Engineered for ultimate urban bike security, the Diamond Standard U-Lock features a 26mm diamond-coated, double-layered steel shackle designed to resist angle grinder attacks. Its patent-pending hardened double deadbolt mechanism and highest-security disc-style cylinder offer superior protection against twist, cut, pick, and drill attempts. With built-in features like a sliding dustcover, protective vinyl coating, and the FLEXFRAME-U bracket for easy transport, this lock is built for real-world durability. It also includes 3 stainless steel keys, a Key Safe Program, and 5 years of free Anti-Theft Protection Offer (ATPO).
Diamond-Coated 26mm Shackle provides double-layered steel that resists angle grinder attacks and maximizes cut resistance
Hardened Double Deadbolt & Disc-Style Cylinder features a patent-pending design that defends against twist, pick, and drill attacks
Built for the Streets includes FLEXFRAME-U bracket, sliding dustcover, protective vinyl coating, and 3 stainless steel keys
Peace of Mind with 5-year free ATPO, Key Safe Program, and tested performance in real-world urban conditions
California Prop 65 Warning:
This product may contain chemicals known to the state of California to cause cancer and birth defects or other reproductive harm. (California law requires this warning be given to customers in the state of California.)
California CBE Fees:
Some products we sell may be subject to California’s Covered Battery-Embedded (CBE) Waste Recycling Fee (effective January 1, 2026) when a product contains a non-removable rechargeable battery. If applicable, the fee (1.5% fee with a $15 max per item) will either be added to your cart as a separate line item or be invoiced after your order is placed and before it can be fulfilled.
