You park your bike outside your office, head in for a quick coffee, and by the time you’re back, it’s gone. Sadly, this is a common story Bike theft happens every 30 seconds in the U.S. That’s why choosing the right lock matters more than ever.
When it comes to keeping your bike safe, you don’t want to take chances. You need a lock that’s strong, simple to use, and tough enough to deter thieves. That’s where the Master Lock 8143D Combination Black Cable comes in.
I’ve personally used this lock on my daily rides and tested it in various weather and locations. In this review, I’ll walk you through everything from its build quality to how well it handles real-life use.
We’ll dive into its durability, security features, ease of use, and even how it fits with your riding gear like cycling jerseys, cycling shorts, and even a rain coat for wet days.
Rating and Specifications
Security Level: 8.6 | Durability: 9.2 | Ease of Use: 8.6 | Build Quality: 9.1 | Value for Money: 8.3 | Lock Functionality: 8.6 | Portability: 8.7 | Locking Mechanism: 9.2 | Weather Resistance: 8.4 | Versatility: 7.8 | Works Well: 9.1

Feature | Description |
---|---|
Brand | Master Lock |
Model | 8143D |
Color | Black |
Lock Type | Combination Lock |
Cable Length | 4 ft (1.2 meters) |
Cable Diameter | 5/16 inch (8 mm) |
Material | Braided steel with vinyl coating |
Combination | 4-digit preset, keyless |
Usage | Bikes, gates, toolboxes, etc. |
Coating | Protective vinyl |
Security & Durability

Security Features
This lock features a preset 4-digit combination for keyless convenience. I found it easy to remember and quick to use.
The combination locking mechanism offers basic security and works best in areas with moderate theft risk. I wouldn’t leave my bike overnight downtown, but for daytime errands or school runs, it’s ideal.
Anti-Theft Technologies
The braided steel cable provides good cut resistance while remaining flexible. Its integrated lock mechanism means fewer parts to break or lose. The lock acts as a solid theft deterrent, especially when used properly around the bike frame and wheel.

How Secure Is It?
- Combination Lock: 4-digit, no key needed.
- Cut Resistance: Moderate.
- Anti-Pick Design: No loose components.
- Quick Deterrence: Great for short-term stops.
Materials and Construction
Cable Material and Thickness
The Master Lock 8143D Combination Black Cable is made from braided steel, giving it both strength and flexibility. At 5/16 inch (8 mm) in diameter and 4 ft (1.2 m) in length, it’s long enough to wrap around both your bike frame and rear wheel.
You’ll appreciate this if you’re also wearing gear like base layers or a reflective strips vest.
Lock Body Material
The lock housing is made from sturdy composite material with a focus on durability over weight. Not heavy like U-locks, but just enough to feel solid.

Protective Coatings
What I really liked is the protective vinyl coating. Master Lock 8143D keeps your bike’s paint job safe from scratches handy if you just invested in a new ride or wear your best trousers when riding.
Ease of Use & Portability
This is where the Master Lock 8143D Combination Black Cable shines for everyday riders like you and me.
Ease of Use
No key means no stress. I simply loop the cable, spin the dials to lock it, and I’m done in seconds. Resetting isn’t possible, but it comes preset.
Portability & Carrying
It coils easily and fits right into a backpack pocket or even my pannier. That’s crucial when I’m also carrying things like gloves, socks, or a spare sunglass.

Aspect | Detail |
Weight | Lightweight and easy to carry |
Cable Flexibility | Very flexible, easy to wrap |
Storage | Coils tightly, fits in bags |
Installation | No frame mount needed |
For daily commutes, grocery runs, or coffee stops, it’s convenient, compact, and never gets in the way even if I’m riding my cheapest electric bike.
Design & Features
- Compact and sleek black design.
- Smooth rotating dials for combination.
- 4 ft cable long enough for frame and wheel.
- Scratch-resistant vinyl layer.
- No keys required.
I love the simplicity of the Master Lock 8143D Combination Black Cable. It’s no-frills but does the job. It also looks clean and professional great if you’re into stylish cycling jerseys or minimalist gear.
What’s in the box? Just the combination cable lock, no fancy extras. But that’s okay it keeps things simple.

