Best ONGUARD Cycling U-Locks of 2025

Luke Dobson Avatar
Luke Dobson
Last Updated: 10 Feb 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

If you're a cyclist who values security and peace of mind, you might want to consider investing in a high-quality U-lock for your bike. One brand that stands out in this category is ONGUARD. Their cycling U-locks are designed to provide reliable protection against theft and to help you feel confident leaving your bike unattended. With a range of sizes and styles to choose from, ONGUARD's U-locks offer a variety of features such as hardened steel shackles, pick-resistant locking mechanisms, and dust covers to keep dirt and debris out of the keyhole.

At a Glance: Our Top Picks

ONGUARD Pitbull DT Lock with Cable Cover #TOP 1
ONGUARD Pitbull DT Lock with Cable
ftb score rating icon 9.8
OnGuard Brute LS-8000 High Security Bike Lock Cover #TOP 2
OnGuard Brute LS-8000 High Security Bike Lock
ftb score rating icon 9.7
ONGUARD Pitbull LS 8002 U-Lock for Cycling Cover #TOP 3
ONGUARD Pitbull LS 8002 U-Lock for Cycling
ftb score rating icon 9.5

Top 10 ONGUARD Cycling U-Locks

#TOP 1

ONGUARD Pitbull DT Lock with Cable

8005
Black
11.5x23.0 cm
ONGUARD Pitbull DT Lock with Cable Cover
ONGUARD Pitbull DT flexion slot, black, 115 mm x 230 mm x 14 mm + 120 cm x 10 mm

The ONGUARD Pitbull DT Lock offers robust security for your cycling needs. With its X4P Quattro bolt locking mechanism, you can feel confident knowing that the shackle is locked on four sides, providing enhanced protection. The hefty 14 mm hardened steel shackle, combined with a 120 cm x 10 mm cable, resists cutting attempts, ensuring your bike remains safe. Additionally, the co-molded crossbar cover and double rubber coated shackle protect your bike's finish from scratches, giving you peace of mind during use.

What We Like
Highly secure locking mechanism
Durable hardened steel shackle
Protects bike finishes
Includes multiple laser cut keys
#TOP 2

OnGuard Brute LS-8000 High Security Bike Lock

2235500000
Black
11.5x26.0 cm
OnGuard Brute LS-8000 High Security Bike Lock Cover
OnGuard Brute LS-8000 Keyed Shackle Bike Lock, Keyed Shackle Bike Locks, High Security & Reliable, Bicycle Lock With Co-Moulded Crossbar, Locks Shackle On Four Sides, Hardened Steel Cycle Lock, D Lock

The OnGuard Brute LS-8000 Lock offers exceptional security for your bicycle. With its tough 16.8mm hardened steel shackle, you can feel confident that your bike is well protected against cutting and prying. The lock comes with five laser cut keys, providing you with reliable access while deterring potential thieves. Its user-friendly design features an innovative Snap Lock mounting bracket, making it easy to attach and remove without hassle. Additionally, the weather-resistant materials ensure that your lock stays in great condition, even in challenging outdoor conditions.

What We Like
High security against theft
User-friendly mounting system
Weather-resistant materials
Durable hardened steel shackle
Includes five laser cut keys
#TOP 3

ONGUARD Pitbull LS 8002 U-Lock for Cycling

8002
Gold
ONGUARD Pitbull LS 8002 U-Lock for Cycling Cover
ONGUARD Pitbull LS 8002 Long Shackle Bike U-Lock (Sold Secure Gold)

The ONGUARD Pitbull U-Lock offers superior protection, making it ideal for medium to high crime areas. Its X4P Quattro Locking Mechanism ensures four-sided security, giving you confidence that your bike is safe. The hefty 14mm hardened steel TriRadius shackle is designed to resist cutting, prying, and jacking, so you can lock up without worry. Additionally, the Snap Lock Quick Release multi-position mounting bracket allows for easy attachment to your bike, providing convenience on the go.

What We Like
High security for urban areas
Four-sided locking mechanism
Resistant to cutting and prying
Easy to mount and detach
#TOP 4

ONGUARD 45008006M Pitbull Bicycle Lock with Keys

45008006M
Black
3.55 x 6.90 - Inch
ONGUARD 45008006M Pitbull Bicycle Lock with Keys Cover
ONGUARD 45008006M Pitbull Bicycle Lock, Black, 3.55 x 6.90-Inch

The ONGUARD Pitbull Lock provides superior security for your bicycle. Its X4P Quattro Bolt Locking Mechanism secures the shackle at four points, ensuring maximum protection against theft. The hefty 14mm thick hardened steel shackle is designed to resist cutting, prying, and jacking, giving you peace of mind when leaving your bike unattended. Additionally, the bump-proof Z-Cylinder enhances protection against tampering, while the TriRadius shackle offers versatile locking options to suit your needs. With these features, you can enjoy cycling without worrying about the safety of your bike.

What We Like
Maximum security features
Durable steel construction
Bump-proof cylinder
Versatile locking options
Includes multiple keys
#TOP 5

OnGuard Bulldog LS High Security Bike Lock

8009
Black
4.53 x 11.50 - Inch
OnGuard Bulldog LS High Security Bike Lock Cover
OnGuard Bulldog LS Bike / Cycle D U Keyed Lock 115mm x 292mm Black/Yellow

The OnGuard Bulldog LS Lock offers excellent security for your bicycle. Its X2P Double Bolt Locking Mechanism secures the shackle on both sides, ensuring it is firmly locked in place. The extended shackle gives you greater flexibility in where you can lock your bike, accommodating various structures. With an 11-13mm hardened steel shackle, this lock is tough against cutting and prying, providing peace of mind. Additionally, the advanced Z-Cylinder design is bump-proof, making it extremely resistant to picking and drilling attempts.

