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ONGUARD Pitbull Keyed Shackle Lock: Heavy-duty security for bikes and gates

On-Guard Pitbull STD-8003 Keyed Shackle Lock, Black, 11.5 x 23.0 cm
4.7
[Quattro Bolt Locking]  Locks shackle on four sides for maximum tamper resistance.
[Hardened Steel Shackle]  14mm hardened steel shackle resists cutting, prying, and jacking.
[Finish-Protecting Design]  Co-molded crossbar cover and double rubber coating protect finishes from scratches.
[Laser Cut Keys and Light]  Includes five laser cut keys; one key has LED microlight for low-light use.
[Lifetime Warranty]  Lifetime warranty guarantees long-term reliability and customer support.
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Bike and outdoor security lock engineered to resist cutting, prying and jacking. Security-conscious cyclists and commuters gain clear peace of mind with ONGUARD Pitbull Keyed Shackle Lock. Does the level of protection and rugged build justify the extra bulk for everyday use?

⚡ At a Glance
  • Locking Mechanism: X4P Quattro Bolt locks shackle on four sides for stronger anchoring
  • Best for: Cyclists and owners of outdoor equipment who need robust theft deterrence
  • Not ideal for: Users who need an ultra-lightweight lock for quick, short stops

Four-sided X4P Quattro Bolt locking gives multiple anchor points for the shackle. A 14mm hardened steel shackle resists cutting, prying and jacking while protective coverings preserve finishes.


Resists cutting and prying – with a 14mm hardened steel shackle

Hardened steel construction uses a 14mm shackle diameter that increases resistance to bolt cutters and levering. The material and thickness slow attacks and require specialised tools to compromise.

Higher physical resistance deters opportunistic thieves and raises the effort required to force a theft. Suitable for leaving bicycles and gates secured in public areas.

Secure anchoring under attack – thanks to the X4P Quattro Bolt Locking Mechanism

The X4P Quattro Bolt system locks the shackle on four sides, creating multiple locking points within the crossbar. Distributed locking reduces leverage points and prevents easy shackle removal.

Greater resistance to prying and jacking attempts improves overall security compared with single-sided locks. Ideal for locations where determined tampering is a realistic risk.

Keeps finishes intact and keys usable at night – with co-moulded cover and LED microlight

Co-moulded crossbar cover and double rubber coating on the shackle prevent metal-to-paint contact, while one supplied key includes an LED microlight for low-light access. Five laser-cut keys allow spares or shared use.

Bike frames stay protected from scratches during use, and illuminated key access makes locking and unlocking easier in the dark. A supplied holster helps keep the lock handy while riding.

✨ The 4 Key Reasons for ONGUARD Pitbull Keyed Shackle Lock
  1. Sold Secure Gold rating - Independent recognition of robust resistance to common theft methods
  2. Lifetime Warranty - Manufacturer backing for long-term reliability and peace of mind
  3. Five laser-cut keys, one with LED microlight - Ready-to-use keys and improved access after dark
  4. Co-moulded crossbar and rubber-coated shackle - Protects bike paint while reducing weather exposure
📋 Technical Details at a Glance
  • Type: Keyed shackle lock
  • Locking Mechanism: X4P Quattro Bolt locking on four sides
  • Shackle Thickness: 14mm hardened steel
  • Shackle Coating: Double rubber coating
  • Crossbar Cover: Co-moulded crossbar cover
❓ Frequently Asked Questions

Q: Is the lock suitable for securing a bicycle?

A: Yes. A 14mm hardened steel shackle combined with the X4P Quattro Bolt locking mechanism is designed to resist cutting, prying and jacking, making it suitable for bicycle security.

Q: Does the lock come with keys and a light?

A: Yes. Five laser-cut keys are supplied, one of which includes an LED microlight for use in low-light conditions.

Q: Is there any warranty or aftercare?

A: Yes. The lock is supplied with a lifetime warranty as stated in the product descriptions.

🏆 Our Verdict

The ONGUARD Pitbull Keyed Shackle Lock suits cyclists, commuters and owners of outdoor equipment who need robust theft deterrence. A combination of a 14mm hardened shackle, four-sided X4P Quattro Bolt locking and protective coatings makes the lock particularly resilient and bike-friendly. Long-term value is supported by a lifetime warranty and practical extras like multiple keys and an LED microlight.