AS 990 Tahr RC
Categories
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Mulching is a process by which grass cuttings are shredded several times into a fine mulch, which then remains on the surface as natural fertiliser. Special mulching blades with a double cutting plane and a circular mulching unit are used on ornamental lawns, while cross-blade systems or flail mowers are primarily used in high grass.
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Ornamental lawns in both private gardens and public facilities can be maintained with either mulching or collecting mowers. When mulching, the finely-shredded cuttings remain on the surface as natural fertiliser, while collection bags help the operator transport cuttings to a disposal point. Lawns are usually mowed once per week to a cutting height of 40–50 mm, from a maximum height of 15 cm.
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Flower meadows are structurally rich habitats that are extremely important for insects, wild bees, and species that depend on flowers. The key is not to mow frequently, but to cut at the right time. Before the flowering phase, the vegetation can quickly reach heights of 30–40 cm. After that, maintenance is carried out at longer intervals, usually once or twice a year. This form of extensive use requires machines that can safely cut tall, heterogeneous vegetation without putting unnecessary strain on the area. Clean cuts, controlled deposition, and an adapted driving style are essential for preserving plant populations and enabling regeneration.
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Extensively used meadows such as orchards, compensation areas, or roadside greenery are deliberately mowed only once or twice a year. The vegetation reaches heights of 60 to over 100 cm and forms dense, structurally rich stands. This form of maintenance serves to keep the area open and suppress woody plants, not to maintain the lawn. Machines with high throughput, uniform cutting performance, and controlled deposition of the cut material are required. This is the only way to efficiently manage large amounts of biomass without overloading the area or damaging the soil and vegetation.
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Without maintenance, open areas quickly become overgrown with blackberries, clematis, and young trees. In young forests, reforestation areas, or Christmas tree plantations, targeted brush clearing is necessary to secure the desired structures and reduce competition. It is crucial to use maintenance methods that intervene selectively and do not destroy large areas. Mechanical flail mowing technology makes it possible to remove woody growth and vigorous shrubs without unnecessarily damaging the soil structure and root space. This ensures that areas remain usable and ecologically stable in the long term.
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During the mowing season, professional operators often run their machines 5 days per week, 8 hours per day. AS-Motor’s machines are unbeatable in terms of quality, durability and professional work results. Additional advantages include low weight, lashing points and compact transport dimensions.
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Animal burrows, anthills, mole hills and water channels cause uneven terrain. Several AS-Motor machines have high ground clearance, all-wheel drive and limited slip differential, along with appropriately studded field tyres, for uneven terrain.
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AS-Motor engineers machines with high ground clearance, steep ramp angles, low overall weight, optimal weight distribution and a low centre of gravity to perform on slopes.
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All-wheel drive not only ensures performance on inclines over 30 degrees, but also a high level of safety for travel downhill. All-wheel drive delivers propulsion in wet conditions and on uneven terrain – even if the wheels of one axle no longer have traction.
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Remote controlled devices make the mowing of extreme slopes possible. This technology also allows the operator to mow at a safe distance from dust, wasps, ticks and other hazards.
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The AS 50’s high work rate delivers efficient weed removal on large and uneven surfaces such as a car parks, commercial areas and paths. A collection bag eliminates the need for sweeping and surface cleaning.
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Cobblestones and uneven paved areas can be treated for weeds, without the use of chemicals, using mechanical methods. The agile AS 30 is designed for work close to edges, water inlet channels, manholes and on traffic islands with posts and signs.
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Ecological mowing and extensive land management focus on reduced, targeted interventions instead of blanket mowing. Cutting heights, timing, and maintenance intervals are based on vegetation development and site conditions, not on maximum area coverage. Sub-areas are mowed on a rotating basis, while others are deliberately left untouched. This creates varying growth heights, refuges, and stable structures on extensive meadows, compensation areas, municipal green spaces, and in landscape management. Technology is used for control, not intensification.
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AS 990 Tahr RC: The Revolution in Steep Slope Mowing
Mowing Steep Slopes Just Got Easier – And Smarter
Professionals in landscaping, municipal maintenance, and environmental services know the challenge: mowing dense vegetation on extreme slopes is physically demanding, time-consuming, and dangerous. Traditional brushcutters and ride-on mowers quickly reach their limits. Turning after each pass reduces efficiency. Operator fatigue, mechanical strain, and safety concerns are constant factors.
That’s where the AS 990 Tahr RC steps in.
