PremiumUSA · Founded 1971

Kryptonite Bike Accessories

The gold standard in bike lock security. Invented the modern U-lock and remains the market leader. Known for innovative designs, rigorous testing, and industry-leading security ratings.

www.kryptonitelock.com

Kryptonite 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:

Kryptonite Evolution Series 4 Standard

Inner dimensions: 4" x 9" (10 x 23cm). Fits frame + single wheel through U + around fixed object. Standard commute size.

$47.954.4

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

Kryptonite head-to-head comparisons

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

Kryptonite Evolution vs Abus Granit X-Plus 540

The two most-recommended U-locks for city bikes. Both have 16 mm hardened-steel shackles - the difference is keyway design, weight, and which insurance-approved security rating they actually carry.

Browse all accessory comparisons →

Compare Kryptonite to other brands

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

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Kryptonite Bike Accessories

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Kryptonite locks

Kryptonite Evolution Series 4 Standard

Kryptonite head-to-head comparisons

Compare Kryptonite to other brands

Kryptonite Bike Accessories

Categories

Kryptonite locks

Kryptonite Evolution Series 4 Standard

Kryptonite head-to-head comparisons

Compare Kryptonite to other brands