About this item

• Stop Thieves Before They Start: Serious bikes deserve serious protection. Featuring an 18mm hardened alloy steel shackle, dual-locking mechanism, and a 3.94ft square security chain engineered to deliver up to 2X greater cut resistance than traditional round chains, this complete security system helps defend your ride against cutting, prying, and theft—so you can park with confidence wherever the day takes you.
• One Lock. Endless Possibilities: More than just a bike lock. The spacious U lock paired with the extended square chain gives you the flexibility to secure bikes, e-bikes, motorcycles, scooters, gates, fences, trailers, ladders, grills, lawn equipment, and more. Need to lock multiple bikes together? Simply loop the chain through itself for greater versatility.
• Heavy-Duty Security Without the Hassle: Powerful doesn't have to mean inconvenient. The adjustable frame mount fits 22–80mm bike tubes, allowing you to carry your U lock securely without a backpack. An integrated O-ring neatly stores excess straps, while the included hook-and-loop strap keeps the chain compact and organized for everyday commuting.
• Built for Every Ride, Every Season: Rain, dust, mud, or sunshine—this lock is ready. A silicone-coated U shackle and durable woven chain sleeve help protect your bike's finish from scratches, while the built-in dust cover shields the precision lock cylinder from dirt and moisture for dependable performance year-round.
• Lock Up with Complete Confidence: Designed for smooth everyday use, the precision zinc alloy lock cylinder resists picking while providing reliable operation ride after ride. Includes 3 brass keys, giving you convenient backups for home, work, or travel, so you're never left locked out when it matters most.