U-Locks

When security is your priority, the Serfas U-Lock has you covered. Its hardened steel and double dead bolt construction keep your bike safe, while a durable rubber coating protects your finish. It even includes a mounting bracket so you'll never leave home without it.

Constantly improving. Kryptonite's New-U generation of U-Locks features a patent-pending double deadbolt design, anti-rotation capability, sliding dust covers, and an updated, modern design. The KryptoLok has a security rating of 6/10 making it a great choice for quick urban stops or longer suburban stops. Specifications & Features: - 6/10 security rating - 12.7mm hardened PERFORMANCE STEEL SHACKLE - Patent-pending HARDENED DOUBLE DEADBOLT DESIGN gives additional protection against twist attacks - HIGH SECURITY DISC-STYLE CYLINDER is pick and drill resistant - Includes 2 STAINLESS STEEL KEYS, with ergonomic design to reduce the amount of torque, and keep them from bending or breaking - Includes 4’ KRYPTOFLEX DOUBLE LOOPED CABLE for securing front wheel or accessories - Includes FLEXFRAME-U BRACKET providing convenient multi-location u-lock transport - Protective vinyl coating - Key Safe Program - Product dimensions: 4” x 9” (10.2cm x 22.9cm) - Product weight: 3.65 lbs (1.66 kgs)

OnGuard's Bulldog STD boasts an 13mm-thick hardened-steel shackle and OnGuard's stout X2 double-bolt lock that resists drilling, picking, bumping, and pulling for serious protection. And, thanks to the included mounting bracket you can bring the Bulldog along for every ride. This great U-lock also comes with five keys, including OnGuard's Microlight key, which has a built-in light. - All OnGuard locks feature integrated covers for protection from moisture and dirt. - OnGuard locks feature plastic, rubber, or vinyl at all contact points to protect your bike's finish. - Shackle Dimensions: 115mm x 230mm (W x H x Dia.) (4.53" x 9.06") x 13mm (0.51") D

OnGuard's Bulldog Combo STD will guard your bike day and night. It boasts a 13mm-wide hardened-steel shackle and OnGuard's stout X2P Double Bolt design that resists drilling, picking, bumping, and pulling for serious protection. This Bulldog sports a resettable 4-digit combination plus a mounting bracket so you can bring the lock along for every ride.

OnGuard's Bulldog DT pairs a tough-as-nails U-lock with a sturdy steel cable for increased security. The 13mm hardened steel shackle resists cutting, and OnGuard's stout X2 double-bolt lock mechanism is pick, drill, bump, and pull-resistant. The 9" shackle, combined with 4' braided steel cable lets you lock bike to a standard parking meter post without removing your front wheel, making lock-up faster, easier, and more secure. This great U-lock also comes with five keys, including OnGuard's Microlight key which has a built-in light. - All OnGuard locks feature integrated covers for protection from moisture and dirt. - OnGuard locks feature plastic, rubber, or vinyl at all contact points to protect your bike's finish. - Shackle Dimensions: 115mm x 230mm (W x H x Dia) (4.5" x 9") x 13mm (0.51") D - Cable Dimensions: 120cm x 10mm (4' x 0.39")