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Overview

Why Choose the KryptoFlex 815 as Your Secondary Cable Lock?

The Kryptonite KryptoFlex 815 Cable Lock delivers lightweight, flexible security in a package compact enough for a jersey pocket or saddle bag. Built around an 8mm braided steel cable and a four-digit resettable combination lock, it gives you keyless protection for casual stops, coffee runs, and rides where backup security matters but extra weight does not. The five-foot cable length threads through wheels and frames with enough slack to wrap most bike racks and posts.

A vinyl protective coating keeps the cable from marking your frame or paint during contact, and the combination reset feature lets you personalize the code rather than memorizing a factory default. At 8mm, this is Kryptonite's lightest option in the KryptoFlex range, making it the right pick as a secondary lock paired alongside a U-lock or chain, or as a standalone for low-risk stops where speed and convenience are the priority.

All the specs

MPN 005209

Cable Diameter
8mm braided steel
Cable Length
5 feet (150cm)
Locking Mechanism
4-digit resettable combination
Coating
Vinyl frame-protection sleeve

FAQ

Good questions

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How does the KryptoFlex 815 compare to the 1018 and 1218 models?

The 815 uses an 8mm cable, making it the lightest and most packable KryptoFlex option. The 1018 is 10mm and the 1218 is 12mm. Choose based on how much cut resistance you need versus how light you want to travel.

Is the 5-foot length enough to secure a wheel and frame?

Yes, 5 feet is enough to loop through a wheel and around a frame tube, or through both wheels with the frame leaned against a rack. For longer reach, the 1018 and 1218 both offer 6 feet.

Can I use the KryptoFlex 815 on its own without a U-lock?

For low-risk, short-duration stops it works fine on its own. For any situation involving higher theft risk or longer unattended parking, pair it with a U-lock or heavier chain lock.

Reviews

What riders say about the Lab

4.9 ★★★★★ 119 Google reviews of Dialed Cycling Lab Read all reviews on Google ↗
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“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
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