers? — The 400mm extended lead is a standard servo connector length and will work with any RC radio receiver system that uses standard servo connections. The longer lead simply gives you more flexibility in routing and positioning the servo within your RC model compared to shorter standard leads, without requiring any special adapters or modifications to your RC system.
- Can I use this servo in a waterproof RC model or for off-road RC driving? — The specifications provided by Spektrum do not indicate a specific waterproof or weatherproof rating for this servo. If you require a waterproof servo for water-fording RC crawlers or heavy water crossings, you should contact our team at RC Model Shop to discuss waterproof servo alternatives that may better suit your specific RC application and environment.
- What RC vehicle types is this servo suitable for? — The 9 gram sub-micro size makes this servo ideal for lightweight RC vehicles including small-scale RC cars, RC trucks with weight-critical builds, custom RC buggies where weight distribution matters, and any RC application where you need to fit a servo into a confined space or minimise overall vehicle weight for performance optimisation.
- How does the Spektrum 9g servo compare to other sub-micro servos available in the UK market? — This Spektrum servo benefits from Spektrum's reputation for quality engineering and the strong 4.5 out of 5 customer rating indicates it performs reliably in real-world RC applications. The extended 400mm lead provides more flexibility than many competing sub-micro servos which often feature shorter standard leads, and Spektrum's backing ensures you're purchasing a genuine, quality-controlled component with manufacturer support.
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 Spektrum 9g Sub-Micro Servo with 400mm Lead 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.
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.
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