Protect your trailer with the Bulldog KN Knott Hitch Lock, a heavy-duty security device designed specifically for Knott K35 and K27 hitch heads.
 
Manufactured from 4mm thick steel, the Bulldog KN encloses the hitch head and its fixings to help prevent tampering and unauthorised towing.
 
It can be used while your trailer is hitched, unhitched or secured with a compatible Bulldog Lock Post, making it a practical security solution for storage, touring and everyday trailer use.
 
With Sold Secure Gold approval, Secured by Design recognition and insurance approval, the Bulldog KN provides robust, British-made protection for compatible Knott trailer hitches.
 
Designed for Knott K35 & K27 Hitch Heads
The Bulldog KN is specifically designed for:
Knott K35 hitch heads
Knott K27 hitch heads
Compatible trailers fitted with these hitch types
 
Its close-fitting design surrounds the hitch head and fixings, helping restrict access to important components while the lock is fitted.
 
Always check your hitch model before ordering to confirm compatibility.
 
Hitched or Unhitched Security
The Bulldog KN provides flexible trailer protection and can be used:
While the trailer is hitched
While the trailer is unhitched
With a compatible Bulldog Lock Post
 
This allows you to keep your trailer protected in a variety of situations, whether it's attached to your towing vehicle, parked at home or placed into storage.
 
Heavy-Duty 4mm Steel Construction
The Bulldog KN features a 4mm thick steel bottom channel that encloses the hitch head and its fixings.
 
This creates a strong physical barrier around the coupling, while the highly visible red powder-coated finish acts as an obvious theft deterrent.
 
High-Security Lock
A drill and pick-resistant high-security locking mechanism helps protect the Bulldog KN against common methods of attack.
Combined with its heavy-duty steel construction, the locking system provides strong protection for compatible Knott K35 and K27 trailer hitches.
 
Dummy Ring Protection
The Bulldog KN incorporates a dummy ring that restricts access to the towing point while the trailer is unhitched.
 
This helps prevent an unauthorised vehicle from connecting to the trailer and towing it away.
 
Key Features
Designed for Knott K35 hitch heads
Designed for Knott K27 hitch heads
Suitable for compatible trailers
Can be used while hitched or unhitched
Compatible with a Bulldog Lock Post
Heavy-duty 4mm steel bottom channel
Encloses the hitch head and fixings
Drill and pick-resistant high-security lock
Dummy ring restricts towing point access
Highly visible red powder-coated finish
Compact and easy to store
Quick and straightforward to fit
Sold Secure Gold approved
Secured by Design recognised
Insurance approved
Made in Great Britain
 
Approved Trailer Security
The Bulldog KN carries several recognised security approvals:
Sold Secure Gold
Secured by Design
Insurance Approved
These approvals make the KN a strong security option for trailers fitted with compatible Knott K35 or K27 hitch heads.
 
Keyed-Alike Option
If you would like your Bulldog KN keyed alike to a compatible existing Bulldog security product, there is an additional charge of £2.49.
 
Please email your current key code to info@driveawaylocksmith.co.uk after purchase so compatibility can be confirmed.