Hardened Steel Shackles
Shackles range from 13 mm to 16.8 mm for maximum resistance.
Bike locks
/ ONGUARD
7.5
ONGUARD Bike locks
This collection features high-security U-locks and folding plate locks constructed from hardened steel. These tools offer professional-grade protection for e-bikes and bicycles in high-risk environments
Hardened steel locks
Heavy duty U-locks
Keyed
Flexible cable locks
Combination
6ft long
Heavy duty
12mm thick
High security
4ft long
With mounting brackets
10mm thick
Heavy duty chain locks
14mm thick
4-digit combination locks
Compact folding locks
16mm thick
Lightweight
U-locks with security cables
For electric bikes
Our pick
Worth noticing
Advanced Locking Mechanisms
X4P Quad Lock and X2P Double Bolt systems secure the crossbar.
Integrated Mounting
Most models include a bracket for convenient on-bike transport.
Why this brand is here
Precision Security Engineering
The lineup centers on the Brute, Pitbull, and Bulldog series, utilizing Z-Cylinder cores and hardened steel. These models incorporate rubberized coatings to protect frame finishes during use.
- X4P Quad Lock mechanism
- 16.8 mm hardened steel shackles
- Z-Cylinder core technology
- Folding hardened steel plates
- LED-equipped laser-cut keys
- Rubber-coated finish protection
Why these models
What we make
15 locks listed here, grouped as Keyed bike locks, Hardened steel locks, Locks with mounting brackets, Heavy duty U-locks.
How they are built
Titles in this ONGUARD set call out the build that shows up in Standard Hardened Steel U-Lock with Mounting Bracket; Hardened Steel Hex Link Chain with Integrated Lock; Hardened Steel U-Lock with Four Foot Extension Cable.
Who they are for
The range is aimed at the uses named in Keyed bike locks, Hardened steel locks, Locks with mounting brackets, Heavy duty U-locks, not a catch-all.
The difference
Compare ONGUARD models on Keyed bike locks, Hardened steel locks, Locks with mounting brackets, Heavy duty U-locks. Examples: Standard Hardened Steel U-Lock with Mounting Bracket; Hardened Steel Hex Link Chain with Integrated Lock; Hardened Steel U-Lock with Four Foot Extension Cable.
On this hub
ONGUARD in this catalog
Heavy duty U-locks
7 of 12 listed
Flexible cable locks
6 of 12 listed
- 15 of 15 list weight · around 1.13 kg
- 15 of 15 list length · around 11 cm
- 15 of 15 list across · around 14.7 cm
- 15 of 15 list height · around 21.2 cm
Current set
Listed here: 15 locks
Also in Hardened steel locks Heavy duty U-locks
9.4
9.3
9.3
9.1
9.1
9.1
9.0
9.0
7.5
6.6
6.3
6.3
The gist
How it lands
42 reviews behind this list
Why it lands
- Heavy duty security 7
- Sturdy hardened steel 7
- Theft deterrence 6
- Heavy weight 5
- Secure locking performance 5
- Good value 4
- Good value for price 4
- Included mounting bracket 4
- Included cable 3
- Frame mount bracket 2
Why it slips
- Heavy weight 8
- Frame mount bracket 3
- Included cable 2
- Good value 1
- Good value for price 1
- Included mounting bracket 1
Voices
From this set
The 16.8 mm shackle on the Brute STD feels incredibly solid on my e-bike.
I appreciate the LED key on the Pitbull DT when locking up at night.
The K9 folding plate lock fits perfectly in its mount bracket while I ride.
Close labels
Brands like ONGUARD
8.1
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7.8
ABUS
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Via Velo
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8.8
Master Lock
same Flexible cable locks — 54% less weight
Sportneer
same Heavy duty U-locks — 28% less weight
8.5
Titanker
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Common questions
ONGUARD Questions
What is the thickest shackle available?
The Brute STD U-Lock features a 16.8 mm hardened steel shackle.
Do these locks come with mounting hardware?
Yes, models like the Bulldog and Pitbull include a mount bracket.
How many keys are provided?
Most models include 5 laser-cut keys, including one with an LED.
What is a Link Plate Lock?
The K9 is a folding lock made of hardened steel plates.