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The Ultimate Protection

The Ultimate Protection

Give your family the protection they deserve

The Ultimate Security

The Ultimate Security

ABS Ultimate Locking Cylinder

high security keys

high security keys

The best security for your home

The UK's most secure doors

The UK's most secure doors

3* High Security Lock Cylinder

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secured by design


The ABS Ultimate cylinder (also known as the ABS Master Cylinder) is the most state-of-the-art way to protect your home. Endurance composite doors are fitted with these advanced locking mechanisms. We’re so confident in its features that in the unlikely event it should fail, you’ll benefit from the £2000 Security Guarantee. Activate yours today.

abs ultimate cylinder

These locking mechanisms are precision-engineered to respond when they come under attack from potential intruders, activating their measures to keep your property and your loved ones safe. Invest in the most solid and secure composite doors from Endurance.



Our composite doors come equipped with the ABS Ultimate / Master cylinder to give you total peace of mind. This high-security locking system meets the requirements of the British Kitemark, TS007 3* and Solid Secure Diamond testing criteria. Additionally, it is accredited with Secured by Design (SBD) approval as part of the Police Crime Preventions Initiative.

secured by design 3 star
high security lock cylinder


The ABS Ultimate cylinder is specifically designed to combat and resist all known methods of attack on a euro cylinder, so any potential intruders will be kept at bay. Even after forced entry attempts, they will remain secure and in most cases will still be operable from the inside. Our cutting-edge composite door security solutions are designed with you and your safety in mind.

abs 3* cylinder
endurance ultimate cylinder


If your composite door is attacked, ABS triggers its intelligent systems. This activates a hidden lock inside its solid Molybdenum core to ensure your door stays completely secure. Our composite door locking mechanisms are carefully designed and refined to keep you and your loved ones safe. It is this precision-engineered functionality that has earned the ABS cylinder its impressive approval from Kitemark, Sold Secure Diamond Grade and SBD. You can be sure that our high-security composite doors will keep your property safe and sound.


The ABS Ultimate cylinder features no snap lines to maximise its resistance if it is attacked from the outside. This means it will still be operable from the inside with the key. Our composite door locking mechanisms are carefully created to ensure maximum security and functionality. When the ABS resists an intruder, you shouldn’t have to suffer any inconvenience. The ABS cylinder, will always work and perform highly for you.


Commonly seen methods of forced entry that our secure composite doors are able to resist include picking, drilling and bumping. The ABS Ultimate cylinder is designed to resist these and stop potential intruders in their tracks.

To maximise this aspect of security, the ABS cylinder includes hardened anti-drill pins throughout its body and plug. Its anti-pick and anti-bump pins enable multi-zone pick and bump key protection. This means you’ll be able to relax in your home, safe in the knowledge that your new composite door will keep you safe and sound.

UK's Highest Door Security


Watch this video to see how easy it is to gain access into even the most secure doors. One of the smallest and overlooked components of your door is responsible for the entire security that your door provides. Luckily for you, we upgrade your door FREE OF CHARGE to the ABS Ultimate Cylinder!

What our customers say
distinction doors barry

Kathryn, Cardiff

I found Rob to be professional and trustworthy and a fantastic communicator. He provided brilliant support from start to finish during the project he assisted me with. He also offered me a product which far exceeded my expectations. I am so happy with my 'stable' door' it fits the bill exactly! Rob kept in touch every step of the way and order to installation only took about a fortnight. Thanks Rob and your team for a VERY satisfied customer who would recommend you anytime.

composite doors barry

Garry, Penarth

Rob is a very knowledgeable, professional and very trustworthy person, I too own my own businesses and know the value of customer trust and recommendations. I would have no problem recommending this company to anyone.

composite doors vale of glamorgan

Matthew & Sue, Brecon

We have small children so wanted the to make sure our family home was safe and secure. Rob gave expert advice and actually advised us against spending more than we were going to. Not only have we saved money, but we also have an attractive & secure home as well!

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