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Locks/Security

Check out all our bike locks and security accessories for sale at South Shore Cyclery in Milwaukee

Protect your bike from theft and tampering with heavy-duty locks and security accessories. South Shore Cyclery offers a wide range of cable locks, U-locks, frame locks, and folding locks. There are also battery locks and security nuts to keep your bike's smaller components safe.

Jump directly to any of our bike accessories categories:

$4.99
Planet Bike's Seat Leash tethers your saddle to your bike frame, adding an extra hurdle for potential thieves. It's 24 inches long and 2.5mm in diameter. The entire cable is also plastic coated to protect your bike's finish.
$4.99
Planet Bike's Wheel Tether is the perfect complement for your U-lock (sold separately). It secures your front wheel and weighs half as much as ordinary accessory cables. The 31-inch-long, 5mm-diameter Wheel Tether is a great way to safeguard your seat and accessories, too. And, it can be used alone with a padlock for security in low-crime areas.
$9.99
Ever wish your cable was longer so that you could lock up your bike and accessories? The Akita Cable has loops on each end allowing it to act as an extension for any other lock. These cables are made from some of the thickest, toughest and most flexible steel in the industry, so you can lock up anything you want and walk away with peace of mind.
$12.99
Ever wish your cable was longer so that you could lock up your bike and accessories? The Akita Cable has loops on each end allowing it to act as an extension for any other lock. These cables are made from some of the thickest, toughest and most flexible steel in the industry, so you can lock up anything you want and walk away with peace of mind.
$49.99
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")
$39.99
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.
$24.99
OnGuard's Doberman is a strong self-coiling steel cable secured with OnGuard's stout X2 double-bolt lock, which resists picking, drilling, and cutting. The cable has a tough vinyl cover which protects your bike. For convenience, the Doberman comes with a mounting bracket so you can carry the lock on your bike. And you get five keys, including OnGuard's Microlight key which has a built-in light.
$14.99
OnGuard's Terrier is a compact, lightweight cable lock perfect for low-risk areas. It features a resettable 4-digit lock, so you don't have to worry about forgotten keys. The raised dials are easy to use with gloves, a Velcro strap keeps the lock neat so it fits in a pocket, and the vinyl coating protects finishes. Lock up your bike during quick coffee runs or secure your snowboard to the rack—you'll find a million uses for this versatile little lock!
$10.95
Lock your bike's quick-release components with Kryptonite's 4-foot long Keeper 512 Combination Cable. It's a 5mm braided steel cable that offers increased cut resistance and features a pre-set combination closure. The vinyl coating protects bikes and equipment from scratches, too.
$11.99 $18.95 37% Off
The KryptoFlex 1004 Double Loop Cable is a 3/8-inch braided steel cable providing increased cut resistance. The double loops are for use with U-locks, disc locks and padlocks. The vinyl coating protects bikes and equipment from scratches. It includes the Hook-n-Loop strap for easy carrying. The KryptoFlex 1004 Looped Cable is 3/8-inch x 4-feet.
$13.99 $23.95 42% Off
The KryptoFlex 1007 Double Loop Cable is a 3/8-inch braided steel cable providing increased cut resistance. The double loops are for use with U-locks, disc locks and padlocks (sold separately). The vinyl coating protects bikes and equipment from scratches. It includes the Hook-n-Loop strap for easy carrying. The KryptoFlex 1007 Looped Cable is 3/8-inch x 7-feet.
$103.99
Specifications & Features: - 7/10 security rating - KRYPTONITE’S LIGHTEST WEIGHT U-LOCK OPTION at 730 grams 39% lighter than the Evolution Mini-5 - 11mm hardened New MAX-PERFORMANCE STEEL SHACKLE material allows reduction of shackle diameter while maintaining the performance standards of the Evolution Mini-5, Mini-7 & Mini-9 - NEW patent pending BENTFOOT DOUBLE DEADBOLT DESIGN - HIGHER SECURITY DISC-STYLE CYLINDER is pick and drill resistant - REINFORCED CUFF over crossbar and cylinder for extra security - 3 Stainless Steel keys — including new key design and one LED REPLACEABLE KEY FOB - Key Safe Program - Product dimensions: 2.75” x 6” (7cm x 15.2cm) - Product weight: 1.60 lbs (.73 kgs)
$43.95
- 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
$45.99
- 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: 4” x 8” (10.2cm x 20.3cm) - Product weight: 2.05 lbs
$63.99
- 12.7mm hardened high-grade performance alloy steel shackle resists hand tools - New hardened double deadbolt engages both shackle-ends increasing holding power - Patented new "pass-thru" crossbar design includes anti-rotation features providing advanced protection against twist and single cut attacks - Includes FlexFrame-U bracket providing convenient multi-location u-lock transport - Includes 2 stainless steel keys with an ergonomic design to reduce torque and keep them from bending or breaking - New sliding dustcover - Reinforced hardened crossbar design provides more protection for the lock internals - Key Safe Program - Product dimensions: 3.25” x 7” (8.2cm x 17.8cm) - Product weight: 2.5 lbs (1.13 kgs)
$66.99
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)
$153.95
The New U, the U-Lock redesign from Kryptonite, features expanded double-deadbolt security, anti-rotation capability, and a fresh new design, all making life quite a bit harder for the bike thieves of the world. The New York Lock Standard LS is the perfect choice for bike security in major metropolitan areas and college campuses, and the long shackle design gives you more options when it comes to locking up your bike. Specifications & Features: - 9/10 security rating - 16mm hardened MAX-PERFORMANCE STEEL SHACKLE - Patent-pending HARDENED DOUBLE DEADBOLT design gives additional protection against twist and cut attacks - 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: 4" x 10.25" (10.2cm x 26cm) - Product weight: 4.85 lbs. (2.20 kgs)
$18.99
Kryptonite's Transit FlexFrame U-Bracket makes it easy to carry your U-lock on your bike so it's always handy. This simple mount fits on frame tubes from 25 to 80mm in diameter and it accepts most 13 and 16mm-diameter round-shackle U-locks. Plus, the clamp rotates so you can perfectly align the lock with your bike to keep it tucked out of the way.
