U-Locks

The DS system is an innovative leap in design, introducing significant features and benefits over existing locking systems and cylinders. The world’s first spring free patented locking system and cylinder. No more jammed locks

Kryptonite's Keeper 12 U-Lock is like a tough nut: you just can't crack it. Thanks to the 12mm hardened steel shackle that resists cutting and leverage attacks, you get peace-of-mind while you run into the grocery store or lock up outside the coffee shop. The shackle connects to the disc-style cylinder for exceptional security, and it all sits in the click-style transportation bracket so it stays stable during transport. To top it all off, you get a reinforced collar over the keyway for added protection. Specifications & Features - 12mm HARDENED STEEL SHACKLE resist hand tools - Reinforced collar over keyway for increased protection - HIGH SECURITY DISC-CYLINDER - Includes click style TRANSPORTATION BRACKET - High security BENT FOOT DESIGN for ease of use - Protective vinyl covering - Key Safe Program

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 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.

OnGuard's Bulldog Mini is always ready for a ride. This small U-lock is as strong as larger locks, yet much 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 mini also comes with five keys, including OnGuard's Microlight key which has a built-in light.

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.

Our best selling U-lock, featuring best-in-class X2P Double Bolt lock mechanisms and super strong 13mm (0.51”) hardened steel shackles for a full circle of protection.

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.

Lighter than Brute Mini but with the advantages of X4P Locking Mechanism. Perfect for fast commuters or bike messengers who are weight sensitive.

- New hardened deadbolt anti-rotation design - Includes 2 stainless steel keys with an ergonomic design to reduce the amount of torque, and keep them from bending or breaking - Includes side mount, snap-in bracket - Disc-style cylinder with center keyway - Key Safe Program - Product dimensions: 3.25” x 6” (8.3cm x 15.2cm) - Product weight: 1.65 lbs

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")

OnGuard's PitBull Medium 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, including OnGuard's Microlight key that has a built-in light.

OnGuard's PitBull Mini LS 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, including OnGuard's Microlight key which has a built-in light.

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.

Thanks to its variants with different shackle heights, the Ultra 410K can be used in a variety of ways. The 12 mm thick round shackle made of specially hardened steel provides reliable protection for your two-wheeler at all times. With its solid construction and high-quality lock cylinder, the U-lock offers robust security, which is also confirmed by the Sold Secure Silver test seal. Thanks to the supplied SH34 holder, the U-lock can be conveniently and easily transported on your bike without any annoying rattling. In combination with the Cobra cable, the Ultra 410K can also be used to secure other components such as tyres in addition to the bike frame. The newly designed lock body casing combines improved materials with proven signal colour or is available in the Special Edition with the new Flakeberry Purple material finish.

12 mm thick round shackle made of specially hardened steel

High-quality lock cylinder for high protection against tampering, e.g. picking

The shackle, housing and structural parts of the locking mechanism are made of specially hardened steel

New, standardised lock body casing design

Colours with high recognition value

OnGuard's Brute Mini is ideal for serious protection in high-risk areas. Its massive, 16.8mm ultra-hardened-steel shackle laughs at bolt cutters and pry bars. And, OnGuard's solid X4 bolt lock boasts four steel pins that engage at both ends and a triple-reinforced steel crossbar to create a redundant, secure system for top-notch protection. This tiny, yet brawny lock comes with five keys, including one with a built-in light.

OnGuard's PitBull Mini DT is a sturdy U-lock/cable combination that defends your bicycle with 1/2-inch hardened steel, OnGuard's X4 quattro-bolt lock, and a 3/8-inch-diameter cable. This cable is 4-feet long so that you can lock up your wheels, or another bike, with ease. And thanks to the included mounting bracket the PitBull DT can go along for every ride. This lock also comes with five keys, including OnGuard's Microlight key which has a built-in light.

OnGuard's PitBull LS 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, including OnGuard's Microlight key which has a built-in light.

OnGuard offers one brute of a U-lock with their highest security Brute STD, which is ideal for serious protection in high-risk areas. Its massive 16.8mm-diameter ultra-hardened-steel shackle laughs at bolt cutters and pry bars. OnGuard's solid X4 bolt lock boasts four steel pins that engage at both ends and a triple-reinforced steel crossbar to create a redundant, secure system for top-notch protection. This lock comes with five keys, including one with a built-in light.

Thanks to its variants with different shackle heights, the Ultra 410K can be used in a variety of ways. The 12 mm thick round shackle made of specially hardened steel provides reliable protection for your two-wheeler at all times. With its solid construction and high-quality lock cylinder, the U-lock offers robust security, which is also confirmed by the Sold Secure Silver test seal. Thanks to the supplied SH34 holder, the U-lock can be conveniently and easily transported on your bike without any annoying rattling. In combination with the Cobra cable, the Ultra 410K can also be used to secure other components such as tyres in addition to the bike frame. The newly designed lock body casing combines improved materials with proven signal colour or is available in the Special Edition with the new Flakeberry Purple material finish.

