Bike locks / ONGUARD / Standard Pitbull U-Lock with Quad Lock Mechanism
ONGUARD · 9.3

Standard Pitbull U-Lock with Quad Lock Mechanism

$67
Catalog updated 2026-10-21

This standard-sized U-lock is built with a 14 mm hardened steel shackle to provide a high level of security for urban environments. The interior clearance of 115 mm by 230 mm offers versatility when locking the bike to different types of posts or racks. Its solid construction is designed to withstand aggressive physical attacks, including cutting and prying attempts by potential thieves.

The device features a quad lock mechanism that secures the shackle on four sides, providing superior holding power compared to standard locks. This system is paired with a high-security cylinder that is resistant to picking and drilling. The protective coatings on the shackle and crossbar help to prevent metal-on-metal contact, protecting the bicycle frame from unsightly scratches and dings.

For convenient transport, the lock comes with a mounting bracket that attaches easily to most bicycle frames. Five laser-cut keys are included in the package, ensuring that multiple users can have access or that spares are readily available. This model strikes a balance between weight and strength, making it a reliable everyday security tool for commuters and recreational riders.

Standard Pitbull U-Lock with Quad Lock Mechanism
The gist

How it lands

8 reviews behind this list

Why it lands

  • Heavy duty security 7
  • Included mounting bracket 4
  • Multiple spare keys 4
  • Smooth lock mechanism 3
  • Paint protection coating 2

Why it slips

  • Heavy and bulky 2
  • Size limitations 2
  • Included mounting bracket 1
  • Limited color options 1
  • Mount usability issues 1
  • Rust on shackle tips 1
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Hardened steel locks Heavy duty U-locks 14mm thick
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