- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 4.5x9"

If you dread keys, the Shackleton is the ticket. You can program in your own four digit code for easy opening each time. Silicone overmold and quick, push-button release shackle will protect your bike in most environments. Product Features: - Security level 5 - Silicone overmold and frame mount included - Shackle size: 96mm x 167mm - Keyless combination wheels - Program your own four digit code - Weight: 2 lbs

- 14mm hardened MAX-Performance steel shackle resists both cutters and leverage attacks - Double deadbolt locking mechanism has extensive holding power - High security, disc-style cylinder with reinforced anti-drill, anti-pull protection system - Sliding dust cover protects and extends cylinder life - 3 stainless steel keys—one lighted with high-intensity bulb & replaceable battery - Key Safe Program - Product dimensions: 1.8” x 2.1” (48mm x 54mm) - Product weight: 1.85 lbs (0.84 kgs)

Kryptonite's New-U New York Fahgettaboudit Mini is simply the strongest lock money can buy. Its 10/10 security rating makes it the best choice for quick stops or overnight security in major metropolitan areas, college campuses...pretty much anywhere! Bike thieves can just Fahgettaboudit. Specifications & Features: - 18mm hardened MAX-PERFORMANCE STEEL SHACKLE - Patent-pending HARDENED DOUBLE DEADBOLT design gives additional protection against twist and cut attacks - Patented STEEL SLEEVE over cross bar for double security - HIGHEST SECURITY DISC-STYLE CYLINDER is pick and drill resistant - Sliding dustcover to PROTECT FROM DIRT AND DEBRIS 3 STAINLESS STEEL KEYS - including new design and one LED REPLACEABLE KEY FOB - Key Safe Program - Protective vinyl coating - Product dimensions: 3.25” x 6” (8.3cm x 15.3cm) - Product weight: 4.55 lbs (2.06 kgs)

OnGuard's Bulldog Mini DT is always ready for a ride. This small U-lock/cable combination is strong, compact, and smart. The 13mm-thick hardened-steel shackle and OnGuard's stout X2 double-bolt lock resists drilling, picking, bumping, and pulling for serious security. Plus, the 4-foot-long cable lets you lock both wheels and accessories with ease, too. The Mini includes a mount for carrying it on your bike and fits in a pack, too. This mighty mini also comes with five keys, including OnGuard's Microlight key which has a built-in light.

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 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.

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.

- 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

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)

The safe alarm system for your bicycle A lock is good; a lock with an alarm system is even better. With 100 decibels, the 440A padlock will send every thief running. We protect our most valuable possessions with an alarm system. So why not our bike? Our padlock 440 Alarm is equipped with the proven 3D Position Detection System, which registers even the smallest movement. If a thief tampers with your bicycle, the lock sounds the alarm immediately. And at a volume that discourages: 100 decibels is as loud as a circular saw and can be heard from afar. An alarm like that will scare off any bike thief. Technology: - Hardened 15/32" round shackle - The shackle, the body and the load-bearing parts of the locking mechanism are manufactured using specially hardened steel - Special, modern design of the lock body casing allows for optimum handling - High-quality locking cylinder for high protection against manipulation, e.g. picking - Alarm at a volume of at least 100 dB for 15 seconds, followed by automatic reactivation - 3D Position Detection – detects vibrations and the smallest of movements in all three dimensions and triggers an alarm - CR2 batteries included

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

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

- Defender ring lock with E-bike battery lock - The ring lock has maximum security with plug in option - Hardened steel bracket and lock housing - Anti drilling plate in cylinder - Online key service - 720 grams/181 grams

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")

- 12mm hardened performance steel shackle - New hardened double deadbolt design with anti-rotation to resist against twist attacks - Disc style cylinder with center keyway - Includes side-mount snap-in bracket - Includes 4' flex cable for securing front wheel or other accessories - Includes 2 stainless steel keys with an ergonomic design to reduce torque and keep them from bending or breaking - Key Safe Program - Product dimensions: 4” x 8” (10.2cm x 20.3cm) - Product weight: 2.40 lbs (1.09 kgs)

GRANIT™ XPLUS™ 540 PLAY IT SAFE! The highest level of security from the ABUS range: The GRANIT XPlus™ 540 U-Lock offers the best protection against theft for your bicycle Specially hardened steel, power cell technology for protection against impact and attempts to force open the lock, XPlus cylinder for the greatest protection against tampering: The GRANIT XPlus™ 540 U-Lock combines the highest-quality materials with the latest technology for protection against theft! It is a first-class lock which protects your bicycle when the risk of theft is high. Various quality seals demonstrate the value of the GRANIT XPlus™ 540 U-Lock: It is VdS approved and has received seals of approval from institutes in Russia, the Netherlands, Finland, Sweden, Denmark, Norway and the United Kingdom. - 33/64" hardened square shaft parabolic shackle - ABUS power cell technology offers the highest level of protection against impacts and attempts to break open the lock - The shackle, housing and the structural parts of the locking mechanism are made of specially hardened steel - ABUS XPlus cylinder for the highest level of protection against tampering, e.g. picking - Automatic keyhole cover to protect against dirt and corrosion

Compact and lightweight, ABUS' high-security Granit Plus 640 U-Lock is capable of locking around reinforced parking meters. The 640 features a 12mm special hardened-steel round shackle that retains its flexibly to offer great protection again crowbar attacks. The upgraded locking mechanism bolts 4 times into the lock body (2 times per shackle side) to provide excellent protection against twisting/torsion/cutting attacks, while still offering great feel and comfort when locking. - Excellent corrosion resistance - Shackle double bolts in lock body - Shackle, case and supporting elements of the locking mechanism are made of special hardened steel - Very intensive use of special weight-optimized alloy and light materials - Soft-touch coating feels good in the hand and protects paint job from damage - ABUS Plus cylinder offers high protection against picking - ABUS Code Card provided for easy key replacement, re-ordering - Mechanism Type: Key - Diameter: 12 mm - Shackle Shape: Round - Shackle Height: 230 mm - Shackle Width Inner: 8.3 cm - 2 keys are supplied with the lock - 1 LED-lighted key are supplied with the lock

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

- Single bolt locking mechanism - 13mm hardened steel shackle - Multi position mounting bracket included - User resettable combination - Length: 4x9" - Type: STD w/ 4x10mm cable

The Sunlite U-Steel Lock features a 14mm hardened steel shackle with matte black silicone anti-scratch coating. Its small size is easy to carry in a bag or on bike. - 3 keys included - Shackle Diameter: 14mm - Length: 3 x 5" / 7.62 x 12.7cm - Shackle Type: Mini

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

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