SIGTUNA Bike Lock is a heavy-duty bike lock designed to resist cutting and leverage attacks while securing bikes in urban environments. Secure fastening and a 1.2 metre steel chain give commuters and e-bike owners greater peace of mind. Does such robust security balance convenience for everyday rides?
⚡ At a Glance
- • Security Level: 16mm high-performance steel shackle with disc-style cylinder resists cutting and leverage attacks
- • Best for: Commuters, e-bike owners and cyclists who need robust urban security
- • Not ideal for: Riders prioritising ultralight portability over maximum theft resistance
Heavy-duty U-lock construction pairs a 16mm hardened-steel shackle with a 1.2 metre steel chain. A disc-style cylinder and double deadbolt locking system increase pick and leverage resistance.
Resists cutting and leverage attacks – Thanks to a 16mm high-performance steel shackle
Hardened 16mm steel shackle and PVC coating create a tough barrier against bolt cutters and leverage tools while protecting paintwork. A robust construction reduces common failure points around the shackle and lock seat.
Strong shackle construction significantly reduces the chance of the lock being defeated by cutting or levering. That means greater confidence when leaving a bike in busy urban locations.
Greater anchoring flexibility – With a 1.2 metre steel chain cable
A 1.2 metre heavy-duty steel chain allows attachment to larger fixed objects and crossbars that a U-lock alone cannot reach. PVC coating keeps the chain quiet and prevents abrasion on frames.
Longer reach makes it simpler to secure frame and wheels to a variety of street furniture. More anchoring options reduce risk of opportunistic theft.
Reduced lock tampering – With disc-style cylinder and double deadbolt mechanism
Disc-style cylinder design offers higher pick resistance than standard pin-tumbler cylinders, while a double deadbolt secures both sides of the shackle into the lock body. Three high-security keys are supplied for redundancy.
Lock tampering becomes harder and less likely to succeed, and having spare keys reduces the inconvenience of a lost key. Everyday use remains straightforward while security stays strong.
✨ The 4 Key Reasons for SIGTUNA Bike Lock
- Versatile fit – Secures road, electric, folding and mountain bikes to fixed objects
- Frame mount included – Keeps the lock accessible and stable during rides and storage
- Three high-security keys – Two spares reduce risk of lockout if one is lost
- PVC-coated components – Prevents frame scratches while maintaining reliable durability
📋 Technical Details at a Glance
- Category: Bike lock
- Lock type: U-lock (D-lock) with chain cable
- Shackle thickness: 16mm
- Shackle material: High-performance hardened steel
- Cable length: 1.2 metre steel chain cable
❓ Frequently Asked Questions
Q: Is this lock suitable for electric bikes?
A: Yes. Product descriptions list suitability for electric bikes alongside road, folding and mountain bikes.
Q: How many keys are included and what are they for?
A: Three high-security keys are supplied; one can be carried for daily use and two kept as spares at home.
Q: How long is the chain cable and what is it used for?
A: The chain cable measures 1.2 metres and allows attachment to crossbars or larger fixed objects to prevent pulling and prying up.
🏆 Our Verdict
The SIGTUNA Bike Lock suits commuters and riders who prioritise robust theft protection over minimal weight. A hardened 16mm shackle, disc-style cylinder and 1.2 metre chain give a combination of strength and anchoring flexibility. Bulky compared with minimalist locks, the durable build and spare keys make it a practical long-term choice for everyday security.
