Best Heavy Duty Cycling Chain Locks of 2025

Luke Dobson Avatar
Luke Dobson
Last Updated: 7 Feb 2025

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For cyclists who are serious about securing their bikes, heavy duty cycling chain locks are a must-have. These locks are designed to provide maximum security and peace of mind, with durable chains that are resistant to cutting and tampering. They come in a range of sizes and lengths to accommodate different types of bikes and locking situations, and are often accompanied by sturdy padlocks that are difficult to pick or break. With a heavy duty cycling chain lock, cyclists can be confident that their bike is secure and protected from theft, whether it's parked outside a shop or left overnight in a garage or storage unit.

At a Glance: Our Top Picks

GRIFEMA GA1201-12 High Security Bike Lock Cover #TOP 1
GRIFEMA GA1201-12 High Security Bike Lock
ftb score rating icon 9.8
H&S Heavy Duty Motorbike Lock with Padlock Cover #TOP 2
H&S Heavy Duty Motorbike Lock with Padlock
ftb score rating icon 9.7
H&S Heavy Duty Motorbike Lock and Chain Cover #TOP 3
H&S Heavy Duty Motorbike Lock and Chain
ftb score rating icon 9.5

Top 10 Heavy Duty Cycling Chain Locks

#TOP 1

GRIFEMA GA1201-12 High Security Bike Lock

GA1201-12
Black/White
GRIFEMA GA1201-12 High Security Bike Lock Cover
GRIFEMA GA1201-12 Bike Locks High Security with 2 Keys, Bike Chain Lock Heavy Duty, 120cm Bicycle/Cycling Locks for Bike Cycle, Moto, Door, Gate Fence, Black/White

The GRIFEMA Bike Chain Lock offers high anti-theft protection with its durable zinc alloy lock cylinder and robust 7mm diameter chain. This makes it difficult for intruders to break through, giving you peace of mind. With two keys provided, you can easily keep a spare to avoid being locked out. The waterproof feature ensures that the lock cylinder remains free from dust and rust, prolonging its lifespan. Additionally, the nylon cover protects against scratches, safeguarding your bicycle frame while enhancing the lock’s durability.

What We Like
High anti-theft protection
Includes two keys
Waterproof and dustproof
Scratch-proof nylon cover
Versatile for multiple uses
#TOP 2

H&S Heavy Duty Motorbike Lock with Padlock

H&S
Silver
H&S Heavy Duty Motorbike Lock with Padlock Cover
H&S Heavy Duty Motorbike Lock with Padlock - Anti-Theft Thick 10mm x 1.2m Bike Locks High Security Chain - Bicycle Motorcycle Lock and Padlock with Scratch-Proof Nylon Sleeve

The H&S Motorbike Lock offers exceptional security for your motorcycle or bicycle. Made from strong, durable boron manganese steel, this lock is resistant to cutting, ensuring your vehicle remains safe. Its 1.2 metre chain features 10mm wide links, which effectively prevent leverage attacks, giving you peace of mind. The protective nylon sleeve not only safeguards the lock from wear and tear but also prevents scratches on your bike, allowing you to keep your equipment in pristine condition.

What We Like
Highly secure and durable
Resists cutting and leverage attacks
Scratch-proof nylon sleeve
Versatile for various equipment
#TOP 3

H&S Heavy Duty Motorbike Lock and Chain

H&S
Silver
H&S Heavy Duty Motorbike Lock and Chain Cover
H&S Heavy Duty Motorbike Lock with Padlock | 6mm x 1.2m | Motorcycle & Scooter Lock with Security Chain | 2m Bike Locks High Security | Strong Chain & Locking Padlock (6mm Dia x 1200mm Length)

The H&S Motorbike Chain Lock is a robust solution for securing your motorcycle or scooter. Made from triple heat-treated boron manganese steel, it offers exceptional cut resistance and durability, giving you peace of mind. With a 1.2 metre long chain featuring 6mm wide links, it effectively resists leverage attacks. The water-resistant nylon sleeve protects your bike from scratches, ensuring your equipment remains in pristine condition. This high-security padlock and chain set is also versatile enough to secure various items like garden equipment and tools.

