Kryptonite

Kryptonite has 2 researched listings in our catalogue across 1 category; the highest scoring is Kryptonite Evolution Mini-7 Bike U-Lock. Figures below are computed only from these listings, which are research reviews of published product information, not hands-on tests.

Reviewed listings

2

Average editorial score

7.5/10

Average buyer rating

4.5/5

Recorded price range

$48.49–$89.99

Buyer ratings combine 25,679 captured Amazon ratings.

Highest-scoring Kryptonite products

By editorial score

#1 · E-bikes & cycling accessories

Kryptonite Evolution Mini-7 Bike U-Lock, 13mm Steel Shackle, 4 ft Cable

$89.99 · 8.0/10

The 13mm hardened steel shackle offers dependable mid-tier deterrence for everyday urban stops, while the secondary cable secures quick-release front wheels. Its compact dimensions limit attachment options around thick street poles and utility posts. For higher-value e-bikes left unattended for long periods, consider pairing it with a heavier secondary chain.

#2 · E-bikes & cycling accessories

Kryptonite Keeper 785 Bike Chain Lock, 2.8 ft Heavy Duty Anti-Theft Lock

$48.49 · 7.0/10

The 7mm manganese steel links provide a tangible upgrade in physical security over hardware-store chains. The 2.8-foot length is somewhat restrictive, requiring careful positioning against bike racks and street anchors. It strikes a pragmatic balance between portability and daytime deterrence for mid-value bicycles.

Every Kryptonite product we reviewed

2 listings

No. 01 — Daily urban commuting on standard bicycles

Kryptonite Evolution Mini-7 Bike U-Lock, 13mm Steel Shackle, 4 ft Cable

$89.99★★★★★4.514,182 ratingsOur score 8.0/10

The 13mm hardened steel shackle offers dependable mid-tier deterrence for everyday urban stops, while the secondary cable secures quick-release front wheels. Its compact dimensions limit attachment options around thick street poles and utility posts. For higher-value e-bikes left unattended for long periods, consider pairing it with a heavier secondary chain.

• +13mm hardened steel shackle resists hand tools
• +Included four-foot cable loops through wheels
• +Proven internal disc-style cylinder mechanism

• −Compact shackle limits anchor point selection
• −Added weight compared to basic cable alternatives

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No. 02 — Securing mid-value bikes in moderate-risk areas

Kryptonite Keeper 785 Bike Chain Lock, 2.8 ft Heavy Duty Anti-Theft Lock

$48.49★★★★★4.611,497 ratingsOur score 7.0/10

The 7mm manganese steel links provide a tangible upgrade in physical security over hardware-store chains. The 2.8-foot length is somewhat restrictive, requiring careful positioning against bike racks and street anchors. It strikes a pragmatic balance between portability and daytime deterrence for mid-value bicycles.

• +7mm four-sided hardened manganese steel links
• +End-link design secures directly to deadbolt
• +Reputable lock manufacturer with replacement key service

• −Short reach limits locking to wider posts
• −Noticeably heavy to transport without a dedicated bag

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