Specific Aspect
Aspect | Details |
Weather Resistance | Works well in rain, won’t rust easily |
Bike Compatibility | Fits all standard bike frames |
Noise | Silent when coiled, no rattle |
Value | Great price for short-trip security |
This is my go-to lock for errands around town. It holds up even on rainy days when I’m in a rain coat, and doesn’t bang around or make noise during rides.
You won’t notice it until you need it and that’s exactly what you want. Whether you’re dressed for a ride or in casual gear with cycling shorts, this lock just fits your life.

Included Accessories
Here’s what you get when you pick up the Master Lock 8143D Combination Black Cable:
- Mounting Bracket: Easy to install, holds the lock firmly on your bike.
- Cable: 4 ft long and 5/16 in thick; perfect for securing wheels and Bike Parts & Accessories.
- Keys: This lock uses a combination mechanism, so no physical keys needed making it easier for you!
Who is the Bike Lock For?
If you’re someone who loves cycling around town on a folding bike, a sturdy cruiser bike, or even a BMX bike, then the Master Lock 8143D Combination Black Cable is a solid choice. It’s light, easy to carry, and perfect if you’re always on the go.
I use it daily when I ride to the grocery store or make a quick café stop. You’ll benefit from its convenience, especially if you don’t like dealing with keys.
This lock shines in situations like short errands or low-to-medium crime areas. It’s also handy when you need a secondary lock to pair with a U-lock for extra security. Use it to secure your bike’s tires equipment, or even smaller items like helmets and baskets.
Comparison with Other Bike Locks
Feature | Master Lock 8143D | U-Lock | Chain Lock |
---|---|---|---|
Weight | Lightweight | Heavy | Medium |
Locking Mechanism | 4-digit combination | Key-based | Key-based |
Ideal For | City rides, short stops | High-crime areas | Overnight locking |
Portability | Easy to carry | Hard to carry | Bulky |
Scratch Resistance | Vinyl coating | None or minimal | Sometimes padded |
Cable Length | 4 ft | Limited by U-shape | Varies, usually longer |
Use with tubes or accessories | Yes | Limited | Yes |

Pros and Cons
Pros:
- Easy to carry and lightweight design.
- No keys needed—set your own code.
- Flexible and can wrap around posts easily.
- Great for low-risk areas or backup lock.
- Won’t scratch bike frame due to vinyl coat.
Cons:
- Not ideal for high-risk locations.
- Can’t reset preset combination.
FAQ
Is the Master Lock 8143D weather-resistant for outdoor use?
Yes, it includes a protective vinyl coating that shields the cable from rain and other elements. I’ve used mine through light showers without any issues.
It’s ideal for everyday outdoor use, but I still recommend storing it in a dry place when not riding for long periods. This helps extend its lifespan and keeps the locking mechanism smooth.
How long is the cable on the Master Lock 8143D?
The cable is 4 feet long, giving you enough length to lock your frame and wheel to a rack or pole. It’s also 5/16 inches thick, offering basic protection. While it won’t stop heavy-duty theft tools, it’s great for daily errands.
Can I use this bike lock on a folding bike?
Absolutely! I often use it with my folding bike. Because the cable is flexible and compact, it easily threads through smaller bike frames, making it a perfect match for your foldable ride.
Does Master Lock 8143D work with cruiser or BMX bikes?
Yes, I’ve tried it with both a cruiser bike and a BMX bike. It fits well around wider frames, especially with the generous cable length. Just make sure to lock it through a secure point.
What makes this cable lock a budget-friendly option?
It’s super affordable and still does a solid job. I was searching for something reliable but not too expensive when I found this. For anyone on a budget or needing a secondary lock, this is an excellent pick.
Final Verdict
If you’re looking for a light, easy-to-use, and reliable lock, the Master Lock 8143D Combination Black Cable checks all the boxes. It’s not meant to replace high-security U-locks but serves well for everyday rides, quick stops, and secondary protection.
The preset combination makes it super convenient, especially when you’re juggling things like your cycling shorts, base layers, or gloves.
I highly recommend it for budget-conscious riders and casual cyclists. Whether you’re sporting cycling jerseys, a rain coat, socks, or even a pair of stylish sunglass, this lock lets you park your bike with confidence without breaking the bank.
It even complements your existing gear or security setup perfectly. If you’re exploring Bike Parts & Accessories, this should be on your must-have list.
Just don’t forget to loop it through your wheels or secure your tubes for extra peace of mind.
Leave a Reply