What We Like
Strong and durable construction
Resists leverage attacks
Scratch-proof protective cover
Versatile for various uses
#TOP 4

ValueMax Heavy Duty Bike Chain Lock

V133026AU
Black / White
1000 mm * 8 mm
ValueMax Heavy Duty Bike Chain Lock Cover
ValueMax Bike Chain Lock, 8mm*1m Heavy Duty Chain Lock with 5-Digit Resettable Codes, High Security Chain and Lock Combination Anti-Theft for Bicycle, Motorcycle, Electric Vehicle, Front Door, Scooter

The ValueMax Chain Lock features a robust 8mm cut-resistant steel chain, ensuring that your bicycle or motorcycle remains secure from thieves. The keyless lock mechanism utilises a 5-digit resettable code, eliminating the worry of losing keys. You can easily set and reset the combination in just four steps, making it highly user-friendly. This versatile lock is suitable for various applications, from securing bikes to protecting gates and fences, providing excellent value for property protection.

What We Like
Highly secure cut-resistant chain
Keyless operation with digital codes
Easy to set and reset codes
Versatile for multiple applications
#TOP 5

SPGOOD Heavy Duty Bike Lock with 5-Digit Code

A-black
SPGOOD Heavy Duty Bike Lock with 5-Digit Code Cover
SPGOOD Bike Locks Heavy Duty/Bicycle Chain/Cycling Lock (14 Colors) 5-Digits Codes Resettable 100,000 Codes for Bike Cycle, Moto, Door, Gate Fence 830mm Length(Black)

The SPGOOD Bike Lock offers a practical solution for securing your bicycle, scooter, or other belongings. With a 5-digit personal password that you can easily customise, it ensures your items are protected from theft. The lock is made from improved materials, enhancing its durability for long-term use. Its 830 mm length and 750 g weight make it versatile enough to secure various items. Additionally, the 7 mm thick hardened steel chain provides strong protection, giving you peace of mind wherever you go.

What We Like
Customisable 5-digit password
Durable materials used
Versatile 830 mm length
Strong 7 mm steel chain
Available in 14 colours

Sportneer Heavy Duty Bike Chain Lock

98ca82c4-bbe3-4567-a453-12c4b1bc73a9
Black
8mm*100cm
Sportneer Heavy Duty Bike Chain Lock Cover
Sportneer Bike Chain Lock Heavy Duty Bicycle Lock 8mm Dia Thick High Security Anti-Theft Cycling Locks Uncuttable Portable with 2 Keys for Scooter, Bike, Motorcycle, Door, Gate, Fence, Grill

The Sportneer Bike Lock features an ultra-thick 8mm chain made from premium manganese steel, ensuring your property remains secure against theft. Its waterproof and dirt-proof cap keeps the keyhole clean and functional, saving you time during use. Additionally, the wear-resistant protective cover prevents scratches on your bike, maintaining its appearance. The sturdy copper keys are designed for strength and durability, allowing you to keep a backup key at home for convenience. This versatile lock is perfect for securing not just bikes, but gates, doors, and other valuables as well.

What We Like
Ultra-thick chain for security
Waterproof and dirt-proof cap
Wear-resistant protective cover
Sturdy copper keys
Versatile for various items
#TOP 7

BEEWAY Heavy Duty Bike Chain Lock

CHALOC#1
Black
BEEWAY Heavy Duty Bike Chain Lock Cover
BEEWAY Bike Chain Lock, Heavy Duty 5-Digit Resettable Combination Lock Ideal for Bicycle, Motorbike, Scooter, Fence, Gate - 90cm, 9 Colors

The BEEWAY Bike Chain Lock offers exceptional security for your bicycle with its ultra-thick 6mm manganese steel construction, protecting against cutting and sawing. The keyless 5-digit combination lock provides over 100,000 possible codes, ensuring convenient yet robust protection. Its reinforced plug and lock core are made from durable zinc alloy, preventing rust and enhancing longevity. Additionally, the lock's nylon fabric covering protects both the lock and your bike frame from scratches, extending its lifespan while adding a touch of style.

