Best ONGUARD Cycling Chain Locks of 2026

Luke Dobson Avatar
Luke Dobson
Last Updated: 9 Feb 2026

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Cycling chain locks offer a reliable and secure way to protect your bike from theft. ONGUARD is a brand that provides a range of high-quality chain locks that are designed to protect your bike from theft. These chain locks are made using durable materials that can withstand cutting and prying, and they come in a range of sizes to fit different types of bikes. ONGUARD's cycling chain locks are a great investment for anyone who wants to keep their bike safe and secure, whether it's parked outside a shop or stored in a garage.

At a Glance: Our Top Picks

Onguard Mastiff 8022C Re-settable Combo Lock Cover #TOP 1
Onguard Mastiff 8022C Re-settable Combo Lock
ftb score rating icon 9.8
ONGUARD On-Guard Mastiff Lock Chain 110cm Cover #TOP 2
ONGUARD On-Guard Mastiff Lock Chain 110cm
ftb score rating icon 9.7
ONGUARD 8019 Mastiff 10mm Rugged Chain Lock Cover #TOP 3
ONGUARD 8019 Mastiff 10mm Rugged Chain Lock
ftb score rating icon 9.5

Top 10 ONGUARD Cycling Chain Locks

#TOP 1

Onguard Mastiff 8022C Re-settable Combo Lock

8022C
Black
8.0x0.8 cm
Onguard Mastiff 8022C Re-settable Combo Lock Cover
Onguard Mastiff 8022C Re-settable Combo Chain lock 80cmx8mm, Black

The Onguard Mastiff 8022C Lock offers a user-settable 4-digit steel ball combination, ensuring that only you have access to your bike. The 8mm titanium reinforced hardened steel square link chain provides robust resistance against cutting or prying, giving you peace of mind when securing your bicycle. Additionally, the chain cover protects your bike’s paint and finishes, while the embroidered logo is designed to resist flaking or wear. This combination of features makes it an excellent choice for cyclists who prioritise security and convenience.

What We Like
Customisable 4-digit combination
Resistant to cutting and prying
Protects bike's paint and finishes
Durable embroidered logo
#TOP 2

ONGUARD On-Guard Mastiff Lock Chain 110cm

2235501850
Black
110 x 10 cm
ONGUARD On-Guard Mastiff Lock Chain 110cm Cover
ONGUARD On-Guard Mastiff Lock Chain - Black, 110 x 10 cm

The ONGUARD Mastiff Lock Chain features titanium enforced hexagonal steel chain links, providing exceptional strength and durability for your bike security. The X4P Quattro Bolt Mechanism secures all four sides of the shackle, ensuring a robust lock against theft. With a 14mm hardened steel shackle, you can feel confident that your bike is well protected. Additionally, the Z-cylinder is bump-proof, resisting picking, pulling, or drilling, giving you peace of mind when leaving your bike unattended.

What We Like
Strong steel chain links
Secure bolt mechanism
Hardened steel shackle
Bump-proof cylinder
Durable chain cover
#TOP 3

ONGUARD 8019 Mastiff 10mm Rugged Chain Lock

8019
Black/Yellow
ONGUARD 8019 Mastiff 10mm Rugged Chain Lock Cover
ONGUARD 8019 Mastiff 10mm x 3.5' Rugged Chain

The ONGUARD Mastiff Chain Lock features a robust 3.5-foot chain paired with a Boxer U-Lock, ensuring your bicycle remains secure. The titanium enforced, hexagonal steel chain links offer exceptional cut resistance, providing peace of mind against theft. Additionally, the unique OnGuard cylinder is designed to resist both physical attacks and picking, enhancing your bike's security further. A reinforced sleeve over the crossbar and cylinder adds an extra layer of protection, making it a reliable choice for cyclist safety.

What We Like
Maximum cut resistance
High security against picking
Reinforced protection
Water and heat resistant
#TOP 4

Onguard Mastiff 8019LP Loop Chain Lock

8019LP
Black
130 x 10cm
Onguard Mastiff 8019LP Loop Chain Lock Cover
Onguard Mastiff 8019LP Loop Chain Length 130cmx10mm links with Nini Shackle Lock 14mm, Gold Sold Secure

The Onguard Mastiff Chain Lock features titanium enforced hexagonal steel chain links that provide enhanced durability and security for your bicycle. You can rely on the X4P Quattro bolt mechanism, which secures all four sides of the shackle, making it nearly impossible for thieves to access. Additionally, the hardened steel shackle offers an extra layer of protection against cutting. With a bump-proof Z-cylinder, you can feel confident that it resists picking, pulling, or drilling attempts, ensuring your bike remains safe.

What We Like
Highly durable chain links
Secure four-sided shackle
Hardened steel for extra protection
Bump-proof locking mechanism
Includes five laser cut keys
#TOP 5

ONGUARD Mastiff 8019L Secure Bike Lock

8019L
Gold
ONGUARD Mastiff 8019L Secure Bike Lock Cover
OnGuard Mastiff 8019L Bike Chain Lock (Sold Secure Bicycle Gold)

The ONGUARD Mastiff 8019L Lock offers exceptional security for your bicycle. Its Sold Secure Bicycle Gold rating ensures that you are investing in a reliable and robust lock. The automatic keyway cover protects the locking mechanism from the elements, giving you peace of mind in all weather conditions. Additionally, the 10mm titanium reinforced hardened steel chain is designed to resist cutting or prying, enhancing its strength. With a protective chain cover, you can rest easy knowing your bike's paint and finishes will remain unharmed.

