Choosing a bike lock means balancing theft resistance, portability, locking convenience, and price. This roundup compares 10 bicycle locks under $100, from heavy-duty U-lock and cable combinations to flexible resettable combination locks.
Whether you secure a commuter bike outside work, lock up at school, or need an affordable secondary lock, the right choice depends on where and how long you leave your bicycle unattended.
Best 10 Bicycle Locks Under 100 Picks for 2026
Best Heavy-Duty Pick
Sportneer Bike U-Lock With Cable
- 17mm shackle with heavy-duty alloy-steel construction
- Includes a 5-foot cable and mounting bracket
- Two keys and protective silicone coating included
Best For: Riders wanting a rugged U-lock with extra cable reach
Best Keyless Value
Master Lock 4-Digit Cable Lock
- Preset four-digit combination requires no keys
- Flexible 4-foot braided-steel cable
- Lightweight design with vinyl protective coating
Best For: Casual riders seeking lightweight, keyless security
Best U-Lock Simplicity
Master Lock 8320D Keyed U-Lock
- Hardened-steel body helps resist cutting and prying
- Disc-keyed mechanism and double-locking shackle
- Includes two keys and a mounting bracket
Best For: Everyday riders wanting a straightforward keyed U-lock
Best Resettable Combination
- Resettable four-digit combination with over 10,000 possibilities
- Self-coiling 3-foot braided-steel cable
- Includes mounting bracket and PVC weather protection
Best For: Keyless everyday use by commuters, students, and families
Best for Easy Setup
- 0.55-inch solid-steel U-lock
- Includes 6-foot cable and mounting bracket
- Two keys plus cable-management straps
Best For: Daily commuters seeking versatile U-lock security
Multi-Bike Value
Master Lock 3-Pack Cable Locks
- Three 6-foot braided-steel cables
- All locks use the same keys
- Color-coded blue, green, and red
Best For: Families or groups securing multiple bikes
Compact Cable Pick
- Lightweight 10.4-ounce design
- 0.5-inch braided-steel cable
- Includes bracket and two keys
Best For: Lightweight everyday locking and quick stops
Best Cute Cable Lock
- 3.9-foot woven steel cable with PVC coating
- Resettable four-digit keyless combination
- Includes a bike-frame mounting bracket
Best For: Casual bike and scooter parking with a portable, fun design
Best 5-Digit Combination Lock
- Resettable five-digit keyless combination
- 47.24-inch coiled cable for flexible use
- Mounting bracket included for frame storage
Best For: Riders wanting a longer combination code for everyday outdoor stops
Best Two-Pack Value
Compact 4-Digit Cable Bike Locks
- Two self-coiling locks in one pack
- Resettable four-digit combinations
- PVC-coated braided steel cables
Best For: Households securing multiple bikes or small outdoor equipment
Best Heavy-Duty Pick – Sportneer Bike U-Lock With Cable
For shoppers comparing bicycle locks under 100, the Sportneer U-lock stands out as a rugged option with a 17mm shackle and included 5-foot steel cable. Its U-lock and cable can be used together or separately, depending on how much reach and coverage you need.
Best For: Riders who want a substantial U-lock with flexible cable coverage for frames, wheels, and nearby fixed objects.
Pros:
- 17mm alloy-steel shackle and zinc-alloy lock core are designed to resist cutting, sawing, smashing, and drilling.
- Included 5-foot steel cable adds reach for securing wheels or multiple items.
- Comes with a mounting bracket, two keys, and protective silicone coating to help prevent scratches.
Cons:
- At about 1.64 pounds, it is heavier than a basic cable lock.
- The bracket is intended for bike tubes within the listed diameter range, so fit should be checked before purchase.
This is a strong all-around choice when portability matters but you still want more structure than a cable-only lock. Check the U-lock dimensions against your frame and the object you plan to secure it to.
Best Keyless Value – Master Lock 4-Digit Cable Lock
Among bicycle locks under 100, the Master Lock 8143D is a lightweight, straightforward choice for everyday deterrence. Its 4-foot braided-steel cable uses a preset four-digit combination, so there is no key to carry.
Best For: Casual riders, scooter users, and outdoor-gear owners who prioritize low weight and keyless convenience.
Pros:
- Preset four-digit combination provides quick key-free access.
- 4-foot braided-steel cable offers flexible reach around bikes and fixed objects.
- Vinyl coating helps protect bike frames from scratches, and the lock is designed for outdoor use.
Cons:
- The 5/16-inch cable is a basic security solution rather than a heavy-duty U-lock.
- The combination is preset, so it does not offer the personalization of a resettable lock.
Choose this lock for convenient short stops and basic theft deterrence. For higher-risk locations or longer unattended parking, a more substantial locking design may be preferable.
Best U-Lock Simplicity – Master Lock 8320D Keyed U-Lock
The Master Lock 8320D is a practical option for shoppers seeking bicycle locks under 100 without an attached cable. Its hardened-steel U-lock body, disc-keyed mechanism, and double-locking shackle provide a more structured setup for everyday bicycle security.
Best For: Urban and everyday riders who prefer a keyed U-lock for securing a bike to a suitable fixed object.
