Sportneer 5-Digit Combination Bike Lock — 4.9ft Heavy-Duty Chain, Keyless Anti-Theft Protection

Sportneer’s 5-digit combination bike lock is a keyless, heavy-duty chain lock that delivers high-security protection with up to 100,000 combinations for bicycles, scooters, gates and more.

Designed for riders who want robust theft resistance without carrying a key, this Sportneer chain lock pairs a thick manganese-steel chain with a zinc-alloy combination head and a protective sleeve. Multiple lengths are available to suit different uses—locking a single frame, securing two bikes together, or anchoring equipment to fixed objects—while the dustproof cap and fabric cover preserve both lock function and bike finish.

How secure is the 5-digit combination mechanism?

The lock uses five rotating dials to create up to 100,000 possible codes, making casual tampering unlikely. The combination head is constructed from sturdy zinc alloy and works with the heavy steel links to resist common attacks like cutting or sawing.

• 100,000 code possibilities from five dials
• Zinc-alloy lock core for impact and corrosion resistance
• 6mm (0.236") manganese-steel chain links for cutting resistance
• Dustproof cap protects the dialing mechanism from grit and moisture

Will it scratch my bike or rust over time?

Sportneer covers the chain in a flexible polypropylene fabric sleeve that cushions the metal and shields paintwork from contact damage. The sleeve also limits direct exposure to moisture, helping to reduce rust on the chain links.

• Protective fabric prevents paint scuffs and dings
• Resilient sleeve resists weathering and abrasion
• Chain material chosen for long-term corrosion resistance
• Dust cap keeps water and sand out of the lock opening

How easy is it to set and change the combination?

Setup is straightforward: the lock ships set to 00000 and can be personalized in seconds by rotating the reset dial 90° and selecting a new code. Resetting requires keeping the wheels in the unlock position while you rotate the dial, then returning it to lock mode—no tools or key needed.

• Factory default code: 00000 for quick first use
• Reset dial rotates 90° to enter programming mode
• Simple wheel alignment returns the lock to secure operation
• Keyless design eliminates lost-key worries

Which lengths and uses work best for my needs?

Sportneer offers several chain lengths (including 2.62ft / 3.2ft / 3.6ft / 4ft / 4.9ft) so you can choose based on how you need to route the chain and what you’ll secure. Longer chains let you lock multiple bikes or thread around larger anchors; shorter lengths are lighter for commuting and fold into bags easily.

• 4.9ft length available for locking two bikes together
• Shorter lengths ideal for compact storage and portability
• Works on bicycles, e-bikes, scooters, gates, ladders and equipment
• Measure lock-head diameter (1.3") before threading through narrow gaps

Who is this for: The Sportneer 5-digit combination chain lock suits commuters, urban cyclists, e-bike owners and anyone who prefers keyless convenience combined with robust physical protection. It’s a practical choice if you need flexible lengths, scratch protection for your bike’s finish, and an easy-to-reset combination—especially when you want a balance of portability and strong deterrence for everyday security needs.