OnGuard Bulldog Mini LS lock review

Exceptional value security

BikeRadar score4/5

Mini U-locks are popular as they’re easy to carry. They’re also difficult to lever (a small shackle’s easy to fill), but the width can be a little limiting so you'll need to use a secondary cable. 

The Bulldog Mini LS is better than most because the shackle is narrow (90mm rather than the usual 115mm) but still a usable length.

Fitted correctly, the Bulldog is difficult to attack and once we’d got a leverage point we found it tough to break it. Hammering and chiselling were well resisted and after five minutes it was still operable. 

Our power-assisted tool shot through one side of the shackle in under 20 seconds, allowing us to pry open the lock. The lock is backed with a £500 anti-theft guarantee and is great value for money. 

Warren Rossiter

Senior Technical Editor
Approaching two decades of testing bikes, Warren can be found on a daily basis riding and exploring the road and off roads of Wiltshire's Salisbury Plain in the UK. That's when he's not travelling the world to test the latest kit, components and bikes.
  • Age: 44
  • Height: 188cm / 6'2''
  • Weight: 92kg / 203lb
  • Waist: 86cm / 34in
  • Chest: 112cm / 44in
  • Discipline: Road
  • Preferred Terrain: Big, fast descents and rough surfaces like cobbles or strada bianca
  • Current Bikes: Decade Tripster ATR, Dedacciai Temarario, Cannondale Synapse, BMC Granfondo Disc Di2, Genesis Day One CX, Parlee Z Zero Custom, Storck Scenario Comp Custom, DMR Trailstar, Bianchi Pista, Cube SUV 29er e-bike
  • Dream Bike: Bianchi Oltre Disc, Bianchi Specialissima, Cannondale Slate, Buffalo Bike
  • Beer of Choice: Brew Dog Punk IPA
  • Location: Wiltshire, UK

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