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Head-to-head · Best Bike Locks

KryptoFlex 710 Double Loop Security Cable vs Kryptonite KryptoLok

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Kryptonite KryptoLok comes out ahead by a clear margin (4.2 vs 3.0). The gap is mostly about short-stop urban riders needing moderate protection without high-security power tool resistance — read the strengths below before deciding.

KryptoFlex 710 Double Loop Security Cable
Ranked #7 in Best Bike Locks
KryptoFlex 710 Double Loop Security Cable
3 sourcesall derived$22.99as of Oct 2

The KryptoFlex 710 is a lightweight braided steel cable lock designed as a secondary security measure rather than a primary deterrent. bikelockwiki found that while its construction offers better resistance than flimsy alternatives, it remains vulnerable to small wire cutters and cannot stop determined thieves. At just 1.15 pounds with a 7-foot length, the lock is easy to carry in a backpack and secure multiple components like wheels or accessories simultaneously. This product fits riders seeking convenient protection for detachable parts alongside a strong U-lock but should be avoided by those needing robust defense against professional theft tools.

Strengths
  • — Lightweight design at only 0.52kg (1.1lb) for easy transport in a backpack
  • — 7-foot length allows securing multiple components like wheels and accessories simultaneously, per Bike Lock Wiki
  • — Braided steel construction provides better security than basic flimsy cable alternatives
Watch-outs
  • — Offers minimal security as it can be cut with small wire cutters
  • — Not durable enough to serve as a primary lock against determined thieves
$22.99 · Check Price on AmazonFull review →
Kryptonite KryptoLok
Higher ratedRanked #3 in Best Bike Locks
Kryptonite KryptoLok
4 sources$70as of Oct 2

The Kryptonite KryptoLok features a 12.7 mm hardened steel shackle and dual-locking mechanism that outdoorgearlab found provides strong resistance against bolt cutters and leverage attacks, making it suitable for urban commuting. The lock’s internal dimensions allow versatile parking of frames and wheels, while the Safe Key Program offers free replacements for lost keys. However, the included Transit Flex Frame Bracket is widely criticized for being difficult to install and prone to slipping during rides. Additionally, the integrated 10 mm cable offers negligible security as it can be cut in seconds, and the keyway requires precise alignment to operate smoothly. This lock fits riders needing moderate protection for short stops who do not require high-security against power tools.

Strengths
  • — 12.7 mm hardened steel shackle provides high resistance to bolt cutters and brute force attacks
  • — Dual-locking mechanism requires two separate cuts to defeat the lock, enhancing security against leverage attacks
  • — 4-inch by 9-inch internal dimensions offer versatile parking options for frames, wheels, and racks, per OutdoorGearLab
Watch-outs
  • — The included Transit Flex Frame Bracket is widely criticized for being difficult to install and prone to slipping
  • — The integrated 4-foot cable is thin (10 mm) and offers negligible security against cutting tools
  • — Keyway design can be sticky, requiring precise alignment of the key to unlock smoothly
$70 · Buy at contebikes.comFull review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

KryptoFlex 710 Double Loop Security Cable

At just 1.15 lb, this lock is significantly lighter than the Kryptonite Evolution Mini-7 (3.55 lb) and Kryptonite New York Diamond (5.2 lb), making it far easier to carry in a backpack for riders prioritizing portability over security. However, its braided steel construction offers minimal resistance compared to rigid options like the Kryptonite KryptoLok or Litelok X1 Plus, which provide robust defense against bolt cutters and leverage attacks.

Kryptonite KryptoLok

The Kryptonite KryptoLok offers stronger resistance to bolt cutters and leverage attacks than the flexible braided cables of the KryptoFlex 710 or Kryptonite KryptoFlex 410. However, its integrated cable is thin (10 mm) and negligible against cutting tools, similar to the weak point in the Kryptonite Evolution Mini-7, while lacking the advanced angle-grinder defense of the Litelok X3 Armoured.

Specs side-by-side

SpecKryptoFlex 710 Double Loop Security CableKryptonite KryptoLok
Weight1.15 lb2.85 lb
MaterialBraided Steel13mm hardened performance steel shackle
Length7ft (213cm)9 inches
WarrantyLifetimelimited lifetime warranty
Lock TypeDouble Loop CableDisc-Style Cylinder
Security Rating—6/10 (Kryptonite), Sold Secure Gold
Shackle Thickness—12.7 mm
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