What We Like
High security rating
Weatherproof keyway cover
Strong titanium reinforced chain
Protects bike finishes
#TOP 6

ONGUARD Mastiff Chain and Boxer U-Lock Combo

8019
Silver
ONGUARD Mastiff Chain and Boxer U-Lock Combo Cover
ONGUARD Mastiff Chain with Padlock

The ONGUARD Mastiff Chain Lock offers strong security with its 3.5ft long, 10mm hardened steel hexagonal link chain, ideal for securing your bike or powersport vehicle. The short shackle Boxer U-lock provides added protection and can also be used separately as a convenient disc lock for smaller items. You receive five laser cut keys, one featuring an LED micro light to help you unlock in the dark. This lock is designed to deter theft effectively, giving you confidence when leaving your possessions unattended.

What We Like
Hardened steel hexagonal chain
Boxer U-lock doubles as disc lock
Includes LED light key
Five laser cut keys supplied
#TOP 7

Onguard Beast Chain Lock with X2 Padlock 110cm

45008017
Black
110 cm x 12 mm
Onguard Beast Chain Lock with X2 Padlock 110cm Cover
Onguard Beast Chain Lock with X2 Padlock (Black, 110 cm x 12 mm)

The Onguard Beast X2 Padlock offers robust security with its 12mm thick chain, providing strong resistance against theft. The 110cm length gives you flexibility to secure your bike in various locations comfortably. Featuring the new X2P Dual Lock Down system, it ensures an added layer of protection, making it harder for thieves to tamper with. With a high security rating of 95, this lock is ideal for keeping your bike safe, giving you peace of mind when leaving it unattended.

What We Like
Strong 12mm thick chain
Flexible 110cm chain length
Advanced X2P Dual Lock Down
High security rating 95
#TOP 8

ONGUARD 8016L 6' Beast Hex Chain Lock

45008016L
Black
180 cm x 14 mm
ONGUARD 8016L 6' Beast Hex Chain Lock Cover
ONGUARD ONG: 8016L 6' BEAST HEX CHAIN 6'x14mm W/X4 LOCK, Black

The ONGUARD 8016L Chain Lock offers excellent security for your bicycle. It comes with five laser cut keys, including one micro-light key that projects a bright white beam, making it easier for you to unlock your bike in low light conditions. With a compact package height of 3.0 inches, it’s easy to store or carry. Its length of 18.5 inches and width of 8.0 inches ensures it can fit comfortably in most storage spaces. This combination of features provides convenience and peace of mind when securing your bike.

What We Like
Bright micro-light key
Compact storage dimensions
Five keys included
Durable chain lock design
#TOP 9

ONGUARD 6' Beast HEX Chain with X2 Lock

45008018
Black
180 cm x 12 mm
ONGUARD 6' Beast HEX Chain with X2 Lock Cover
ONGUARD ONG: 8018 6' Beast HEX Chain 6'x12mm W/X2 Lock

The ONGUARD Beast HEX Chain offers a longer 6-foot chain, giving you greater flexibility when locking your bike to various objects. Measuring 180cm by 12mm, this sturdy chain provides reliable security without being overly bulky. With a high security rating of 95, you can trust it to protect your belongings effectively. Additionally, it comes with five laser-cut keys, including one with a micro-light that shines a bright white beam, helping you unlock your bike easily even in low-light conditions. This makes the ONGUARD Beast HEX Chain a practical and secure choice for cyclists.

What We Like
Extra-long chain length
High security rating
Includes 5 laser-cut keys
Micro-light key for dark
#TOP 10

ONGUARD Beast HEX Chain Lock 210 cm Black

45008018L
Black
210 cm x 12 mm
ONGUARD Beast HEX Chain Lock 210 cm Black Cover
ONGUARD 45008018L Beast HEX Chain Lock, Black, 210 cm x 12 mm

The ONGUARD Beast HEX Lock comes with five laser cut keys, including one micro-light key that projects a bright white beam. This feature is handy for using the lock in low-light conditions, making it easier for you to secure your bike at night. The lock measures 210 cm by 12 mm, providing a strong and lengthy chain to protect your bike. Its compact packaging, with dimensions of 18.875" by 7.375" by 2.25", makes it easy to carry or store when not in use.

What We Like
Includes five laser cut keys
Micro-light key for night use
Long 210 cm chain length
Compact and portable packaging
Buying Guide Image
Editor's Notes

During our ONGUARD cycling chain lock research, we found 22 ONGUARD cycling chain lock products and shortlisted 10 quality products. We collected and analyzed 4,045 customer reviews through our big data system to write the ONGUARD cycling chain locks list. We found that most customers choose ONGUARD cycling chain locks with an average price of £104.72.

The ONGUARD cycling chain locks are available for purchase. The top 10 picks range in price from a low of £27.00 to a high of £179.00, find the one that fits your budget.

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.