Engineered for maximum output and total control, this remote-controlled high grass mower with hydrostatic crawler tracks delivers high-performance cutting on slopes up to 56° (119%). Thanks to its open rotary mower deck and bi-directional cutting system, there’s no need to turn after each pass.
More Coverage. Less Turning. Maximum Efficiency.
The AS 990 Tahr RC was built with a clear purpose: maximise area output while reducing strain.
The bi-directional rotary deck, open on both sides, provides the same high-quality cut forward or reverse. No turning required after each row. Clippings are evenly distributed, promoting faster decomposition and protecting the soil.
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No turning at row ends = time saved
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Clean results even in grass over 1.5 m tall
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Symmetrical blade system: 2 pendulum blades + solid blade bar
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Cutting height adjustable via remote: 50–140 mm, 5 steps
The result: efficient mowing, consistent mulch distribution, and a visibly clean finish — even on semi-formal green areas.
Built the AS-Motor Way: Simple. Robust. Reliable.
Every detail of the AS 990 Tahr RC follows AS-Motor’s design philosophy: simple engineering, durable components, and maximum serviceability.
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Tubular steel frame with double 4-edge design
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Industrial-grade hydrostatic track drive
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Folding engine hood for full access
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Open machine layout for fast maintenance
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Track tension indicator integrated into the chassis
No over engineered electronics. No plastic gimmicks. Just a professional-grade machine, precision-built for real-world applications.
Watch the Tahr RC in action in our performance video. Explore its innovative features in the feature spotlight video.
Exceptional Performance on Every Slope
With a slope rating of up to 56°, the Tahr RC easily outperforms conventional ride-on mowers. The crawler tracks provide strong traction, stability, and low ground pressure of just 0.13 kg/cm², ideal for embankments, dykes, or water edges.
Cutting dense, tall vegetation becomes a one-person job — fast, effective, and safe.
Easy to Maintain. Easy to Transport.
Service access is quick and intuitive. The engine hood folds open, and the simple layout allows access to all key components. Long maintenance intervals reduce downtime:
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Engine oil every 80 hrs
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Hydrostatic oil: up to 400 hrs
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V-belts & blade system: easily accessible
At 482 kg and 152 × 131 cm footprint, the Tahr RC fits onto standard trailers and is easy to move between job sites.
The Making of the Tahr – Precision Built in Germany
Behind every AS-Motor product lies a development story rooted in practical needs. The Tahr RC was created in response to a clear challenge: increase productivity and safety on the steepest slopes. Developed and manufactured in Bühlertann, Germany, the Tahr RC brings together decades of field experience, mechanical insight, and customer feedback. From its early sketches to its first successful prototype test, the Tahr has been designed for the unique challenges professionals face daily. See how it came to life in our exclusive making-of video.
Operational Safety – Remote-Controlled Comfort
Stay away from flying debris, heat, steep terrain, or thorns — while keeping full control.
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300 m remote range with real-time status indicators
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Electromagnetic blade clutch
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Triple ejection protection (movable flaps + double curtain)
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Low noise exposure for the operator
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Comfortable, intuitive joystick control
Remote mowing enhances both operator safety and productivity — especially on difficult terrain.
Europe-Wide Support – Trusted Dealer Network
AS-Motor stands behind the Tahr RC with comprehensive support throughout Europe. Our well-established dealer network ensures professional service, fast spare parts availability, and expert guidance whenever it’s needed. With a two-year commercial warranty upon product registration and access to long-term parts support, your investment is protected and backed by decades of trust in the field.
Product details
Intuitive remote control
Reduced to the essentials and ultra-precise. With LED display of cutting heights, angles and status.
track tension indicator
See at a glance whether the belts are correctly tensioned. If necessary, simply retighten with a ratchet.
Cross blade system
Two pendulum blades cut the vegetation and an overlying blade bar recuts and clears the mowing deck. With stainless steel mulching baffle.
Delta crawler chassis
The asymmetrical crawler chassis ensures maximum wrap around the sprockets. Important to prevent the tracks from jumping off.
triple ejection projection
Movable flaps and a double curtain protect the surroundings from thrown objects.
Folding cover
The engine cover can be opened in seconds and brought into a vertical position for easy access to all units.
Direct service points
Tool-free, quick check of the oil level and air filter.
Lashing and lifting points
Solid lashing points and a central lifting point for safe loading, transport and servicing
Technical Data
Accessories
Bright LED headlights
Four optional LED headlights increase the visibility of the machine. Protected installation under the bonnet.

















