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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.

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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.