Pros:
- Hardened-steel body is designed to help resist cutting, sawing, and prying.
- Disc-keyed mechanism is intended to provide pick resistance, while the double-locking shackle adds pry resistance.
- Includes two keys and a mounting carrier bracket.
Cons:
- No cable is included, limiting reach around wheels or larger objects.
- The U-lock opening should be checked against your frame and the parking fixture before buying.
This is a sensible middle ground for riders who want the compact, rigid format of a U-lock. Its no-cable design keeps the setup simple but makes fit and positioning especially important.
Best Resettable Combination – NDakter 4-Digit Cable Lock
The NDakter cable lock is a compact contender among bicycle locks under 100, combining a resettable four-digit combination with a self-coiling steel cable. The 3-foot version is designed for easy carrying and can secure two or three bikes together when the positioning allows.
Best For: Commuters, students, and families who want a customizable, keyless lock for bikes, scooters, strollers, and gear.
Pros:
- Resettable four-digit combination offers more than 10,000 possible combinations and avoids keys.
- Braided steel cable has a PVC coating to help resist scratches, rust, and corrosion.
- Self-coiling design and included mounting bracket make transport and installation convenient.
Cons:
- The 3-foot cable provides less reach than longer cable locks.
- It is positioned as a basic theft deterrent, so it may not suit extended parking in high-crime areas.
- Users must carefully follow the instructions when setting and remembering the new combination.
This lock makes sense when convenience and a personalized combination matter more than maximum physical security. Its compact format is particularly useful for short stops and carrying in a backpack.
Best for Easy Setup – Hapleby U-Lock and Cable Set
For shoppers comparing bicycle locks under 100, this Hapleby set combines a solid-steel U-lock with a 6-foot cable for flexible everyday security. The included bracket and straps also make it practical for commuting and school rides.
Best For: Daily commuters and riders who want a U-lock with extra reach for securing a bicycle or scooter.
Pros:
- Uses a 0.55-inch solid-steel U-lock designed to resist cutting, prying, and drilling.
- Includes a 6-foot steel cable for locking the bike to larger or less conveniently shaped fixtures.
- Comes with a mounting bracket, two keys, and straps for carrying and cable management.
- Dust cover and electrophoresis-treated surface help protect the lock from outdoor exposure.
Cons:
- At about 1.5 pounds, it is heavier than a basic cable lock.
- The cable adds versatility but should be viewed as supplemental security rather than a substitute for the U-lock.
This is the strongest all-around option in the group for riders who prioritize a rigid lock while still wanting the flexibility of a long cable. Its included carrying hardware makes the added bulk easier to manage.
Multi-Bike Value – Master Lock 3-Pack Cable Locks
If you need bicycle locks under 100 for several bikes or outdoor items, this Master Lock three-pack offers keyed-alike convenience in three brightly colored 6-foot cables. Every included key opens all three locks, simplifying shared household use.
Best For: Households, families, or groups securing multiple bicycles and outdoor items.
Pros:
- Includes three 6-foot braided-steel cable locks with flexible construction.
- Keyed alike, so either included key opens all three locks.
- Vinyl coating helps protect secured surfaces from scratches.
- Blue, green, and red colors make the locks easy to identify.
Cons:
- Cable locks are flexible and convenient but do not provide the rigid resistance of a U-lock.
- The package includes two keys for three locks, which may be limiting for larger groups.
This pack is a practical quantity-focused choice rather than a maximum-security setup. It works well when matching keys and multiple lock locations matter more than using a single rigid lock.
Compact Cable Pick – Hapleby 4-Foot Bike Lock
Among bicycle locks under 100, this Hapleby cable lock is a compact choice for quick stops and everyday carrying. Its 4-foot, 0.5-inch braided-steel cable comes with a bracket and two keys, while the PVC coating helps prevent scratches.
Best For: Riders who want a lightweight cable lock for bicycles, scooters, skateboards, or short-term stops.
Pros:
- Lightweight design weighs about 10.4 ounces and includes a mounting bracket.
- Braided steel cable measures 4 feet long and 0.5 inch in diameter.
- Includes two keys and a locking mechanism that can be closed without using the key.
- Sliding cover helps shield the lock from rain and dust, while PVC coating helps prevent scratches.
Cons:
- The 4-foot length offers less reach than the 6-foot alternatives in this roundup.
- As a cable lock, it is more flexible and portable than rigid, high-security locks.
This model suits riders who value low weight and quick handling. The shorter cable is easier to carry but may be less convenient when locking around wide posts or multiple objects.
Best Cute Cable Lock – Fish-Head 4-Digit Bike Lock
If you want bicycle locks under 100 that are easy to carry and simple to use, this 3.9-foot resettable cable lock is a practical option. Its woven steel cable, PVC coating, and four-digit combination provide basic everyday security without requiring a key.
Best For: Casual bike, scooter, and e-bike parking where portability and a keyless design matter.
Pros:
- Resettable four-digit combination eliminates the need to carry a key.
- 3.9-foot coiled cable can attach bikes to trees, fences, railings, and similar objects.
