Kryptonite

Kryptonite Evolution Series 4 Standard

Name: Kryptonite Evolution Series 4 Standard
Brand: Kryptonite

budget

A double-deadbolt oval crossbar and 14 mm hardened steel held up through a year of daily use with no reported issues, priced near $50. Solid against bolt cutters and leverage, not built to survive an angle grinder.

$50 typical

Check availability

EDITION 01RESEARCHED 2026-08-042 SOURCESREFRESH DUE 2027-01

SUBSTANCE SCORES

substance7.8/ 10

design6.5/ 10

value6.7/ 10

WHY THE PRICE IS JUSTIFIED

Its value is straightforward: substantial hardened steel, a double deadbolt, reinforced oval crossbar and a proven disc cylinder for roughly $50. It does not pretend to resist an angle grinder, so it is an honest moderate-risk choice.

MATERIALS

Shackle14 mm hardened MAX-Performance steel

Provides meaningful resistance to bolt cutters and leverage.

CrossbarHardened oval steel

The oval shape is stronger against twist attacks than common round tube.

Cylinder protectionSliding dust cover

Keeps grit and rain out of the keyway.

CRITERIA

7/10

Attack Resistance

14 mm hardened steel is strong against manual tools but is not anti-grinder armor.

8/10

Locking Architecture

Hardened double deadbolt and oval crossbar resist twist and leverage.

9/10

Real-World Reliability

A year-long independent use report found no issues; dust cover protects cylinder.

8/10

Fit And Versatility

4 × 9 in geometry fits most conventional racks.

7/10

Carryability

FlexFrame bracket is included; still heavier than a mini lock.

10/10

Operational Value

Current sub-$55 pricing for hardened architecture and three keys is excellent.

IDEAL FOR

·Everyday commuter bikes
·Moderate-risk daytime parking
·Riders who need a larger conventional U-lock

NOT FOR

·Grinder-prone city centers
·Overnight public locking of high-value bikes

DESIGN & ERGONOMICS

A clean, traditional 4 × 9 in U-lock that fits normal racks better than minis. FlexFrame bracket, vinyl protection and dust cover make it easy to live with, though it is not as quiet or compact as newer designs.

LONGEVITY

Kryptonite Key Safe support and durable mechanical design; one independent reviewer reported a year with no issues. Use lock-specific lubricant and keep the dust cover closed.