Skip to content

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

4.9 ★★★★★ 119 Google reviews of Dialed Cycling Lab Read all reviews on Google ↗
“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!”
Scott Phillips · Google review
“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
Google review
“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.”
Google review

Questions about this one?

Not sure on size, compatibility, or whether this is the right one for you? Ask us. A real person here will answer.

You are asking about OnGuard PitBull Series U-Lock - 4.5 x 9" | Keyed

Goes straight to the Lab with the product you were looking at attached. No newsletter signup.