Highline 51.8 SP-A Self Propelled Petrol Lawnmower


Chic and comfortable, this is how the Highline 51.8 SP-A from AL-KO presents itself. Developed in Germany and manufactured in Austria, this lawn mower offers the highest quality. The modern design makes it an eye-catcher in every garden. Quality components and materials increase the longevity of the petrol lawnmower. Mowing the lawn is a pleasure with the “Highline” lawnmowers.

SKU: AL-KO Highline 51.8 SP-A Categories: , Tags: , ,


With a cutting width of 51 cm, the Highline 51.8 SP-A petrol lawn mower ensures quick progress even in large gardens (up to 1800 m²). The cutting height adjustment is carried out centrally in 7 stages from 30 mm to 80 mm. The 2.1 kW AL-KO Pro engine with overhead valves offers excellent efficiency, resulting in more power and less fuel consumption. Thanks to the wheel drive and the XXL lightweight wheels, it’s easy to move the mower around the garden. The 4INONEfunction offers mowing, collecting, mulching and side discharge of the grass. The ergonomically shaped handlebar increases comfort while working. The grass clippings pass through the extra-high steel sheet mowing deck with MaxAirflow technology to the rear of the 70-litre collector with level indicator, filling it up to the top meaning the grass box needs emptying less frequently.

  • Single Speed Wheel Drive
  • Large cutting width for efficient working
  • Ergonomically shaped handle bar
  • XXL wheels for easy pushing
  • Comfortable and simple cutting height adjustment

High degree of innovation and a modern design. These are key features of our “Highline” petrol lawnmowers, making us the ideal partner for your lawn care.

Additional information

Box Volume in Litres


Cutter Deck

Steel Plate

Cutting Height

30-80 mm

Cutting Height Adjustment

Central, 7-stage

Cutting Width in cm


Displacement in cc


Electric Start


For Lawns (in m²)



Catching, Mowing, Mulchmowing, Side discharge


AL-KO Pro 145 QSS

Operating Type


Power kW





5 Year Domestic*

Weight in kg approx


Wheel Drive Type

1 gear

Wheels, Front / Rear

200 / 280 mm

Wheels with Ball Bearings