OnGuard PitBull Series U-Lock - 4.5 x 9" | Keyed
Locks
OnGuard PitBull Series U-Lock - 4.5 x 9" · Keyed
OnGuard PitBull Series U-Lock - 4.5 x 9" | Keyed
The OnGuard PitBull Series U-Lock steps up the security game with 8.4 tons of pull strength and a higher-quality lock core that resists picking and drilling better than entry-level options. Read the overview
At a glance
- Lock Type
- Keyed
- Pull Strength
- 8.4 tons
- Shackle
- Hardened steel
- Interior Dimensions
- 4.5 x 9 inches
1 in stock
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Overview
Is the PitBull U-Lock Worth It for Serious Security?
The OnGuard PitBull Series U-Lock steps up the security game with 8.4 tons of pull strength and a higher-quality lock core that resists picking and drilling better than entry-level options. Built for cyclists who park in high-theft urban environments, the PitBull is engineered to outlast and outwit the most common attack methods. The hardened steel shackle at 4.5 x 9 inches hits the sweet spot between coverage and portability.
The PitBull comes keyed with multiple keys included, making it a reliable daily workhorse for commuters who want no-fuss security. The 4.5 x 9 inch interior dimensions work well for locking a frame and wheel to most standard racks and street posts. If you're investing in a quality bike and parking in urban areas regularly, the PitBull is the OnGuard model to reach for.
All the specs
MPN 8005
- Pull Strength
- 8.4 tons
- Shackle
- Hardened steel
- Interior Dimensions
- 4.5 x 9 inches
- Lock Type
- Keyed
FAQ
Good questions
Get to know OnGuard

There's more to OnGuard than this one product. Our OnGuard page has the full OnGuard lineup we carry and more about the brand.
Visit the OnGuard page →How does the PitBull differ from the BullDog?
The PitBull features a higher-quality lock core and 8.4 tons of pull strength, making it the more secure option in the OnGuard lineup compared to the BullDog.
How many keys come with the PitBull?
The PitBull includes multiple keys. Exact count varies by retail packaging.
Is the PitBull a good choice for high-theft urban areas?
Yes. The PitBull's enhanced lock core and high pull strength make it one of OnGuard's strongest options for locking in busy, higher-risk locations.
Reviews
What riders say about the Lab
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
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“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
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