$19.99
- Extra security against theft - 5mm hex CrMo axle
$31.99
Secure - Prevents theft instead of standard 9 mm quick-release skewers Quick Assembly - Use proprietary key on frame dropout Construction - Stainless springs with chromoly axle
$14.99 - $22.99 $14.99 - $24.99 Up to 8% Off
Protect your stuff or it's gone. We don't care how nice the neighborhood looks. Use the ABUS 1200 Combo Lock. It's 3.5-feet long and resists prying and cutting for maximum protection wherever you park. This serious chain is wrapped in a durable cover to keep your bike's finish safe and the combination can easily be set to any number you want. Hint: don't use 1234. - Diameter: 4mm
$144.99
BORDO™ 6000K FOCUS ON SECURITY, HANDLING AND FLEXIBILITY Place your trust in the quality of a classic model: The BORDO™ 6000K folding lock offers good theft protection in an easy to use package. The BORDO 6000K Folding Lock features six 5 mm steel bars connected with special drill resistant rivets, which fold together into an easy to transport package. This is familiar territory for ABUS – the locks in the ABUS Bordo family have gained a reputation as true classics whose functionality has nevertheless yet to be surpassed. This is a variant that can be opened by one key. Made of specially hardened steel, the bars and housing offer high resistance. At the same time, the high-quality ABUS XPlus cylinder provides particularly high protection, e.g. against picking. The soft coating provides protection against paint scratches. It also makes the lock easy to grip. The "Made in Germany" quality has garnered international awards. - 5 mm bars with extra-soft yet resistant coating to prevent damage to paintwork - The bars and lock body are made of specially hardened steel - Bars are connected by special drill resistant rivets - ABUS XPlus cylinder for extremely high protection against manipulation, e.g. picking - SH holder incl.
$89.99
Boasting a total weight of 440g and a compact design, the BORDO Lite 6055 is a lithe athlete compared to other locks. The BORDO Lite 6055 Folding Lock resembles its older siblings from the BORDO family in that its mechanical properties guarantee a high level of security, flexibility, and compactness. Weighing in at a mere 440g, the BORDO Lite 6055 folding lock is the flyweight of the family. Its folded-out length of 60cm is more than enough to secure a single bicycle. - Special steel design with color-coordinated plastic casing to prevent damage to the bike's paint - The bars and housing are manufactured using particularly lightweight materials and steel alloys - Bars connected with special rivets - High-quality automatic cylinder - Perfect security-to-weight ratio
$64.99 - $69.99
-5 mm bars with a core of light steel and synthetic coating to prevent damage to the bicycle‘s paintwork -The bars and the lock body are made of particularly light materials and ferrous alloy -Bars are linked with special rivets -Premium automatic cylinder -The Bordo Lite Mini fits perfectly into jersey pocket
$69.99
At just 440g, the BORDO Lite 6055C Mini is a lightweight lock that offers the perfect security-to-weight ratio. Due to its small size, the BORDO Lite Mini easily fits into jersey pockets. And, thanks to the individually configurable digit code, you no longer have to take an additional key with you during bike rides. - Special steel design with color-coordinated plastic casing to prevent damage to the bike's paint - The bars and housing are manufactured using particularly lightweight materials and steel alloys - Bars connected with special rivets - Two-component number tumblers guarantee long-term readability of the digits - Individually configurable code - Perfect security-weight ratio
$69.99
At just 440g, the BORDO Lite 6055C Mini is a lightweight lock that offers the perfect security-to-weight ratio. Due to its small size, the BORDO Lite Mini easily fits into jersey pockets. And, thanks to the individually configurable digit code, you no longer have to take an additional key with you during bike rides. - Special steel design with color-coordinated plastic casing to prevent damage to bike's paint - The bars and housing are manufactured using particularly lightweight materials and steel alloys - Bars connected with special rivets - Two-component number tumblers guarantee long-term readability of the digits - Individually configurable code
$29.99
- Transport of U-shackle locks - Mounting on round frames with a diameter of 23/32 - 2 49/64 " - Plastic bracket with rubber inlays for best mounting - Comfortable one-hand-operation - Easy and quick mounting