12 mm thick round shackle made of specially hardened steel

High-quality lock cylinder for high protection against tampering, e.g. picking

The shackle, housing and structural parts of the locking mechanism are made of specially hardened steel

New, standardised lock body casing design

Colours with high recognition value

Thanks to its variants with different shackle heights, the Ultra 410K can be used in a variety of ways. The 12 mm thick round shackle made of specially hardened steel provides reliable protection for your two-wheeler at all times. With its solid construction and high-quality lock cylinder, the U-lock offers robust security, which is also confirmed by the Sold Secure Silver test seal. Thanks to the supplied SH34 holder, the U-lock can be conveniently and easily transported on your bike without any annoying rattling. In combination with the Cobra cable, the Ultra 410K can also be used to secure other components such as tyres in addition to the bike frame. The newly designed lock body casing combines improved materials with proven signal colour or is available in the Special Edition with the new Flakeberry Purple material finish.

12 mm thick round shackle made of specially hardened steel

High-quality lock cylinder for high protection against tampering, e.g. picking

The shackle, housing and structural parts of the locking mechanism are made of specially hardened steel

New, standardised lock body casing design

Colours with high recognition value

Thanks to its variants with different shackle heights, the Ultra 410K can be used in a variety of ways. The 12 mm thick round shackle made of specially hardened steel provides reliable protection for your two-wheeler at all times. With its solid construction and high-quality lock cylinder, the U-lock offers robust security, which is also confirmed by the Sold Secure Silver test seal. Thanks to the supplied SH34 holder, the U-lock can be conveniently and easily transported on your bike without any annoying rattling. In combination with the Cobra cable, the Ultra 410K can also be used to secure other components such as tyres in addition to the bike frame. The newly designed lock body casing combines improved materials with proven signal colour or is available in the Special Edition with the new Flakeberry Purple material finish.

12 mm thick round shackle made of specially hardened steel

High-quality lock cylinder for high protection against tampering, e.g. picking

The shackle, housing and structural parts of the locking mechanism are made of specially hardened steel

New, standardised lock body casing design

Colours with high recognition value

Thanks to its variants with different shackle heights, the Ultra 410K can be used in a variety of ways. The 12 mm thick round shackle made of specially hardened steel provides reliable protection for your two-wheeler at all times. With its solid construction and high-quality lock cylinder, the U-lock offers robust security, which is also confirmed by the Sold Secure Silver test seal. Thanks to the supplied SH34 holder, the U-lock can be conveniently and easily transported on your bike without any annoying rattling. In combination with the Cobra cable, the Ultra 410K can also be used to secure other components such as tyres in addition to the bike frame. The newly designed lock body casing combines improved materials with proven signal colour or is available in the Special Edition with the new Flakeberry Purple material finish.

12 mm thick round shackle made of specially hardened steel

High-quality lock cylinder for high protection against tampering, e.g. picking

The shackle, housing and structural parts of the locking mechanism are made of specially hardened steel

New, standardised lock body casing design

Colours with high recognition value

Kryptonite KryptoLok combination U-Lock provides 6 out of 10 protection on Kryptonite's security rating scale. A 4-digit, resettable combination allows the protection of a U-Lock with the convenience of not having to carry keys. Included FlexFrame bracket carrys the lock securely during transport. • Double Deadbolt - Strongest Combination U-Lock on the market • 12.7mm shackle • Durable easy to use dials • Includes FlexFrame bracket – same as keyed U-locks • Rotating dust cover • Easy to use 4 digit reset mechanism • Protective vinyl coating • Combo Safe Program • Product dimensions: 4” x 9” (10.2cm x 22.9cm) • Product weight: 2.9 lbs (1.32 kgs)

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 FLEXFRAME-U BRACKET providing convenient multi-location u-lock transport - Protective vinyl coating - Key Safe Program - Product dimensions: 3.25” x 7” (8.2cm x 17.8cm) - Product weight: 2.5 lbs (1.13 kgs)

Thanks to its variants with different shackle heights, the Ultra 410K can be used in a variety of ways. The 12 mm thick round shackle made of specially hardened steel provides reliable protection for your two-wheeler at all times. With its solid construction and high-quality lock cylinder, the U-lock offers robust security, which is also confirmed by the Sold Secure Silver test seal. Thanks to the supplied SH34 holder, the U-lock can be conveniently and easily transported on your bike without any annoying rattling. In combination with the Cobra cable, the Ultra 410K can also be used to secure other components such as tyres in addition to the bike frame. The newly designed lock body casing combines improved materials with proven signal colour or is available in the Special Edition with the new Flakeberry Purple material finish.

12 mm thick round shackle made of specially hardened steel

High-quality lock cylinder for high protection against tampering, e.g. picking

The shackle, housing and structural parts of the locking mechanism are made of specially hardened steel

New, standardised lock body casing design

Colours with high recognition value

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: - 12.7mm hardened PERFORMANCE STEEL SHACKLE - New 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 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: 2.9 lbs (1.32 kgs)

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: 3.25” x 7” (8.2cm x 17.8cm) - Product weight: 3.25 lbs (1.47 kgs)

• 14mm round shackle
• Hardened lock body
• Double-bolt locking
• USH Bracket (for 24-35mm tubes)
• Sold Secure Gold approval
• Improved design reduces potential for rattling

• 14mm round shackle
• Hardened lock body
• Double-bolt locking
• USH Bracket (for 24-35mm tubes)
• Sold Secure Gold approval
• Improved design reduces potential for rattling
• Cobra Loop 10mm x 120cm cable (47.24”)