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.
Cobra RM53HST-PRO 21" Professional Petrol Rear Roller Lawnmower
Original price was: £1,839.00.£1,765.00Current price is: £1,765.00. inc. VAT
Cobra Fortis Sports Verticut Cartridge
Price range: £429.99 through £559.99 inc. VAT
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Cobra RM46SPH 18″ Petrol Rear Roller Lawnmower
Original price was: £497.99.£459.00Current price is: £459.00. inc. VAT
Powered by a reliable Honda engine, the Cobra RM46SPH is a self-propelled rear roller mower designed to create a beautiful, striped finish on medium-sized lawns with minimal effort.
In Stock
Description
Why buy the Cobra RM46SPH 18″ Petrol Rear Roller Lawnmower?
- Powered by a premium Honda GCVX145 145cc engine for reliability and performance.
- Self-propelled drive system takes the strain out of mowing, moving at a comfortable 3.4km/h.
- Full-width rear roller creates a traditional striped lawn finish and provides stability up to edges.
- Single lever height adjustment with 6 stages, from a low 17mm to 75mm.
- Large 55-litre grass bag with a handy ‘bag full’ indicator to reduce emptying stops.
- Durable 18″ (46cm) steel cutting deck for longevity.
Exceptional Performance with Honda Power
The Cobra RM46SPH combines impressive performance with elegant style, making it an excellent choice for homeowners seeking a pristine lawn. At its heart is the renowned Honda GCVX145 engine, a 145cc powerhouse known for its reliability, quiet operation, and easy starting. This engine ensures the mower has ample power to tackle varied grass conditions with ease.
Effortless Mowing with Self-Propelled Drive
Mowing is made comfortable and effortless thanks to the self-propelled drive system. The mower moves forward at a steady pace of 3.4km/h, removing the need to push the 38kg machine. This feature is particularly beneficial for medium-sized gardens or lawns with gentle slopes, reducing operator fatigue and making the task of lawn maintenance much more enjoyable.
Create the Perfect Striped Finish
A key feature of the RM46SPH is its full-width rear roller. This not only creates the classic, quintessentially British striped finish on your lawn but also provides excellent stability. The roller allows you to mow right up to the edges of flowerbeds and borders without the risk of the mower tipping, ensuring a neat and tidy cut across the entire lawn.
User-Friendly and Versatile
The Cobra RM46SPH is designed with the user in mind. The cutting height can be easily adjusted through 6 stages, from a low 17mm for a close cut to 75mm for longer grass, all controlled by a single, convenient lever. The mower features a robust 18″ (46cm) steel deck and a direct collection system that efficiently channels clippings into the large 55-litre fabric grass bag. To prevent overfilling and blockages, a grass bag full indicator lets you know exactly when it’s time to empty. For easy storage and transport, the handles feature a cam lock system for quick folding.
As an authorised UK dealer for Cobra, Sims Garden Machinery offers more than just a machine in a box. With over a century of experience, our trained sales staff at the Stratford-upon-Avon showroom can ensure this is the right mower for you. For local customers, every Cobra petrol lawnmower benefits from our free PDI (Pre-Delivery Inspection), ensuring it is fully built, tested, and ready to use. This service, performed by our trained mechanics, is complemented by local delivery and a handover demonstration, so you can buy with complete confidence. This commitment to after-sales support sets us apart from online-only retailers.
Not sure which machine or part is right for you?
Our team is here to help. Contact us today for expert advice.
Our team is here to help. Contact us today for expert advice.
Technical Specification
| Specification | Value |
|---|---|
| Engine | Honda GCVX145 |
| Displacement | 145cc |
| Drive | Self Propelled |
| Speed | 3.4km/h |
| Cutting Width | 46cm / 18″ |
| Cutting Height | 17 – 75mm / 6 Stages |
| Collection System | Direct |
| Grass Bag Capacity | 55L |
| Grass Bag Full Indicator | Yes |
| Folding Handles | Yes / Cam Lock |
| Deck Material | Steel |
| Rear Roller | Yes |
| Electric Start | No |
| Weight | 38kg |
| Domestic Warranty | 2 Years |
Why buy from Sims Garden Machinery?
Authorised main dealer
We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.
Real people, real support
No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.
Expert advice — not pushy sales
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how you’ll actually use the machine.
Established, independent family business
We’re a long-standing independent dealer with deep roots in the local area — built on reputation, repeat customers, and word of mouth.
Frequently Asked Questions
What size lawn is the Cobra RM46SPH suitable for?
With its 18″ (46cm) cutting width and self-propelled drive, the Cobra RM46SPH is ideally suited for medium-sized lawns. The rear roller makes it perfect for formal lawns where a striped finish is desired.
What are the benefits of the rear roller?
The primary benefit of the full-width rear roller is its ability to create a classic striped effect on the lawn. It also provides excellent stability, allowing you to mow right up to the edge of borders and flowerbeds without the mower tipping over, ensuring a cleaner, more professional finish.
How do I adjust the cutting height on this mower?
The cutting height is very easy to change. The mower features a single lever adjustment system that controls all four wheels simultaneously. You can choose from 6 different cutting heights, ranging from 17mm to 75mm, to suit the condition of your lawn.
Does this lawnmower arrive ready to use?
All petrol machinery purchased from Sims Garden Machinery for local delivery undergoes a free Pre-Delivery Inspection (PDI) by our trained mechanics. This means we build the machine, add oil and fuel, and test it to ensure it’s running perfectly. We then deliver it ready to use and provide a handover demonstration. This ensures you can start mowing with confidence straight away.
User Manuals / Downloads
Additional information
| Brand | Cobra |
|---|---|
| Collector SizeThe capacity of the grass collection bag or box in litres. | 55 |
| 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). | Steel |
| Drive TypeHow the mower is propelled (e.g., Push, Self-Propelled, Variable Speed). | Self-Propelled |
| Electric StartIndicates if the machine features a key or push-button electric starter. | FALSE |
| Mowing FunctionsAvailable mowing modes (e.g., Collection, Mulching, Side-Discharge). | [“Collection”] |
| Rear RollerIndicates if the mower features a rear roller for creating lawn stripes. | TRUE |
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- Each machine will be tested prior to delivery.
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