U-Locks

Protect your bike with Giant's SureLock Protector Std 1 U-Lock. It boasts a heat-treated, hardened-steel shackle that's a half-inch thick and 9 inches long, as well as a pick and drill-resistant keyed lock. This tough lock includes five laser-cut keys, one of which includes an LED light. Plus, it's vinyl coated so it won't scratch your bike and it comes with a handy carrying bracket that fits almost any bike tube so you'll never have to leave your lock behind.

Protect your bike with Giant's SureLock Protector 2 STD U-Lock. It boasts a heat-treated, hardened-steel shackle that's a half-inch thick and 11.5 inches long, as well as a pick and drill-resistant keyed lock. The extra-length lets you lock your bike to extra-thick posts or include wheels in one securely locked package. This tough lock includes five laser-cut keys, is vinyl coated so it won't scratch your bike, and comes with a handy carrying bracket that fits almost any frame so you'll never have to leave your lock behind.

Protect your bike with Giant's SureLock Protector 2 STD U-Lock. It boasts a heat-treated, hardened-steel shackle that's a half-inch thick, as well as a pick and drill-resistant keyed lock. This tough lock is reinforced and includes five laser cut keys for total security. It's vinyl coated so it won't scratch your bike and it comes with a handy carrying bracket that fit almost any bike tube so you'll never have to leave your lock behind.

- Hardened steel bracket and lock housing - Anti drilling plate in cylinder - Flexible fixing set also for odd sized frames - Online key service - Maximum security with plug in option - 720 grams

- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Mounting bracket included - 2 laser cut keys - Length: 3.5x7"

Technology Features industry leading corrosion resistance. 14mm round shackle Lightweight with excellent strength to weight ratio Double bolting shackle in the lock body Shackle, lock body and supporting elements made of special temper hardened steel ABUS Premium Cylinder offers great protection against picking Two keys supplied with the lock Soft-touch cover protects frame *U-Lock comes with additional 10mm /4.6' Cobra cable

OnGuard's PitBull STD is a sturdy U-lock that defends your bicycle with 1/2-inch hardened steel and OnGuard's X4 quattro-bolt lock. And thanks to the included mounting bracket the PitBull will be along for every ride. This lock also comes with five keys plus OnGuard's Microlight key, which has a built-in light.

Keep your bike safe! OnGuard's Bulldog ATB boasts 1/2-inch hardened-steel construction and OnGuard's stout X2 double-bolt lock that resists picking, drilling, bumping, and pulling for serious protection. It also features a wide shackle, making it ideal for bigger framed bikes. And thanks to the included mounting bracket you can bring the Bulldog ATB along for every ride. This great U-lock also comes with five keys, including OnGuard's Microlight key which has a built-in light.

OnGuard's Bulldog LS (Long Shackle) offers a large locking zone, plus OnGuard's high-security 13mm-thick hardened-steel construction and stout X2 double-bolt lock, which resists cutting, picking, bumping, and drilling. And with the included mounting bracket, your Bulldog can come along for every ride. This great U-lock also comes with five keys, including OnGuard's Microlight key which has a built-in light.

- Single bolt high security mechanism - 12mm hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 4.5x7.85"

Featuring a simple, strong, and aggressive design, ABUS' Ultra 410 is the ideal entry-level U-lock. It's simple design conceals a number of high-tech advancements in security. The 12mm double-bolting, temper-hardened steel shackle extends all the way through the lock body, providing excellent protection against cutting and torsion attacks in a simple yet innovative design. The addition of the Cobra Cable adds security and versatility. - Innovative soft-touch housing cover prevents damage to paint - Pass-through shackle provides anti-twist protection - Easy-to-mount SH 34 bracket mounts easily to frames with a 24-35mm diameter - Double-layered cylinder with special wafers and additional decoy cuttings protects against picking - Mechanism Type: Key - Diameter: 12 mm - Shackle Shape: Round - Shackle Height: 180 mm - Shackle Width Inner: 10 cm - 2 keys are supplied with the lock

Featuring a simple, strong, and aggressive design, ABUS' Ultra 410 is the ideal entry-level U-lock. It's simple design conceals a number of high-tech advancements in security. The 12mm double-bolting, temper-hardened steel shackle extends all the way through the lock body, providing excellent protection against cutting and torsion attacks in a simple yet innovative design. - Innovative soft-touch housing cover prevents damage to paint - Pass-through shackle provides anti-twist protection - Easy-to-mount SH 34 bracket mounts easily to frames with a 24-35mm diameter - Double-layered cylinder with special wafers and additional decoy cuttings protects against picking - Mechanism Type: Key - Diameter: 12 mm - Shackle Shape: Round - Shackle Height: 230 mm/300 mm - Shackle Width Inner: 11.8 cm - 2 keys are supplied with the lock

OnGuard's Bulldog Medium DT is always ready for a ride. This U-lock is as strong as larger locks, yet more compact. The 13mm-thick hardened steel and OnGuard's stout X2 double-bolt lock resist cutting, picking, pulling, bumping, and drilling. And, the included 4-foot steel cable is long enough that you can lock both wheels without removing them from the frame. This mighty lock also comes with five keys, including OnGuard's Microlight key which has a built-in light.

