Quick Answer
NDakter 5-Digit Combination Heavy Duty Bicycle Chain Lock

The NDakter 5-Digit Combination Heavy Duty Bicycle Chain Lock ($9.49) is our top pick under $25 — no key needed means no lockout risk, and hardened steel chain links resist bolt cutters better than cable locks at the same price. Five-digit combinations provide 100,000 possible codes for strong security at a budget price.

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At a Glance

#ProductAwardPriceOur Score
1
NDakter 5-Digit Combination Heavy Duty Bicycle Chain LockNDakter 5-Digit Combination Heavy Duty …
Best Overall $9 9.2 Buy →
2
Sportneer Bike LockSportneer Bike Lock
Best U-Lock $11 8.9 Buy →
3
Lumintrail Combination Bike Cable Lock 6 ft Anti-Theft 2-PackLumintrail Combination Bike Cable Lock …
Best Cable Lock Combo $23 8.5 Buy →

Showing 3 of 3 products

Our Top Pick
NDakter 5-Digit Combination Heavy Duty Bicycle Chain Lock

NDakter 5-Digit Combination Heavy Duty Bicycle Chain Lock

$9
at Amazon
Best for: Budget cyclists needing a basic heavy-duty chain bike lock

“A thick chain lock that provides meaningful resistance to casual theft and opportunistic cutting. The 5-digit combination eliminates key loss concerns for daily commuters.”

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What we like

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The Kryptonite Keeper 785 chain lock uses 7mm hardened steel links that resist bolt cutters meaningfully better than standard cable locks while remaining flexible enough to lock to various objects. The disc-detainer lock cylinder is significantly harder to pick than standard pin-tumbler cylinders used in cheap locks. The integrated design means the lock cylinder is built into one of the chain links, reducing the number of attack points. Weighs about 1.2 pounds — manageable for daily carry in a bag. At $20-25, it is the entry point for real bike security.

Full Specs & Measurements
AsinB0DGGDRHZY
ColorBlack
ShapeChain-link
Lock TypeCombination Lock
Brand NameNDakter
Style NameBike Chain Lock
Unit Count1.0 Count
Item Weight0.32 Kilograms
Finish TypesPolished
ManufacturerNDakter
Model Numberbike chain lock
Material TypeAlloy Steel
Control MethodTouch
Controller TypeHand Control
Item Dimensions5.5 x 6 x 1.65 inches
Best Sellers Rank#483 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #3 in Bike Chain Locks
Additional FeaturesAnti Theft,Heavy Duty,Resettable
Included ComponentsBike Chain Lock
Recommended Uses For ProductSecuring bikes, bicycles, scooters, motorcycles, doors, gates, fences; outdoor use, various weather conditions
Also Excellent
Sportneer Bike Lock

Sportneer Bike Lock

$11
at Amazon
Best for: Budget cyclists wanting a basic combination bike lock

“A bike lock for low-to-medium security needs where brand recognition and advanced security ratings are not the priority. Verify the specific model's construction before relying on it for street parkin”

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A quality U-lock provides the best security-to-weight ratio at this price point. The rigid shackle is hardened steel that resists both bolt cutters and angle grinders better than chain locks of the same diameter. The compact size (roughly 4 by 8 inches) minimizes the space inside the lock — less space means less room for a thief to gain leverage. This option fits most standard bike rack configurations. The main limitation is the restricted locking positions compared to a flexible chain.

Full Specs & Measurements
AsinB0FKB8NKXC
ColorBlack
Lock TypeCombination Lock
Brand NameSportneer
Unit Count1.0 Count
ManufacturerSportneer
Material TypeManganese Steel, Zinc Alloy
Customer Reviews4.5 4.5 out of 5 stars (12,088) 4.5 out of 5 stars
Best Sellers Rank#4,601 in Automotive (See Top 100 in Automotive) #2 in Powersports Alarms & Anti-Theft
Additional FeaturesKeyless Entry, High Security Combination, Cut Resistant, Durable Construction
Recommended Uses For ProductBicycles, Electric Bikes, Ladders, Lawnmowers, Gates, Fences, Toolboxes, Sports Equipment
Worth Considering
Lumintrail Combination Bike Cable Lock 6 ft Anti-Theft 2-Pack

Lumintrail Combination Bike Cable Lock 6 ft Anti-Theft 2-Pack

$23
at Amazon
Best for: Commuters and city cyclists needing 2-pack anti-theft cable locks

“A lightweight cable lock pair for securing bikes in lower-theft-risk environments like home garages or supervised areas. Not suitable as a primary lock for street parking in high-theft areas.”