$49.95
Install or replace all lock cylinders on your Thule products and use the same key for all. - Set of 2 locks, all using the same key - Including grip-friendly Thule Comfort key - Replace the locks in your Thule product in a few easy steps
$7.59
• Straight cable with PVC sleeve • One extra large loop • 3mm • Length: 2'6" • Cable only
$8.99
• Four-digit combination • 4mm cable • Length: 3'6"
$20.99
• Resettable four-digit combination • 4mm chain with protective sleeve • Length: 3'7"
$11.99
• 8mm x 6ft • Vinyl coated (Water resistant) • Double ended • Heavy duty security cable
$28.99
- 6mm chain lock housed in a scratch- and pinch-resistant sleeve with reflective striping - Heavy-duty lock head with 2 keys - Hardened heat treated links - Length: 35"
$22.99 - $26.99
- Resettable combination locking mechanism - Heavy duty self coiling cable - Vinyl coated to protect surfaces - Quick release mounting bracket - Length: 6 feet
$21.99 - $23.99
- Middleweight cable lock with scratch-free outer casing - Includes bracket with quick release for ease of transport - Resettable combination - Length: 6'/183cm
$16.99 - $20.99
- Heavy duty cable lock with a scratch-free outer housing - 6 feet in length, enough to secure wheel and frame - Includes two keys - Bracket: Included
$46.99
- 6mm heat treated chain links - Resettable Combination - Double bolt locking mechanism - Protective casing protects the chain from the elements and your bike from the chain - High visibility easy read digits
$20.99 - $24.99
- High security locking mechanism - Heavy duty self coiling cable - Pick, pull, and drill resistant cylinder with dust cover - Quick release mounting bracket - Vinyl coated to protect surfaces - Includes 2 laser cut keys
$46.99
- Hardened heat treated links - Integrated heavy duty flat tumbler lock - Weather resistant casing - Includes 2 keys - Length: 2.5 feet
$13.99 - $17.99
- Multi-purpose looped ends - Extra flexible steel cable - Straight non-coiling - Vinyl coated to protect surfaces - Diameter: 10mm
$30.99
• Hardened heat-treated links • Integrated heavy-duty flat tumbler lock w/ 2 keys • Weatherproof protective coating
$49.99
• Four-sided trapezoidal chain links • Weather proof nylon cover • Heat treated links • Heat treated high security mini U-lock w/2 keys • 10mm chain • Length: 4 feet
$39.99
- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 5x9"
$39.99
- Single bolt locking mechanism - 13mm hardened steel shackle - Multi position mounting bracket included - User resettable combination - Length: 4x9"
$45.99
- Single bolt locking mechanism - 13mm hardened steel shackle - Multi position mounting bracket included - User resettable combination - Length: 4x9" - Type: STD w/ 4x10mm cable
$39.99
- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 4.5x11.5"
$34.99
- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Mounting bracket included - 2 laser cut keys - Length: 3.5x7"
$45.99
- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Mounting bracket included - 2 laser cut keys - Length: 3.5x7"
$33.99
- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Mounting bracket included - 2 laser cut keys - Length: 3.5x5.5"
$37.99
- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 4.5x9"
$47.99
- Double bolt locking mechanism - Hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 4.5x9"
$16.99 - $20.99
• Heavy duty cable w/ tough coating • Integrated key lock • Bracket included • Length: 6 feet
$17.99
• 8mm x 6ft • Coated cable • Heavy duty laminated key lock
$9.79
- 40mm - Hardened shackle - Flat tumbler lock mechanism w/ 2 keys - Type: Key
$21.99 - $23.99
• L.E.D. light for low light reading situations • Heavy duty zinc alloy lock body • Weatherproof protective coating • Integrated heavy duty 4-digit resettable combination lock
$12.99 - $14.99
- Multi-purpose lightweight cable lock - Resettable combination locking mechanism - Raised dials for easy use - Vinyl coated to protect surfaces
$29.99
- Single bolt high security mechanism - 12mm hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 5x9"
$36.99
- Single bolt high security mechanism - 12mm hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 5x9"
$29.99
- Single bolt high security mechanism - 12mm hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 4.5x11.5"
$25.99
- Single bolt high security mechanism - 12mm hardened steel shackle - Pick, pull, and drill resistant cylinder - Quick release mounting bracket - Length: 4.5x7.85"
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