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COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)

COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
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COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
COBRA RM51SP80VX - 20" Twin 40V Li-ion rear roller lawnmower (KIT)
£665.00
£679.99
Ex Tax: £554.17
  • Model: RM51SP80VX
  • SKU: RM51SP80VX
  • MPN: CORM51SP80VX


With exceptional performance and style, the NEW Cobra R51SP80VX has evolved.

Create a flawless striped lawn with the new Cobra RM51SP80VX, it is powered by the new twin 40V MAX+ battery system and will effortlessly deliver a powerful performance each and every time. The new smart system allows the battery to recognise the Cobra tool it is being used in to automatically optimise output for peak efficiency; the MAX+ battery system will also run for longer, recharge faster and deliver higher performance in any tool within the MAX+ range.

The RM51SP80VX combines freedom with performance, built for effortless, efficient mowing each and every time. The 51cm / 20" steel cutting deck is an excellent choice for larger gardens and the 70ltr grass-bag means you will spend more time cutting and less time emptying your grass clippings. This model comes complete with a full-width rear roller to give a traditional striped finish to the lawn and to also make mowing right up the edge of flowerbeds and pathways much easier and quicker.

There are 6 height adjustment settings to choose from with a range from 17-75mm, allowing you to choose from a precise low cut or to raise the deck right up for tackling longer or more demanding grassed areas. This is easy to do from the single height-of-cut lever which is located on the side of the machine. This larger lawnmower is powered by 2 40V batteries and kit version comes with everything you will need to get up and mowing - two 40V 4Ah Li-ion MAX+ batteries and two quick charger MAX+, these are compatible with any of the other tools in the new range meaning you can transform and maintain your garden with ease. (*PLEASE NOTE* this mower and any item in the MAX+ range are not compatible with the standard 40V batteries).

Other handy features on the NEW RM51SP80VX include:

  • Edge cut grass system - The mower deck has been designed to be in-line with the front & rear wheels allowing you to cut right up to the edge of borders or against walls.
  • Comfort handles with angle adjustment - 3 handle angle adjustments allow for easy adjustment to suit multiple users.
  • Self-propelled drive - Giving you extra power and making cutting your lawn much easier and quicker, it allows you to confidently navigate uneven and sloping terrain.


Cobra Garden Machinery was launched in 2013 and is supported by Henton & Chattell Ltd, providing over 85 years worth of experience in the Garden Machinery Industry.

The Cobra Garden range is consistently expanding and now consists of over 150 products to cover both domestic and professional requirements. Cobra incorporates a comprehensive range of petrol, mains electric and battery lawnmowers, handheld machinery and lawncare products. Read more...

To help you decide which mower would be best for you, it's really useful to know how big your lawn is!  One of our suppliers, Husqvarna, have a great tool that makes use of satellite mapping so that you can draw around your garden to get a lawn size measurement.  Although the tool was originally designed to help choose which of their Automowers would best suit your garden, it can equally well be used to establish the size of your garden when choosing a walk behind mower.  

If you would like some personal advice then please do give us a call on 01489 575242 option 2 for the sales department.

Note regarding Stihl machinery only

Currently Stihl machinery is only available to collect in store. All other Stihl products including accessories, parts and forestry equipment are available for delivery.  For more information click here...

Delivery by carrier

For most purchases of £120 inc VAT and over, we offer FREE delivery via carrier to UK mainland except for the Highlands and islands (priced separately by postcode).  However, we only deliver ride-on mowers locally and use our own vehicles to do this, see below.

PLEASE NOTE - We are unable to offer delivery to Northern Ireland for many of our machines and accessories; we may have to cancel and refund your order if we are unable to complete this for you. 

For purchases of less than £120 inc VAT, there is a small charge of £6 inc VAT

Aspen fuel deliveries will incur an £18 inc VAT delivery surcharge. 

Westermann brush deliveries will incur a £36 inc VAT delivery surcharge.

We will contact you if any other charge might apply based on location or product.

Our delivery service is operated by contracted carriers. 

Larger boxed items would normally be delivered to you the next working day after shipping. This is a very reliable service and whilst most customers receive their goods the next working day it is not absolutely guaranteed as carriers can have logistical problems. 

Smaller items that are shipped in packets for instance, will be posted and should arrive in 2-3 days.  If you need these items sooner, please call us and we will endeavour to help where possible.

Please note that delivery can be anytime between 8am and 6pm Monday-Friday. If you need your delivery to be made in a specific time slot, please call us to discuss the options available. 

Next working day delivery is subject to the goods being in stock at our warehouse.  Please call us to check availability if it is an urgent order.


Call us on: 01489 575242 option 2 for the sales department


Local deliveries using our own vehicles

Delivery of some products (mainly garden tractors and attachments) is limited to the local area as indicated by the list of postcodes below. Delivery is direct from our store in Swanwick using our own vehicles. One of our sales staff will personally contact you and arrange a convenient time to deliver your purchase.  

Delivery is made free to most of the Hampshire, West Sussex, East Dorset and South Wiltshire region as per the postcodes below:

BH5, BH6, BH7, BH8, BH22, BH23, BH24, BH25 & BH31

GU26, GU27, GU29, GU30, GU31, GU32, GU33, GU34 & GU35

PO1, PO2, PO4, PO5, PO6, PO7, PO8, PO9, PO10, PO11, PO12, PO13, PO14, PO15, PO16, PO17, PO18, PO19, PO20, PO21, PO22

RG22, RG23, RG25 & RG28

SO14, SO15, SO16, SO17, SO18, SO19, SO20, SO21, SO22, SO23, SO24, SO30, SO31, SO32, SO40, SO41, SO42, SO43, SO45, SO50, SO51, SO52 & SO53

SP1, SP6, SP10 & SP11

Timing of your delivery

If the timing of your delivery is important to you, please check availability of goods before ordering, as if we have to order from our suppliers, then these delivery times will be longer.

  • Drive type: Self propelled
  • Cutting width: 51cm / 20"
  • Cutting height: 17 - 75mm (7 adjustments)
  • Grass bag capacity: 70ltr
  • Speed: 3.2km/h
  • Run time: Up to 45 minutes
  • Weight: 35kg
  • Warranty: 2 years 
  • Includes 2 x 40V 4Ah Li-ion Batteries x 2 Quick Charger Max+ 
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