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Full motorcycle compatibility list for this product
Product family
Guardian
Product type
Permanently mounted motorcycle lock
Lock type
Brake caliper mounted disc lock
Mounting type
Permanent
Mounting side
Right
Brake caliper type
Radial
Caliper bolt spacing
100 mm
Locking method
Removable spring-loaded LockPin
Wheel immobilisation
Yes
Audible lock confirmation
Yes – CLICK
Security certification
ART4
ART approval number
4362
LockPin weight
77 g
Number of keys
2
Security Card included
Yes
Dust protection
DustPlug + DustCap
Spacer kit included
Yes
Mounting bolts included
Yes
Warranty
Lifetime Limited Warranty
Remains installed while riding
Yes
Separate lock storage required
No
Locks through brake disc
Yes
Requires removal before riding
LockPin only
Suitable for centre stand use
Yes
Installation location
Front brake caliper
Installation required
Yes
Bennetts BikeSocial Recommended
https://www.bennetts.co.uk/bikesocial/reviews/products/security/motorcycle-chains-and-locks/lock-works-guardian-review-disc-lock

Lock Works Guardian GR100 Black

Motorcycle security should be effortless. No loose locks, no hassle, no risk of damage. Just get off your bike, lock it in seconds, and walk away with confidence. That is exactly what the Lock Works Guardian is built for: premium, integrated security that fits seamlessly into your daily riding routine.

The Guardian GR100 is engineered specifically for motorcycles with radial brake calipers and a 100 mm bolt spacing on the right side. It mounts directly to your caliper and stays there permanently, always ready when you need it.

Using a system of precisely machined spacers, the Guardian is adjusted to your specific setup. This ensures a perfect, play-free fit and controlled engagement with the brake disc, without placing stress on critical components.

The GR100 is most commonly used on European motorcycles such as BMW, Ducati, KTM and Triumph, where 100 mm radial calipers are standard. It is designed to match both the engineering and aesthetics of modern superbikes, naked bikes and adventure models.

Finished in matte black, the Guardian integrates cleanly with your motorcycle, delivering a subtle, premium look while providing a fast and reliable way to immobilise your front wheel.

What's in the box

  • Lock Works Guardian, anodized black
  • LockPin
  • 2 keys
  • Security Card
  • Mounting bolts, stainless steel
    • M10x80x1.25
    • M10x90x1.25
    • M10x90x1.5 for BMW / Harley-Davidson
  • Spacer set, anodized black
  • DustPlug with Dustcap
  • Installation manual
  • UK delivery by abba Motorcycle Equipment
    Local shipping and invoicing through our partner. Local taxes are already included in the price.
  • Availability: In Stock
  • £ 219.99

  • For motorcycles with radial front brake calipers.
  • Bolt spacing: 100 mm centre-to-centre.
  • Mounting position: right brake caliper (GR100).
  • Always check compatibility using the Guardian Fit-Finder before ordering.
Available colours


  • ART 4362
  • Sold Secure Diamond
  • Bennetts BikeSocial Tested - Recommended

What the press says

Bennetts BikeSocial: Lock Works Guardian review | Motorcycle disc-lock tested

Bennetts BikeSocial ·

Lock Works Guardian review | Motorcycle disc-lock tested

The most effective style of disc-lock I’ve tested.

Read the review
Motor.nl: Practical test: Lock Works Guardian

Motor.nl ·

Practical test: Lock Works Guardian

The Lock Works Guardian is a great solution: quick, secure and, above all, easy to use.

Read the review (language: NL)