Kryptonite Kryptoflex Looped Cable
Kryptonite KryptoFlex looped cable is a lightweight, vinyl-covered braided-steel cable with double-looped ends for pairing with U-locks or padlocks. The 5mm x 76cm (2.5') size is perfect as a secondary lock or U-lock extender.
Add to CartAvailable Options
Product Details
Overview & Technology
Key Features & Real-World Benefits
Fit, Compatibility & Variants
Who It's For
Key Features
- ✓ 5mm braided-steel core balances flexibility with everyday cut resistance
- ✓ 76cm (2.5') length with double-loop ends for broad U-lock compatibility
- ✓ Vinyl sleeve protects paint and reduces noise while riding or carrying
- ✓ Double-loop design lets you secure wheels, frame, and accessories together
- ