Cobra RM46SPBR Self-Propelled Rear Roller Petrol Lawn Mower
RRP: £430.00
OUR PRICE: £399.99 (inc VAT)
Included Free With This Machine All the Bits to get you Started WORTH over £20
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With exceptional performance and style, the Cobra RM46SPBR petrol lawn mower is powered by a 140cc Briggs & Stratton 575 Series engine for the best-in-class performance. With Ready Start recoil start, It incorporates the latest engine design technology ensuring optimal torque and efficiency, resulting in lower emissions.

The RM46SPBR features a self-propelled drive system for added comfort and ease of operator use on slopes and when tackling longer grass. It also features a rear roller for a traditional striped finish. The full width roller supports the lawn mower when the front wheels are in line with the border edge, allowing you to mow right up to the edge of flowerbeds and borders.

The robust steel deck has a 46cm (18") cutting width. The height of cut can be adjusted centrally through six positions from 17mm to 75mm.

The Cobra RM46SPBR is equipped with a 55 litre fabric grass bag, ideal for collecting large amounts of grass clippings before the need for emptying. This fabric enables a strong free flow of air which results in an even more compact and comprehensive grass collection on this lawn mower.

Expertly designed in the UK to cater specifically for the changing conditions of the British lawn, the Cobra RM46SPBR is suitable for gardens up to 600 square metres and is backed by a two year domestic warranty.

Product specification

Brand: Cobra
Engine: Briggs & Stratton
Engine Model: 575EX Series
Displacement: 140cc
Starting Method: Recoil Start
Throttle Control: Yes
Propulsion: Self-propelled single speed
Fuel Tank Capacity: 0.8L
Cutter Deck: Steel
Width of Cut: 46cm
Minimum Cutting Height: 17mm
Maximum Cutting Height: 75mm
Cutting Height Adjustment: Central, 6 stages
Collection System: Direct collection
Grass Collector: Fabric grass bag with hard top
Collector Capacity: 55L
Mulch Capable: No
Wheels - Front: 7"
Rear Roller: Full width
Weight: 32kg
Warranty: 2 years

Briggs & Stratton 575EX Series engine, expertly powering Cobra lawn mowers

The 575EX engine provides the best-in-class performance in this category of engines. It incorporates the latest engine design technologies ensuring optimal torque and efficiency, resulting in lower emissions.


Full width rear roller

The rear roller series of petrol lawn mowers from Cobra all come equipped with a full width rear roller to help produce a traditional striped finish.

The machine also gives you the ability to mow right up to the edge of flowerbeds and borders. The rear roller supports the lawn mower when the front wheels are in line with the border edge.


A closer cut

Cobra rear roller lawn mowers cut down to 17mm.


Single lever 6 stage height of cut adjustment

With a fully adjustable six cutting heights ranging from 17mm for a superb low finish, up to 75mm for tackling longer grass. All this is achieved by simply using the single lever height of cut adjustment level which has been conveniently positioned next to the rear roller.

Large capacity grass bag will full indicator

A capacious 55 litre fabric grass bag allows collection of large amounts of grass clippings before the need to empty.

The grass bag is made from a robust, high quality fabric. This fabric enables a strong free flow of air which means that grass collection on this machine is even more compact and comprehensive.


Two year warranty

Cobra petrol rear roller lawn mowers are backed by a two year manufacturer's warranty.



Cobra banner lawnmower

Cobra Garden - The Most Comprehensive Range of Garden Machinery in the UK

Cobra Garden Machinery was launched in 2013 and is supported by Henton & Chattell Ltd, giving Cobra Garden the benefit of over 85 years experience in the garden machinery and horticultural Industry.

The Cobra Garden range is constantly expanding and now consists of over 130 products to cover both your domestic and professional requirements. Cobra incorporates a comprehensive range of petrol, electric and cordless lawn mowers, hand-held machines and lawn care products. Cobra Garden products are available across the UK throughout a network of approved specialist dealers. As a Cobra Garden approved dealer, The Green Reaper has the knowledge and experience to help you purchase the correct Cobra Garden product for your requirements. We will also provide expert after-sales assistance if needed.

Cobra Garden’s philosophy is to remain true to its trusted values of innovation, quality, reliability, value and customer service. Cobra Garden works hard to ensure that the products and services on offer continue to be relevant to its customers.


View Cobra brochure

Add review
5 Star Rating
May 28 2020
Stuart McFadyen
I needed to change from a four wheel mower to a rear roller mower and Cobra has more than exceeded my expectations in use and value for money compared to other manufacturers. Ordered on a Sunday and delivered the following Tuesday was exceptional service from The Green Reaper considering the current covid19 conditions.
May 24 2020
May 23 2020
Mr M Osborne-Crone
Lots of time reviewing various mowers before spending the money on the Cobra. It's just perfect for my garden and I wish I'd bought one years ago. Very pleased with the quality. The Green Reaper service was outstanding - it arrived inside 24hrs of ordering and I can't rate them highly enough. A very happy customer.
Jun 10 2016
Dominic Neal
The Cobra is a very solid machine, I thought there wouldn't be enough weight to push the roller down to created the desired stripes but its a good sturdy and weighty back end on the roller. So far just had two cuts with the Cobra and both gave excellent results. I think the value for money is great in comparison to Hayter and Atco etc and although I've not tried the Hayter or Atco similar machines I can't imagine much difference at this size mower, perhaps the slip diff' rollers that are sported on more expensive machines would be useful but thats about it. I picked this particular model for the engine type which is powerful and also sports good economy along with low emissions, I'm sure the other models in this 46" roller range perform just as well.