- Includes a mounting bracket and PVC coating to help prevent frame scratches.
- Lightweight, portable design with a distinctive fish-head appearance.
Cons:
- Intended for basic security rather than extended parking in high-crime areas.
- A four-digit code offers fewer combinations than a five-digit lock.
This lock balances convenience, reach, and portability for short stops. Treat it as a deterrent for everyday use, and follow the manufacturer’s advice to park visibly and avoid leaving a bike unattended for long periods.
Best 5-Digit Combination Lock – 47-Inch Bike Cable Lock
Among bicycle locks under 100, this 3.93-foot cable model stands out for its five-digit combination and included mounting bracket. The steel inner cable, zinc alloy lock body, and ABS outer layer are designed for portable everyday use on bikes, scooters, motorcycles, and other equipment.
Best For: Riders who prefer a keyless lock with a longer combination code and frame-mounted storage.
Pros:
- Five-digit resettable combination makes guessing the code more difficult than with shorter codes.
- 47.24-inch coiled cable offers useful reach while remaining easy to store.
- Includes a mounting bracket for carrying the lock on a bike frame.
- Layered steel, zinc alloy, and ABS construction is designed to handle normal outdoor exposure.
Cons:
- Requires remembering or recording the selected combination.
- The product is not presented as absolute security, particularly for long unattended parking.
- Changing the default 00000 code is necessary before use.
The five-digit dial is the main reason to choose this model over a basic combination cable lock. It is a sensible fit for short-term outdoor stops when you want extra code flexibility and convenient frame storage.
Best Two-Pack Value – Compact 4-Digit Cable Bike Locks
For shoppers comparing bicycle locks under 100, this two-pack provides two compact combination cables for bikes and other everyday items. Each self-coiling lock has a resettable four-digit dial, a braided steel cable, and a PVC coating for basic cut resistance and scratch protection.
Best For: Households that need two lightweight locks for bikes, scooters, gates, or other equipment.
Pros:
- Two locks are included, making it useful for multiple bikes or shared equipment.
- Resettable four-digit combination provides keyless convenience.
- Self-coiling 2-foot cables store compactly and can secure 2–3 bikes together according to the product notes.
- PVC coating helps protect surfaces from scratches and withstand outdoor conditions.
Cons:
- Two-foot length offers less reach than the longer cable options in this roundup.
- No mounting bracket is included.
- Designed to deter petty theft and provide basic security, not absolute protection.
This set makes the most sense when quantity and compact storage matter more than maximum reach. Its short cables work well for quick stops and securing smaller equipment, while the two-pack adds flexibility for families or multiple vehicles.
How We Picked the Best Bicycle Locks Under 100
We selected products across the main lock styles represented in this price range: rigid U-locks, keyed cable locks, combination cables, and multipack options. We focused on practical security features, locking length, shackle or cable construction, mounting hardware, key or combination convenience, and suitability for everyday transportation.
Price alone does not determine security. A thick U-lock generally resists more common attack methods than a lightweight cable, while a cable is often easier to carry and more flexible around racks, frames, and wheels. The best value depends on your parking environment and how much convenience you need.
Quick Comparison
- Best for higher security: Choose a U-lock with a substantial shackle, especially when paired with a cable for the front wheel.
- Best for flexibility: Cable locks are easier to loop through awkward racks and multiple bicycle parts.
- Best for key-free access: Resettable combination models avoid carrying or replacing keys.
- Best for families or multiple bikes: Multipacks and keyed-alike sets can simplify locking several bicycles.
- Best for portability: Shorter, lighter cables and models with mounting brackets are convenient for regular rides.
Key Buying Factors for Bicycle Locks Under 100
Lock Type and Construction
Use a U-lock when theft resistance is the priority and your bike rack provides a suitable anchor point. Cable locks offer more reach but are typically better as a convenience lock or secondary layer of protection. Look for solid steel components, a protective coating, and a locking mechanism that does not feel loose or difficult to operate.
Length, Diameter, and Fit
Check whether the lock can pass around the frame, wheel, and fixed rack without leaving excessive space. Longer cables are more versatile, while shorter locks can reduce room for tools to work. A thicker cable or shackle usually improves resistance, but it also adds weight and may be less portable.
Keys, Combinations, and Mounting
Keyed locks are quick when the key is accessible, while combination locks are useful if you do not want to manage keys. Resettable combinations should be set to a memorable code that is not obvious. A frame-mounting bracket can make heavier locks substantially easier to carry.
Where You Park
For brief stops in a low-risk area, a cable may be sufficient. For overnight parking, crowded urban locations, or long periods away from the bike, consider a stronger U-lock and secure the frame to an immovable object. No consumer lock makes a bicycle completely theft-proof.
Who Should Buy Which Bicycle Locks Under 100?
Daily commuters should prioritize a sturdy U-lock or a U-lock-and-cable set with a convenient mount. Casual riders may prefer a lightweight combination cable for short stops. Families and multi-bike owners can benefit from multipacks or keyed-alike locks. Riders who frequently lock in unfamiliar places should choose the strongest practical lock they are willing to carry and add a second locking point when possible.