Kryptonite Kryptolok Standard Bike U-Lock
- 12.7 mm hardened steel shackle
- Double deadbolt anti-rotation design
- 4 x 9 inch interior opening
- FlexFrame-U bracket and 2 keys included
- 6 out of 10 on the maker's security scale
- 2.8 pounds, limited lifetime warranty
Last refreshed Oct 3, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A mid-level U-lock for riders who park for short stretches and want a mounting bracket included. The maker's own security scale puts it in the middle, so it is best for quick stops rather than overnight in a busy city.
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ASIN: B06XC66Z42Model: 720018002031Category: U-Locks
Overview
Not a cable combo, this Standard U-lock ships as the lock alone, with a bracket for carrying it and two keys. The hardened steel shackle has a vinyl coating over the finish, and a sliding cover shields the keyway from dirt.
The reason to buy is a heavy duty frame lock with a roomy interior and a carry bracket from a well-known maker. The limit is its rating on the maker's scale, and the specs mention touch and Wi-Fi controls that clearly do not apply to a keyed lock.
Who it's for
Cyclists making quick stops near work, shops or campus. Owners of costly bikes parked for long periods in busy areas should step up to a higher rated lock.
Pros and cons
- Hardened steel shackle
- Roomy interior opening
- Limited lifetime warranty
- Mid-level security rating
- No cable in the package
- Smart control specs are errors
Performance notes
The double deadbolt resists twisting and bolt cutters, and the disc-style cylinder is protected from picking and drilling. How secure it is also depends on what you lock to and how snugly the shackle fits around the frame and post.
Specifications
| Brand | Kryptonite |
|---|---|
| Model | 720018002031 |
| Dimensions & fit | |
| Shackle | 12.7 mm |
| Interior opening | 4 x 9 inches |
| Weight | 2.8 pounds |
| Construction & materials | |
| Material Type | Alloy steel |
| Finish Types | Protective vinyl cover |
| Included components | |
| Included Components | Mounting bracket, 2 keys |
| Warranty & support | |
| Warranty | Limited lifetime |
| Other details | |
| Lock Type | U-lock |
| Maker security rating | 6 out of 10 |
Closest rivals on specs
Seatylock Mason Lightweight Sold Secure Diamond Bike U Lock- Item Weight 2.8 vs 2.36 pounds (+19%)
Abus Granit X-Plus 540 U Lock- Item Weight 2.8 vs 3.5 pounds (-20%)
OnGuard Pitbull STD DT U-Lock with 4 ft Cable- Item Weight 2.8 vs 4 pounds (-30%)
Frequently asked questions
What comes with the Kryptonite Kryptolok Standard U-lock?
The highlights list the FlexFrame-U bracket and two keys. The components line names only a mounting bracket, and no cable is mentioned.
Is the Kryptonite Kryptolok Standard a smart lock?
No. It is a keyed U-lock, and the touch and Wi-Fi rows in the specs look like data errors.
Is the Kryptolok Standard weather resistant?
Yes. The additional features row says weather resistant, and the lock has a protective vinyl cover.