Shop for bulldog std u lock

The OnGuard Pitbull STD DT U-Lock delivers layered bike security by combining a heavy-duty 14 mm (0.55 in.) hardened steel U-lock with a flexible 4 ft. vinyl-coated security cable. The X4P Quad Lock mechanism secures the shackle on 4 sides to resist cutting, prying, twisting, and leverage attacks in medium- to high-risk environments. The included cable allows riders to secure additional components such as wheels, seats, or accessories, creating a versatile double-locking system for bikes, E-bikes, and scooters. Rubber-coated shackle sleeves and a co-molded crossbar help protect frames from scratches. Includes 5 precision laser-cut keys, and a universal mounting bracket for convenient transport. Color: Black.

The OnGuard Bulldog Combo STD U-Lock delivers convenient key-free security for urban cyclists who want strength and simplicity in 1 dependable lock. Its 13 mm hardened steel shackle helps resist cutting and leverage attacks, while the X2P Double Bolt mechanism secures both sides of the shackle to improve resistance against twisting and prying. A user-settable 4-digit combination provides quick access without the need for keys, making it ideal for daily commuters and campus riders. The rubber-coated crossbar and rounded edges help protect your bike's paint and finish from scratches during use and transport. Designed for reliable everyday performance, this lock balances portability, durability, and practical security for urban environments. Includes an all-tube mounting bracket for easy on-bike storage and quick access. Dimensions: 115 x 230 mm (4.53 x 9.06 in.). Color: Black.

The OnGuard Bulldog Combo STD DT U-Lock provides dependable keyless protection for cyclists who want strength, flexibility, and everyday convenience. Its 13 mm hardened steel shackle helps resist cutting and leverage attacks, while the included 4 ft vinyl-coated braided steel cable adds versatility to secure both frame and wheels. The X2P Double Bolt mechanism locks both sides of the shackle to improve resistance against twisting and pulling attacks. A user-settable 4-digit combination system allows quick access without carrying keys. Rubber coatings help protect bike paint and finishes from scratches during transport or locking. Designed for commuters and daily riders, the Bulldog Combo STD DT offers balanced security and convenience for medium-risk urban environments. Includes an all-tube mounting bracket for easy on-bike storage. Dimensions: 115 x 230 mm (4.53 x 9.06 in.). Color: Black.

The OnGuard Bulldog LS U-Lock delivers strong, extended-length protection for cyclists who need more locking versatility without added weight. Its 13 mm hardened steel shackle resists cutting, prying, and leverage attacks, while the X2P Double Bolt system locks both sides of the shackle to defend against twisting and pulling. A Z-Cylinder core provides anti-bumping and anti-drilling reliability, and the rubber-coated crossbar protects your bike, AOS paint and finish. The extended shackle size offers extra reach for securing to larger racks or posts. Includes 5 laser-cut keys and a universal mount bracket. Dimensions: 115 x 292 mm (4.53 x 11.50 in.). Color: Black.

The OnGuard Bulldog Medium U-Lock delivers strong everyday protection in a compact size designed for urban riders and commuters. Its 13 mm hardened steel shackle helps resist cutting, prying, and leverage attacks, while the X2P Double Bolt mechanism locks both sides of the shackle for added strength and stability. The advanced Z-Cylinder core provides resistance against bumping, drilling, and picking attempts for dependable long-term performance. Protective co-molded crossbar covers and rubber coatings help protect bike frames and finishes from scratches while molded end caps absorb impacts. Designed for practical city use, the Bulldog Medium balances portability and security. Includes 5 laser-cut keys and a universal mounting bracket for convenient on-bike storage. Dimensions: 90 x 175 mm (3.55 x 6.90 in.). Color: Black.

The OnGuard Bulldog Mini LS U-Lock delivers high-level security and versatile reach for serious cyclists. Its long shackle design provides extra flexibility for securing frames and wheels to larger posts or rails, while the 13 mm hardened steel resists cutting, sawing, and leverage attacks. Featuring the X2P Double Bolt system that locks both sides of the shackle and the Z-Cylinder core that helps prevent drilling and bumping, it, AOS built for demanding urban environments. Rubber coatings help protect your bike, AOS paint and finishes, while the compact yet extended design balances portability with strong theft protection. Includes 5 precision laser-cut keys and a universal mounting bracket for convenient transport. Dimensions: 90 x 240 mm (3.55 x 9.46 in.). Color: Black.

The OnGuard Bulldog Mini U-Lock delivers full-size Bulldog strength in a compact, travel-friendly design for urban riders. Crafted from 13 mm hardened steel, it resists cutting, leverage, and prying while the X2P Double Bolt Mechanism secures both sides of the shackle for maximum holding power. The advanced Z-Cylinder core defends against drilling, picking, and bumping attacks. Its co-molded crossbar cover and rubber coating safeguard bike finishes, and the compact locking area provides reliable protection without extra weight. Ideal for commuters, couriers, and e-bike owners seeking portability and performance. Includes 5 laser-cut keys plus a universal mounting bracket for on-the-go storage and quick access. Dimensions: 90 x 140 mm (3.55 x 5.52 in.). Color: Black.

The OnGuard Bulldog STD LM U-Lock is built for durability and convenience, balancing a strong 13 mm hardened steel shackle with a practical mid-size locking area. The X2P Double Bolt mechanism secures both sides of the shackle to resist pulling and prying, while the Z-Cylinder core helps prevent bumping, drilling, and picking attempts. Rubber-coated crossbar surfaces protect your bike's paint from scratches, and the versatile shackle size makes it easy to secure bikes to racks, posts, and railings in urban environments. Includes 5 laser-cut keys and a universal mounting bracket for convenient on-bike storage. Dimensions: 115 x 230 mm (4.53 x 9.06 in.). Color: Black.

The OnGuard Bulldog STD U-Lock delivers dependable everyday security for commuters and city cyclists. Its 13 mm hardened-steel shackle resists cutting and leverage attacks, while the X2P Double Bolt mechanism secures both sides of the shackle for enhanced strength. The Z-Cylinder core protects against picking, drilling, and bumping for long-term reliability. A rubber-coated crossbar and endcaps help protect your bike, AOS paint from scratches, and the included mount bracket makes carrying easy. Includes 5 laser-cut keys. Dimensions: 115 x 230 mm (4.53 x 9.06 in.). Color: Black.

The OnGuard Bulldog STD U-Lock with 4 ft. Cable offers everyday riders enhanced security and flexibility. Its 13 mm hardened steel shackle resists cutting, prying, and leverage attacks, while the X2P Double Bolt mechanism locks the shackle on both sides for extra stability. The Z-Cylinder core resists picking, drilling, and bumping, ensuring long-term reliability. Protective co-molded covers and rubber coatings help prevent scratches on your bike, AOS frame and components. Includes 5 precision laser-cut keys and a 4 ft. vinyl-coated cable for securing wheels and frame simultaneously. Dimensions: 115 x 230 mm (4.53 x 9.06 in.). Color: Black.