Best ONGUARD Cycling U-Locks of 2025

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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
Top 10 ONGUARD Cycling U-Locks
ONGUARD Pitbull DT Lock with Cable
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.
OnGuard Brute LS-8000 High Security Bike 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.
ONGUARD Pitbull LS 8002 U-Lock for Cycling
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.
ONGUARD 45008006M Pitbull Bicycle Lock with Keys
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.
OnGuard Bulldog LS High Security Bike Lock
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.
Onguard Bulldog Combo Shackle Lock DT-8012C
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.
ONGUARD Pitbull STD 8003 Secure Bike Lock
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.
Onguard Bulldog STD-8010 Key Shackle Lock
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.
On-Guard 8003 Shackle Lock with LED Key
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.
ONGUARD Bulldog DT 8012C Combination 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.
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.

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.