ABUS' U-locks offer strength, durability and protection you can count on. The Buffo 34 U-Lock boasts a 12-mm thick, hardened steel shackle and a hardened lock body to keep your bike safe and sound. Its reversible key is easy to use and you can carry the Buffo on your bike with the included bracket.

- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 4.5x11.5"

Popular shackle length with X2P Double Bolt protection combined with improved user-settable steel ball click-combo lock system with included 4 foot fully coated, braided steel cable for more locking options.

Convenience and security of BullDog Combo Mini with included 4 foot fully coated, braided steel cable for more locking options. Shackle Dimensions: 90mm x 140mm x 13mm (W x H x Diam) Cable Dimensions: 120cm x 10mm

Bike security gets smart. The use of innovative technology, combined with maximum mechanical security, makes the 770A SmartX the most secure bike lock in its class. Enjoy the benefits of the innovative SmartX cylinder and make your iOS or Android smartphone your individualized key. Combined with the proven 100dB alarm, this lock offers maximum security for high-quality E-bikes and load-carrying bicycles. - 13mm hardened square shaft parabolic shackle - SmartX locking system with Bluetooth – high-quality, keyless locking offers user-friendly operation - Alarm function with at least 100 dB for 15 seconds followed by automatic reactivation - 3D Position Detection – detects vibrations and the smallest movement in all three dimensions and triggers the alarm - Smart alarm – the lock only emits a small warning beep in the event of minor and brief vibrations, e.g. if a football bounces nearby - USB-C port - App connection - Location storage of the bike's last parking location - ABUS power cell technology offers the highest level of protection against impacts and attempts to break open the lock - The shackle, the housing and the locking mechanism's load-bearing parts are manufactured from specially hardened steel - Security Level: 15 - Locking type: key - Carrier: USH with bracket - Length: 9-inch

We designed the Maddox for use in big cities and college campuses, to keep your ride safe and secure. The shackle and body are coated to protect your bike, and the included frame mount features a push-button release to let you know the lock is secure when riding. Product Features: - Security level 5 - Frame mount included - Shackle size 113mm x 190mm - 3 keys included - Weight: 2 lb 2 oz

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

- Single bolt high security mechanism - 12mm hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 4.5x7.85"

Trust your bike with Sunlite's Standard U-Lock. Its hardened shackle is super strong. Three keys and a carrying bracket are included, and the soft coating won't scratch your frame.

- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 5x9"

- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Mounting bracket included - 2 laser cut keys - Length: 3.5x7"

The Ultra Mini 410 U-Lock is compact and combines high-quality materials with intelligent locking technology. What features does it have to protect against theft? A 12mm thick rounded shackle which is made of specially hardened steel – just like the body and structural parts of the locking mechanism. Combined with a high-quality locking cylinder which offers superb protection against tampering such as picking thanks to "double locking", the Ultra Mini 410 U-Lock is a reliable companion when you are out on your high-end bicycle. The lock passed the ice spray test with flying colors. Technology: - Hardened 15/32" round shackle - The shackle, body and the structural parts of the locking mechanism are made of specially hardened steel - The special, modern design of the lock body casing allows for optimum handling - High-quality locking cylinder for a high level of protection against tampering, e.g. picking Operation and use: - Good protection at medium theft risk - Recommended for securing good bicycles - The longer the shackle, the easier the bicycle can be locked to a fixed object

Protect your bike with Giant's SureLock Protector 2 STD U-Lock. It boasts a heat-treated, hardened-steel shackle that's a half-inch thick, as well as a pick and drill-resistant keyed lock. This tough lock includes five laser cut keys for convenience. The lock is vinyl coated so it won't scratch your bike and it comes with a handy carrying bracket that fits almost any bike tube so you'll never have to leave your lock behind.

The Ultimate 420 radiates a feeling of security through its appearance alone. There are locks, and then there is the Ultimate 420. If you are looking for a shackle lock that will deter potential thieves just by looking at it, then you don't have to look far. Thirteen millimeters of hardened special steel and aggressive coloring make it immediately clear to any bicycle thief that they have no chance here. At the same time, the Ultimate 420 is so compact that you can easily stow it. It finds its place in every backpack and bag so it's always with you when you need to secure your valuable bicycle. - Hardened 13mm round shackle - The shackle, housing, and supporting parts of the locking mechanism are made of specially hardened steel - Special modern design of the lock body sheathing enables optimum handling - High-quality locking cylinder for high protection against manipulation, e.g. picking - Length: 5.5-inch

Protect your bike with Giant's SureLock Protector LS U-Lock. It boasts a heat-treated, hardened-steel shackle that's a half-inch thick, as well as a pick and drill-resistant keyed lock. It's 11.5 inches long, so you have room to add a wheel or your helmet. This tough lock includes five laser-cut keys, one of which features a powerful LED light. The shackle is vinyl coated so it won't scratch your bike and it comes with a handy carrying bracket that fits almost any bike tube so you'll never have to leave your lock behind.

OnGuard's Bulldog Medium is always ready for a ride. This U-lock is as strong as larger locks, yet more compact. The 13mm-thick hardened steel and OnGuard's stout X2 double-bolt lock resist cutting, picking, pulling, bumping, and drilling. And you can carry it on your bike with the included bracket, or easily stow it in a pack or even your pocket. This mighty lock also comes with five keys, including OnGuard's Microlight key which has a built-in light.

- Single bolt high security mechanism - 12mm hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 5x9"