What We Like
Superior double bolt locking
Flexibility with extended shackle
Highly resistant to cutting
Bump-proof cylinder for security
#TOP 6

Onguard Bulldog Combo Shackle Lock DT-8012C

8010C
Black
11.5 x 23.0 cm
Onguard Bulldog Combo Shackle Lock DT-8012C Cover
Onguard Bulldog Combo DT-8012C Combo Shackle Lock, Black, 11.5 x 23.0 cm

The Onguard Bulldog Combo Lock offers robust security for your bicycle. Its X2P Double Bolt Locking Mechanism locks the shackle on both sides, providing enhanced protection against theft. The user-settable Click-Combo-Gear System features 10,000 possible variations, allowing you to choose a unique code that suits you. With a hefty 13mm hardened steel shackle, this lock resists cutting, prying, and jacking, ensuring your bike remains safe. Additionally, the new double rubber coated crossbar cover protects the paint and finishes, preserving your bike's appearance.

What We Like
Strong double bolt locking
Customisable combination codes
Resistant to cutting and prying
Protects bike finishes
#TOP 7

ONGUARD Pitbull STD 8003 Secure Bike Lock

Pitbull STD
Gold
ONGUARD Pitbull STD 8003 Secure Bike Lock Cover
ONGUARD Pitbull STD 8003 Bike U Lock - Sold Secure Gold

The ONGUARD Pitbull STD Lock is designed for optimal bicycle security, particularly in high crime areas. It features a Gold level Sold Secure rating, ensuring it meets the highest standards for protection. The lock boasts a hardened steel shackle measuring 115mm x 230mm x 14mm, providing robust resistance against theft. Additionally, the patented deadbolt locking mechanism enhances holding power, giving you peace of mind when locking your bike. With a 360-degree mounting system, you can easily attach it to your bike for convenient transport.

What We Like
High security rating
Hardened steel construction
Patented locking mechanism
Convenient mounting system
#TOP 8

Onguard Bulldog STD-8010 Key Shackle Lock

8010
Black
11.5 x 23.0 cm
Onguard Bulldog STD-8010 Key Shackle Lock Cover
Onguard Bulldog STD-8010 Key Shackle Lock, Black, 11.5 x 23.0 cm

The Onguard Bulldog Lock features an X2P double bolt locking mechanism that secures the shackle on both sides, offering enhanced security for your bicycle. Its hefty 13mm hardened steel shackle is designed to resist cutting, prying, and jacking, ensuring that your bike remains safe from theft. The new double rubber-coated crossbar cover not only protects the lock itself but also your bike’s paintwork, preventing any scratches. Additionally, it comes with five laser-cut keys, including one with an LED microlight for easy access in the dark.

What We Like
Double bolt locking mechanism
Hardened steel shackle
Protective rubber coating
Includes LED key
#TOP 9

On-Guard 8003 Shackle Lock with LED Key

8003
Black
11.5 x 23.0 cm
On-Guard 8003 Shackle Lock with LED Key Cover
On-Guard 8003 Shackle Lock, Black, 11.5 x 23.0 cm

The On-Guard 8003 Lock is designed to provide exceptional security for your bicycle. Its X4P Quattro Bolt Locking Mechanism secures the shackle on four sides, giving you peace of mind. The hefty 14mm hardened steel shackle is built to resist cutting, prying, and jacking, ensuring your bike remains safe. Additionally, the new co-moulded crossbar cover and double rubber coated shackle protect your bike's finish from scratches. With five laser cut keys, one of which features a handy LED microlight, you can easily access your lock even in low light conditions.

What We Like
Highly secure locking mechanism
Durable steel shackle
Protects bike finishes
Convenient LED key
#TOP 10

ONGUARD Bulldog DT 8012C Combination U Lock

LK8012C
Yellow
ONGUARD Bulldog DT 8012C Combination U Lock Cover
ONGUARD Bulldog DT 8012C Combination Bike U Lock

The ONGUARD Bulldog U Lock offers robust security for your bicycle. Its X2P Double Bolt Locking Mechanism secures the shackle on both sides, providing enhanced protection against theft. The new bump-proof Z-Cylinder is designed to resist picking, pulling, and drilling, ensuring your bike remains safe. Additionally, the hefty 13mm hardened steel shackle is resistant to cutting, prying, and jacking, giving you peace of mind when leaving your bike unattended. The extra thick moulded end caps help protect the lock from bumps and hits, further enhancing its durability.

What We Like
Double bolt locking mechanism
Bump-proof Z-Cylinder
Hardened steel shackle
Durable moulded end caps
Buying Guide Image
Editor's Notes

During our ONGUARD cycling u-lock research, we found 53 ONGUARD cycling u-lock products and shortlisted 10 quality products. We collected and analyzed 14,155 customer reviews through our big data system to write the ONGUARD cycling u-locks list. We found that most customers choose ONGUARD cycling u-locks with an average price of £36.92.

The ONGUARD cycling u-locks are available for purchase. The top 10 picks range in price from a low of £27.00 to a high of £40.00, find the one that fits your budget. The seller of top 1 product has received honest feedback from 250 consumers with an average rating of 4.8.

Written by
Luke Dobson Avatar

Luke is a runner, a climber, hiker, hunter, and a lot more. Luke Dobson is Celtic-born and has lived most of his life in Scotland. However, his sporting endeavours have taken him to several countries around Europe. He serves as a tour guide for countless companies and owns a couple of gyms and recreational centres in Scotland. Luke Dobson is proficient in 7 different languages. He maintains many sport article columns where he shares his wealth of experience in the sport industry.