Not sure what sized bike is best?
Answer a few short questions and we'll make a recommendation on which size is best for you.
OnGuard Mini U-Lock 90 x 140 mm + 120 x 10 mm Cable
OnGuard Akita Series Lock Cable 9.3m x 10mm
Shop OnGuard
You want protection you can see and rely on. OnGuard makes serious bike locks that don’t mess around but are easy to use and take everywhere.
These locks get built tough so your ride stays safe without making you carry something miserable.
The OnGuard Story
OnGuard Locks launched in 1993 in Massachusetts offering locks for bikes, powersports and outdoor equipment. Its founders focused on creating locking mechanisms using hardened steel shackles, multi-point locking, and bump-resistant cylinders. The brand quickly gained trust for durability and honest security claims.
That history means every time you clip on an OnGuard lock you’re getting gear designed to resist cutting, leverage and weather. Riders today get locks with strong materials and clever mechanisms, without paying premium prices.
Shop OnGuard Categories
Why Ride OnGuard?
- Titanium-reinforced steel links make their chains resist cutting or prying from bolt cutters or hacksaws.
- Double and quattro bolt locking heads lock the shackles on two or four sides to resist twisting, pulling and prying.
- Weather sealed designs include automatic keyway covers and durable covers to protect against rust and damage.
- User-friendly features like combination locks with thousands of code options, nylon chain sleeves so your paint stays safe, and lifetime warranties on many locks.
Popular OnGuard Ranges Explained
OnGuard Cable
The OnGuard Cable range gives you flexible locking with lighter steel construction so you can wrap around poles or lock up wheels easily. Good for lower risk areas or quick stops.
OnGuard Mastiff
The OnGuard Mastiff locks are made for high protection. They use titanium-reinforced hardened steel chains, robust locking heads like the X4P Quattro Bolt or dual-lock mechanisms, protective sleeves and automatic keyway covers. Great if you often lock up in the city or need beefed-up security.
OnGuard Pitbull Mini
Pitbull Mini U-locks balance size and strength. The OnGuard Pitbull Mini is compact yet secure, so it’s good for locking your frame and both wheels when options are tight. U-locks are naturally tougher against leverage style attacks.
OnGuard Zip Tie
The OnGuard Zip Tie combo locks are lightweight-combo, basic protection when you need to lock quickly or use as secondary security. Two-pack zip tie combos offer backup for wheels or accessories.
OnGuard Mini
The OnGuard Mini series includes small-frame U-locks and short cables for riders who want something sturdy but compact. Good around campus, café stops or on commuter bikes.
OnGuard Rottweiller
Rottweiller chain and cable-key locks feature thicker, tougher steel and reinforced locking mechanisms. Ideal when chain strength and reliable key access matter most—such as securing rides overnight or in high-risk zones.
