Kryptonite Kryptolok
Kryptolok
Kryptolok
Kryptolok
Kryptolok
Kryptonite

Kryptonite Kryptolok

$72.95
In Stock

KryptoLok U-Lock from Kryptonite offers hardened steel protection with a double-deadbolt design and high-security disc cylinder. Built for commuters and city riders, it includes a FlexFrame bracket and two stainless keys.

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Available Options

Option Price Availability
Kryptonite, KryptoLok STD (DD), U-Lock, Key, 101x229mm, 4''X9'', Thickness in mm: 13mm, Grey $74.95 In Stock
Kryptonite, KryptoLok STD w/Cable (DD), U-Lock, Key, 101x229mm (with 122cm cable), 4''X9'' + 4', Thickness in mm: 13mm, Grey $79.95 In Stock
Kryptonite, KryptoLok ATB (DD), U-Lock, Key, 127X229mm, 5''x9'', Thickness in mm: 13mm, Grey $76.95 In Stock
Kryptonite, KryptoLok LS (DD), U-Lock, Key, 101x292mm, 4''x11.5'', Thickness in mm: 13mm, Grey $76.95 In Stock
Kryptonite, KryptoLok Mini-7 (DD), U-Lock, Key, 83x178mm, 3.25''x7'', Thickness in mm: 13mm, Grey $72.95 In Stock
Kryptonite, KryptoLok Mini-7 w/Cable (DD), U-Lock, Key, 83x178mm (with 122cm cable), 3.25''x7'' + 4', Thickness in mm: 13mm, Grey $76.95 In Stock
Kryptonite, Kryptolok Mini-7 (DD), U-Lock, Key, 83x178mm, 3.25''x7'', Thickness in mm: 13mm, White $72.95 In Stock
Kryptonite, Kryptolok Mini-7 (DD), U-Lock, Key, 83x178mm, 3.25''x7'', Thickness in mm: 13mm, Red $72.95 In Stock
Kryptonite, Kryptolok Mini-7 (DD), U-Lock, Key, 83x178mm, 3.25''x7'', Thickness in mm: 13mm, Blue $72.95 In Stock
Kryptonite, Kryptolok Mini-7 (DD), U-Lock, Key, 83x178mm, 3.25''x7'', Thickness in mm: 13mm, Orange $72.95 In Stock

Product Details

Overview & Technology

KryptoLok is an updated, no-nonsense U-lock designed around materials and mechanics that slow down would-be thieves. The shackle is made from 12.7mm hardened performance steel (listed spec thickness ~13mm) to resist cutting and leverage attacks, while the double deadbolt locking mechanism bites into both sides of the shackle for improved pry resistance. The lock uses a high-security disc-style cylinder that minimizes exposed keyways and reduces vulnerability to picking. A dust cover protects the cylinder from grit and weather, and two stainless steel keys are included so you always have a spare. The package also includes Kryptonite’s FlexFrame U-bracket for secure, rattle-free transport on the frame.

Key Features & Benefits

Double deadbolt construction increases resistance to twisting and leverage attacks by locking the shackle on both sides. The 12.7mm hardened performance steel shackle gives a strong balance of weight and security suitable for everyday urban use. Disc-style cylinder and dust cover protect the core from picking and the elements, extending service life and keeping the mechanism reliable. The included FlexFrame bracket keeps the lock stable on the frame and makes it easier to ride with the lock mounted.

Fit, Sizes & Compatibility

The KryptoLok family comes in multiple sizes — from the Mini-7 (83 x 178mm) to LS (101 x 292mm) and ATB (127 x 229mm) — so you can pick the internal dimensions that best fit your frame, wheel and locking points. The standard model ships with a FlexFrame U-Bracket that clamps to most seat-tube or down-tube diameters; check your frame tube diameter and bracket placement to ensure clearance. For extra versatility, choose the STD w/Cable variant which adds a 122cm (4') cable for securing wheels and accessories. The lock’s 4" x 9" (101 x 229mm) internal clearance on the common STD size fits most urban frames and allows locking to bike racks, lamp posts and larger fixed objects.

Who This Lock Is For

This KryptoLok is built for commuters, students and road riders who need reliable, everyday security for short- to medium-duration stops in urban and suburban environments. It’s a great match for riders who prioritize a trusted keyed lock with a beefy shackle and robust locking mechanism. If you carry wheels, accessories or have multiple bikes to secure, opt for the w/Cable model to add flexible coverage. Riders with heavy e-bikes or those who need maximum protection in high-theft areas may prefer a larger, thicker shackle or combine this lock with a secondary chain or heavy-duty cable.

Key Features

  • ✓ 12.7mm hardened performance steel shackle for solid cut resistance
  • ✓ Double deadbolt locking secures both sides of the shackle
  • ✓ High-security disc-style cylinder reduces picking vulnerability
  • ✓ Dust cover protects the lock core from grit and weather
  • ✓ Includes two stainless steel keys — one spare included
  • ✓ FlexFrame U-Bracket for quiet, frame-friendly on-bike transport
  • ✓ Multiple sizes and a cable variant for wheel and accessory security

Specifications

Bracket Flexframe
Internal Lock Size Metric 101x229mm
Lock Type Key
Primary Color Grey
Thickness In mm 13mm
Internal Lock Size Imperial 4''X9''

Product Identifiers

Vendor Item # 002031
UPC 720018002031

Frequently Asked Questions

Does this KryptoLok come with a bracket for carrying on the bike?

Yes. The KryptoLok includes Kryptonite’s FlexFrame U-Bracket for mounting the lock to most down-tubes or seat-tubes. The bracket keeps the lock secure and minimizes rattling while you ride.

What is the difference between the standard and w/Cable versions?

The w/Cable variant of the KryptoLok includes a 122cm (4') braided cable that lets you secure wheels or multiple items in addition to the frame. The cable provides flexibility but should be used as a complement to, not a replacement for, the U-lock.

Are replacement keys or key code registration available?

Kryptonite offers replacement key services and key registration for many of their locks. Check the included documentation or Kryptonite’s website with your lock’s serial/part number for specific replacement options and procedures.

How weather-resistant is the lock?

The lock’s disc-style cylinder and dust cover help keep moisture and grit out of the mechanism for reliable operation in wet conditions. Regular cleaning and light lubrication of the cylinder will prolong life and performance.

How secure is this lock against theft?

The KryptoLok’s hardened shackle and double deadbolt offer strong resistance to common attacks like leverage, prying, and cutting with hand tools. While no lock can be completely theft-proof, the KryptoLok is a high-value deterrent suitable for everyday urban security when used correctly.

Is this lock suitable for e-bikes and heavier bicycles?

The KryptoLok provides good protection for most bikes, including many e-bikes, but heavier or high-value e-bikes in high-risk areas may benefit from a larger shackle size (ATB or LS) or a secondary locking method for added security.

Buying Guide

When choosing a U-lock, look at shackle thickness, internal clearance and the locking mechanism. Thicker shackles (12–15mm and above) generally resist cutting better; the KryptoLok balances strength and carry weight with its ~13mm hardened steel shackle and double deadbolt. Match internal dimensions (e.g., 4" x 9" vs 5" x 9") to your frame and common locking points so you can lock the frame and a wheel to a post. Consider a cable or secondary lock if you need to secure both wheels or accessories. Also evaluate carrying solutions — a compact bracket like Kryptonite’s FlexFrame keeps the lock on the bike with minimal noise and hassle.

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