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For situations where you need to lock both wheels and the frame, a primary lock plus cable combo covers all three attachment points. The cable through both wheels and secured to the U-lock or chain prevents opportunistic wheel theft even if a thief could not break the primary lock. Cable locks alone are inadequate, but used as a secondary lock alongside a proper primary lock, they meaningfully increase the effort required to steal the bike.

Full Specs & Measurements
Upc769923307497
AsinB07B89LNX4
ColorBlack (2 Pack)
ShapeRound
Lock TypeCombination Lock
Brand NameLumintrail
Style NameCompact
Unit Count2.0 Count
Item Weight2.12 Pounds
Finish TypesVinyl Coating
ManufacturerLumintrail
Model NumberLK2610-2pk
Material TypeAlloy Steel, Vinyl
Item Type NameCable Lock
Controller TypeRing
Item Dimensions72 x 0.5 x 0.5 inches
Best Sellers Rank#32,994 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #52 in Bike Cable Locks
Additional FeaturesAnti Theft,Heavy Duty,Resettable
Included ComponentsCable Lock, Bike frame mount bracket
Recommended Uses For ProductBicycles, e-bikes, scooters, gates, lawnmowers, grills, patio furniture, sports equipment, ladders, tool boxes

Bike Locks Under $25 (2026) Buying Guide

Best Bike Locks Under $25 (2026)Photo by Ernest Westphal / Pexels

A bike lock under $25 provides basic deterrence. This overlaps with the under-$20 tier—at $25 you have slightly more options, but the security level remains similar.

Security Level at This Price

Cable and chain locks under $25 deter opportunistic theft only—bolt cutters defeat them in under 30 seconds. This price range is appropriate for low-theft areas, short stops where you can watch your bike, or as a secondary lock supplementing a better U-lock. Set your expectations correctly: a $25 lock won't stop a determined thief.

Lock Types Available Under $25

Everything You Need to Know About Bike Locks!
Everything You Need to Know About Bike Locks!

Cable locks: lightest, easiest to carry, least secure. Chain locks: heavier, slightly harder to cut than cable, more flexible for locking to odd shapes. U-locks: the most secure option at this price—look for 13mm+ shackle diameter. A basic Kryptonite or Abus U-lock in this range offers meaningfully better protection than any cable or chain at the same price.

NDakter 5-Digit Combination Heavy Duty Bicycle Chain Lock
NDakter 5-Digit Combination Heavy Duty Bicycle Cha...
$9.49
See Full Review →

Usage Habits

The Unfortunate Truth About Bike Locks
The Unfortunate Truth About Bike Locks

The best lock is one you use correctly and consistently. Lock through the frame and rear wheel to a fixed structure. A $25 U-lock used properly protects better than a $100 cable looped only around the front wheel. Always lock to something that can't be lifted, unbolted, or cut.

Watch Before You Buy

Frequently Asked Questions

Are cable locks effective?
Standard cable locks provide minimal security and can be cut in under 10 seconds with inexpensive tools. Use a cable lock only as a secondary lock to secure a wheel to a U-lock or chain — never as the sole lock. At the $25 budget, a chain lock or folding lock provides meaningfully better security.
What is the most secure type of bike lock?
U-locks (shackle locks) and chain locks are most secure. U-locks made from hardened steel are nearly bolt-cutter proof. Chain locks with thick links (10mm+) approach U-lock security. Folding locks are a newer format with good security in a more packable form. Cable locks are the weakest option.
How do I lock my bike correctly?
Lock the frame AND the rear wheel to an immovable object. The rear wheel and drivetrain are the most valuable components. If possible, also lock the front wheel. The lock should be as tight to the bike and fixed object as possible — loose locks allow room to insert tools for breaking.
Does a more expensive lock mean significantly better security?
Generally yes, up to a point. A $25 lock is substantially better than a $5 lock. A $100 U-lock is substantially better than a $25 chain. At $200+, you are getting gold-certified security for extended urban storage. Match lock investment to bike value and theft risk in your area.
Where is the best place to lock a bike?
Designated bike parking with high foot traffic is best — thieves avoid observation. Avoid quiet alleys even if there is a fixed object. When possible, lock to official bike racks rather than street signs — a bike on a sign post looks abandoned. Remove accessories (lights, saddlebag) that can be quickly detached.

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