What We Like
Exceptional theft protection
Keyless convenience
Durable and rust-resistant
Scratch protection for bikes
Versatile for various uses
#TOP 8

Titanker Heavy Duty Bike Chain Lock

1030200300018
Black
Titanker Heavy Duty Bike Chain Lock Cover
Titanker Bike Chain Lock, Heavy Duty Bicycle Lock, High Security Cycling Locks with 2 Keys, Anti-Theft Lock Chain for Bike Motorcycle, Bicycle, Door, Gate, Fence, Grill (920mm x 6mm)

The Titanker Bike Lock offers impressive security for your bicycle with its 6mm thick heavy-duty steel chain, providing cut-resistance to deter thieves. The protective cloth sleeve ensures the chain remains rust-free and scratch-free, maintaining its appearance and functionality. Additionally, the lock features a dust-proof cover to keep the keyhole clean and free from debris, enhancing durability. With two keys included, you can easily replace a lost key, ensuring convenience and peace of mind when securing your bike.

What We Like
High security and cut-resistant
Protective sleeve prevents rust
Dust-proof cover for keyhole
Includes two keys for convenience
Portable and versatile use
#TOP 9

KOHLBURG 4ft Heavy Duty Bicycle Lock

Helsinki
Black
KOHLBURG 4ft Heavy Duty Bicycle Lock Cover
KOHLBURG Security Chain Lock Sold Secure Gold - 4ft / 120cm Extra-Long Bicycle Lock - high Security Standard - Heavy Duty Lock 0.33" Strong - Secure Bike Chain Lock for e-Bike Bicycle Motorbike

The KOHLBURG Chain Lock prioritises security for your bike or motorbike with its robust construction. Made from solid hardened steel, it offers exceptional protection against bolt cutters and saws, ensuring your vehicle remains safe. With a generous length of 4 feet, you can easily secure both your bike frame and front wheel to a fixed object. Additionally, the lock features a secure anti-lock-picking cylinder, giving you peace of mind. The soft sleeve coating also protects your bike's varnish, making it a practical choice for any cyclist.

What We Like
Exceptional security against theft
Heavy-duty, durable construction
4ft length for versatile locking
Protects bike's varnish
Includes 4 keys for convenience
#TOP 10

All Lemon Heavy Duty Bike Chain Lock

AL-BL01LB
Blue
6 x 900 mm
All Lemon Heavy Duty Bike Chain Lock Cover
Bike Chain Lock & Extra Strong Heavy Duty Steel | Long High Security Cable Combination Code: Bicycle Motor Cycling, Door Gate Fence Outdoor Wheel Cycle Safety Theft Protection, 5-Digit Figures Secure

The All Lemon Bike Lock offers exceptional security for your bicycle with its robust 6mm thick steel chain, ensuring long-lasting protection against theft. Its 90cm length provides flexibility, allowing you to lock your bike to various objects, even when a stand is unavailable. The weatherproof textile cover prevents paint damage, keeping your bike looking pristine. Additionally, the lock features a 5-digit code with 100,000 possible combinations, making it easy to use while ensuring a secure fit for your needs.

What We Like
High security against theft
Flexible locking options
Weatherproof cover protects bike
Easy-to-set combination code
Durable steel construction
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How thick should a bike chain lock be?

And if you want to be absolutely sure your bike lock can't be defeated by bolt cutters, you normally need a chain or a u-lock shackle that is at least 16 mm thick. Because at 16 mm, good quality, properly hardened steel is too thick to be cropped by any manual bolt cutters.

2. What is the most secure chain?

We carry Pewag Security Chains that are considered to be the toughest security chains out there. By being the toughest chain, we mean the Pewag chain is the hardest chain to cut with bolt cutters. The biggest reason is the hardened steel chain is squared, so it will not allow bolt cutters to cut through it.

3. Which bike locks are hardest to cut?

Is There a Bike Lock That Can't Be Cut? The Altor SAF and the Skunklock are the two most uncuttable bike locks on the market. Both of these locks employ anti-cut features that make them capable of defeating power tools. These two locks are the strongest and most unbreakable bike locks on the market.

Editor's Notes

During our heavy duty cycling chain lock research, we found 248 heavy duty cycling chain lock products and shortlisted 10 quality products. We collected and analyzed 176,184 customer reviews through our big data system to write the heavy duty cycling chain locks list. We found that most customers choose heavy duty cycling chain locks with an average price of £11.52.

The heavy duty cycling chain locks are available for purchase. We have researched hundreds of brands and picked the top brands of heavy duty cycling chain locks, including GRIFEMA, H&S, ValueMax, SPGOOD, Sportneer.

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.