Motorcycle Grade Security
Thick square chains provide professional protection for motorized vehicles.
Heavy duty chain locks and motorcycle-grade security designed for high-risk vehicle protection. These 10mm to 15mm thick steel chains provide cut-proof security for motorcycles, generators, and gates
Thick square chains provide professional protection for motorized vehicles.
Hardened 15mm and 12mm steel links resist heavy duty tools.
Lengths up to 4 ft allow for securing large objects.
The collection centers on 10mm, 12mm, and 15mm thick square chains. These keyed systems often combine long chains with 16mm U-locks for comprehensive coverage.




BIGLUFU locks in this range cover Heavy duty bike locks, Heavy duty chain locks, Motorcycle grade locks, 4ft long bike locks.
BIGLUFU keeps the build language in the product names: Heavy duty four foot motorcycle chain lock; Waterproof motorcycle chain lock 3.3 feet; Hardened steel chain with 16mm U-lock.
The range is aimed at the uses named in Heavy duty bike locks, Heavy duty chain locks, Motorcycle grade locks, 4ft long bike locks, not a catch-all.
Start with Heavy duty four foot motorcycle chain lock; Waterproof motorcycle chain lock 3.3 feet; Hardened steel chain with 16mm U-lock and match the listed type to what you need.
Also in Heavy duty chain locks Heavy duty
The 15mm square chain is incredibly heavy duty and secures my generator perfectly.
I use the 4 ft motorcycle chain lock for my scooter and the 16mm U-lock adds extra security.
The 12mm thick chain feels very durable and the keys operate smoothly in the lock.
8.1
same Electric scooter locks — 51% higher weight
same Electric scooter locks — 20% less weight
8.5
same Electric scooter locks — 77% less weight
same Electric scooter locks — same weight
7.8
same Electric scooter locks — same weight
same Electric scooter locks — 15% higher weight
The catalog features 15mm cut proof square chains.
Yes, these heavy duty chains are ideal for gates and generators.
Chains are available in 3.3 ft and 4 ft lengths.
Yes, the motorcycle chain locks include up to 4 keys.