OTTOLOCK Sidekick XL U-Lock Orange - Full-Size Heavy Duty

In this review the OTTOLOCK Sidekick XL is evaluated as a practical, full-size U-lock for riders who want a balance of security and portability. The bottom line: this lock is best for commuters and casual cyclists who need a durable theft deterrent that is still light enough to carry in a bag. Its silicone-coated body protects frames while the double-shackle 14mm hardened steel and anti-rotation deadbolt offer dependable security without the bulk of a heavier chain or large lock.

Key Features

• Convenient U-LOCK: The compact design deters opportunistic theft while remaining small enough to fit in backpacks or bags for daily carry.
• Full-Size Opening: The 4in x 9.5in lock opening gives more options for locking a bike tube and wheel to a post or pole compared with smaller U-locks.
• Lightweight for Its Class: At about 1.1 kg (2.4 lbs) the lock is easier to handle and transport than many heavy-duty alternatives without sacrificing core strength.
• Frame Protection: A silicone-coated body prevents scratches or paint damage to frames during routine use and transport.
• Robust Construction: Double-shackle 14mm hardened steel and an anti-rotation deadbolt increase cut resistance and long-term durability.
• Includes Keys: Each lock ships with three keys to reduce the risk of losing access during daily use.

Who It's For

The Sidekick XL is suited to urban commuters, students, and riders using mixed transit who want better security than a cable lock but do not want to carry a heavy chain. It works well for locking one wheel and the frame to a secure fixture during short to medium stops.

Riders who need to secure two bikes at once, or who regularly leave a bike overnight in very high-risk areas, should consider heavier multi-point solutions or a secondary lock. Those requiring a very large locking clearance should verify the 4in x 9.5in opening meets their preferred locking method.

Pros & Cons

Pros

• Strong feel from double-shackle 14mm hardened steel and an anti-rotation deadbolt.
• Silicone coating protects bike frames from scratches during use and transport.
• Light enough at about 2.4 lbs to carry in a bag yet substantial enough to deter opportunistic theft.

Cons

• Size gets mixed feedback; the 4in x 9.5in opening may be limiting for some locking situations.

Specifications

Our Verdict

The OTTOLOCK Sidekick XL is a sensible choice for riders who want a middle ground between portability and robust protection. It offers solid security features and frame-friendly protection at a reasonable carry weight, making it good value for commuters and everyday cyclists who lock up in moderate-risk environments.

Frequently Asked Questions

How many keys come with the lock?
The Sidekick XL ships with three keys included.

Will this scratch my bike frame?
No, the lock body is coated in high-quality silicone designed to prevent scratches and protect paint.

Can it secure both wheels and the frame?
It is best used to lock a single tube and one wheel to a post or pole; riders needing to secure both wheels may want a secondary lock.