MainstreamUSA · Founded 1989

OnGuard Bike Accessories

American lock manufacturer delivering high security at competitive prices. Known for double and quad-locking mechanisms, bump-resistant cylinders, and comprehensive warranties. Strong in North American market.

www.onguardlock.com

OnGuard locks

Match lock value to bike value (rule of thumb: spend ~10% of bike value). Inner U-lock dimensions need to clear frame + wheel + secure object. Standard U-lock:

Onguard

OnGuard Brute LS 8004

Inner: 3.5" x 7.5" (9 x 19cm). Mid-size U-lock suitable for commute + light recreation. Affordable high-security option.

$99.954.5

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Browse all locks →Shop for commuters, e-bike riders, beginners or teenagers (ages 12-16)

OnGuard head-to-head comparisons

See how OnGuard stacks up against the other brands riders cross-shop - specs, fit, and which one wins for your kind of riding.

Bell Catalyst 300 vs OnGuard Brute LS

A $20 starter U-lock against a $100 hardened one, both aimed at students and commuters. Both come with frame brackets and anti-theft offers, but the OnGuard's quad-locking shackle and Sold Secure Silver rating put it a notch above the Bell on real-world security.

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Compare OnGuard to other brands

Not sure if OnGuard is right for you? Our head-to-head accessory comparisons put the top brands side by side - readers cross-shop OnGuard with Abus, AXA, Bell, Hiplok and Kryptonite.

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OnGuard locks

OnGuard Brute LS 8004

OnGuard head-to-head comparisons

Compare OnGuard to other brands