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Blackburn San Quentin U-Lock

Sale $49.47 $89.95 45% off

Item # BLB0084 Past Season Colors

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Item # BLB0084

It's what NASA uses to lock up the Rover on the moon

Place your bike in solitary with the Blackburn San Quentin Bike U-Lock. The 18mm cut-resistant alloy steel shackle with anti-scratch liner will spoil any theft-attempt without scratching up your beautiful ride. The bump-proof, pick-proof dual-bolt locking mechanism will stand up to Hollywood's most clever jewel thief, and the $4,000 theft replacement guarantee has you covered in the event of the unthinkable.

Tech Specs

Lock Type:
199 X 102 mm
Recommended Use:
maximum security
Manufacturer Warranty:

Reviews & Community


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It weighs as much as your road bike

    This thing is heavy! That's a good thing for locks but if you already carry a 19 inch Dell laptop in your backpack this lock won't do you any favors.

    Bike is going nowhere!

    • Familiarity: I've used it several times

    Purchased this lock based on other reviews. This is the most solid bike lock I have used....hands down! The $4k theft replacement is indicative of the protection assurance . Size is standard for other U-Locks I have owned. Despite the heftiness of the lock, it is quite easy to lock/unlock. Rubber bumper lining minimizes the potential for scratching the bike frame. I can't imagine ever needing to purchase another lock again.


      This thing is heavy but that means it's built to withstand theft. I feel good about locking my bike up with this since I think it would be quite a large amount of effort to get through it to my bike. The insurance policy gives great piece of mind

      Heavy, Beefy

      • Familiarity: I've used it several times

      This lock is definitely on the heavy side, but would you really rather have a lightweight lock to safely secure your bike? I, like a couple others, had a hard time fitting it on my frame with the mount, so I either throw it in a backpack or lock it around the triangle by the front wheel. The lock engages and disengages smoothly and I'm certainly satisfied with my purchase.


      • Familiarity: I've put it through the wringer

      This is a STRONG LOCK it looks good opens & closes good. I could not use the connector that came with the lock, It would not fit my bike so I am using the lock it self as the connector it's working great as seen in photo


      Solid! Solid!

      • Familiarity: I've used it several times

      I've been using this for a few weeks now and I always feel good leaving my new cross bike outside the bar, grocery store, coffee shop, you name it. Pretty beefy as far as locks come when i saw it compared to my friends, in combination with a cable lock I have no qualms, and I'm pretty bike-anoid myself. The frame mount went on to my frame no problem as well, I just don't have room in my inner triangle for the lock with bottle cages.

      Good for the Guarantee

        I have only had this lock for a week and used it pretty much every day so far. I love that it lock comes with a 4,000 theft replacement guarantee, which is really the main reason I purchased it. It is a bit on the heavy side which is my only real complaint. the scratch resistant material is one of the few that actually holds true. I have used it both on a carbon frame and an aluminum neither having marks on them afterwords. Even if it has been a little tight squeeze. Overall so far I am pretty satisfied with the lock.

        Unanswered Question

        How Heavy is the Blakburn San Quentin...

        How Heavy is the Blakburn San Quentin U-Lock?