STIHL RM 4 RTP Petrol Mulching Lawn Mower – 53 cm / 21″ Cut-Width

Professional-grade self-propelled petrol mulching mower designed for large lawns and demanding use.
The STIHL RM 4 RTP is engineered for serious lawn care – with a 53 cm (21″) cutting width, high-performance engine and mulching capability so grass clippings are finely shredded and returned to the turf as natural fertiliser. Ideal for large domestic gardens, estates or demanding outdoor spaces.

Key Features & Benefits

• 53 cm / 21″ cutting width: Covers large areas efficiently. 
• Mulching blade and function: Shreds grass into fine particles to act as natural fertiliser. 
• Self-propelled drive system: Makes mowing large areas or slopes easier and less tiring. 
• Aluminium deck & heavy-duty build: Designed for durability with components like large wheels, aluminium rims and reinforced construction. 
• Cut height range 30-70 mm: Versatile for lawn maintenance to longer lengths. 
• Ideal for areas up to ~2,500 m²: Suitable for large gardens or estates. 
• 5-year domestic warranty (when registered): Gives long-term peace of mind (subject to registration & servicing). 

Technical Specifications

Why Choose the RM 4 RTP?

When you’re looking for a high-spec petrol mulching mower that will handle large gardens, frequent use or estate-type settings, the RM 4 RTP stands out. With its large cut width, self-drive, premium build and mulching capability, it’s engineered to deliver a professional finish and long service life. Choose this model if you want serious performance and durability rather than basic lawn care.