£829.00 inc. VAT
The STIHL RMA 448.3 RV is a premium cordless lawn mower with an 18″ cutting width, Vario self-drive, and a rear roller, expertly designed for creating classic stripes on medium to large lawns. This is the tool only version.
The STIHL RMA 448.3 RV is a battery-powered, self-propelled lawn mower designed for discerning home gardeners who want to achieve a perfectly striped finish on medium-to-large lawns. As a key model in STIHL’s 4 Series range, it combines quiet, emission-free operation with innovative features and robust construction. This specific model is the tool-only version, ideal for those who already own batteries and a charger from the STIHL AK System.
Powered by the versatile STIHL AK System, the RMA 448.3 RV features two battery slots in the powerhead, allowing for quick and easy switching to a second battery to extend runtime. The mower incorporates intelligent electronics for superior performance. STIHL’s CONSTANT POWER feature ensures the motor delivers consistently high power, regardless of the battery’s charge level, preventing the performance drop often seen in other battery tools. For tougher conditions, the POWER BOOST function delivers the maximum possible power when needed. To conserve energy, the operator can activate Eco mode, which automatically adapts the engine speed to the required output, extending the mowing time per charge.
| Battery Model | Max. Area per Charge |
|---|---|
| AK 10 | up to 130 m² |
| AK 20 | up to 260 m² |
| AK 30 | up to 340 m² |
| AK 30 S | up to 340 m² |
Please note: Battery and charger are sold separately. Stated area coverage may vary depending on application and operating mode.
The defining feature of the RMA 448.3 RV is its durable polymer rear roller, engineered to produce classic, crisp stripes. The mower’s deck, also made from a rugged, double-layered polymer, is lightweight, rust-proof, and UV-resistant for exceptional stability and a long service life. It offers a 46cm (18″) cutting width and a central, single-point cutting height adjustment from 15mm to 60mm. The flow-optimised blades are designed for energy efficiency, trimming grass with minimal air resistance to make the most of the battery’s power. Users can choose between two mowing modes: collecting clippings in the large 52-litre grass catcher box, or engaging the mulch mode to finely shred clippings and return them to the lawn as a natural fertiliser.
Operator comfort is central to the mower’s design. The Vario self-drive system allows the mowing speed to be infinitely adjusted between 2.0 and 4.5 km/h via a control lever, matching the user’s personal walking pace. The unique mono-comfort handlebar provides unrestricted access to the grass box for effortless removal and emptying. A fill-level indicator clearly shows when the box is full. The handlebar itself is height-adjustable for ergonomic operation and folds down for compact storage and transportation. Additionally, smooth-running wheels ensure excellent control and manoeuvrability, while an integrated carry handle makes lifting the machine straightforward. The IPX4 certification guarantees splashwater protection, making the mower suitable for use even in damp conditions.
As an authorised UK dealer for STIHL, Sims Garden Machinery has over 100 years of experience in the industry. Customers can see this machine and a wide range of other walk-behind mowers at our Stratford-upon-Avon showroom. Our trained sales staff are on hand to provide expert advice, and every machine purchased locally receives a free PDI (Pre-Delivery Inspection), local delivery, and a comprehensive handover demonstration from our trained mechanics to ensure you can use your new mower safely and effectively. This level of service ensures your machine is ready to perform from the moment it arrives, a commitment that distinguishes us from online box-shifters.
| Battery System | AK System |
| Drive Speed | 2.0 – 4.5 km/h |
| Recommended Battery | AK 30 S |
| Device Weight (without battery) | 27 kg |
| Cutting Width | 46 cm / 18″ |
| Cutting Height | 15 – 60 mm |
| Rated Speed | 3000 rpm |
| IP Rating | IPX4 |
| Max. Area (with AK 10) | 130 m² |
| Max. Area (with AK 20) | 260 m² |
| Max. Area (with AK 30 / 30 S) | 340 m² |
| Grass Catcher Box Volume | 52 L |
| Guaranteed Sound Power Level (LWA) | 94 dB(A) |
| Measured Sound Pressure Level (LpA) | 79 dB(A) |
| Vibration Value (ahw) | 1.80 m/s² |
We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.
No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how you’ll actually use the machine.
We’re a long-standing independent dealer with deep roots in the local area — built on reputation, repeat customers, and word of mouth.
The STIHL RMA 448.3 RV is expertly designed for medium to large domestic lawns. With the recommended AK 30 S battery, it can comfortably mow an area of up to 340 m² on a single charge.
No, this is the “Tool Only” version, which means the battery and charger must be purchased separately. It is fully compatible with all batteries and chargers in the STIHL AK System, making it a great choice if you already own other tools from the range.
The durable polymer rear roller is specifically designed to create classic, sharp stripes on your lawn for a professional and aesthetically pleasing finish. It gently flattens the grass after cutting to produce the striped effect.
Vario self-drive allows you to adjust the mower’s forward speed infinitely between 2.0 and 4.5 km/h using a simple control lever on the handlebar. This enables you to match the mowing speed perfectly to your own walking pace and the specific conditions of your lawn, such as thick grass or sloped areas.
Yes, the mower has an integrated mulching function. You can easily switch from collecting the grass in the 52-litre box to mulching mode, which finely cuts the clippings and returns them to the lawn to act as a natural, nutrient-rich fertiliser.
| Dimensions | 120 × 54 × 54 cm |
|---|---|
| Brand | STIHL |
| Collector SizeThe capacity of the grass collection bag or box in litres. | 52 |
| Cutting MethodThe cutting mechanism used (e.g., Rotary or Cylinder). | Rotary |
| Cutting WidthThe width of the grass cut in a single pass. | 46 cm |
| Deck MaterialThe material the cutter deck is constructed from (e.g., Steel, Aluminium). | Polymer |
| Drive TypeHow the mower is propelled (e.g., Push, Self-Propelled, Variable Speed). | Self-Propelled |
| Mowing FunctionsAvailable mowing modes (e.g., Collection, Mulching, Side-Discharge). | [“Collection”,”Mulch”] |
| Rear RollerIndicates if the mower features a rear roller for creating lawn stripes. | TRUE |
As a brand, STIHL's international reputation goes before it and the name is well known and respected by homeowners and gardening professionals alike.
STIHL has created and honed a number of innovations, particularly in the development of its chainsaws, one of its flagship products. STIHL chainsaws are well known and sought after for their power, sturdy construction, durability and user-friendly features!
We offer a free delivery service for all machines within a 30 mile radius. Not only that; we build, inspect and run up every machine prior to delivery. Making sure you get a fully functional machine that is set-up and ready for use. On delivery we will run through with you any instructions & maintenance advice so you are comfortable with your new machine.
Free local delivery and handover
Industry trained sales team
In-house machinery repairs
Family run since 1908
No account yet?
Create an Account
Reviews
There are no reviews yet.