Full-Size U-Lock for Confident Daily Parking
The Abus Ultra 410K U-Lock (170 x 230 mm) is a solid everyday security upgrade for city riding, campus use, and regular lock-ups around town. The 12 mm round shackle is made from specially hardened steel, as are the lock body and internal parts, giving you dependable resistance to common cutting and twisting attacks.
Its taller 6.7" x 9" internal opening makes it easier to secure your frame and a wheel to racks, posts, and railings without wrestling the bike into position. The included SH34 frame bracket carries the lock quietly on your bike, so it is always ready when you pull up to the rack.
Simple. Solid. Reliable.
- 12 mm hardened round shackle and lock body provide strong protection against basic bolt cutters and leverage tools.
- Double-bolt locking mechanism secures both sides of the shackle for better resistance to twisting and prying.
- High-quality lock cylinder offers robust protection against tampering and picking.
- Full-size 170 x 230 mm internal dimensions make it easier to reach awkward racks and fixed objects.
- SH34 frame bracket mounts to 24–35 mm tubes for stable, low-rattle transport on the bike.
- Sold Secure Silver–approved for use in moderate- to higher-risk parking when locked correctly.
- Durable black coating helps protect your frame from scratches and shrugs off daily wear.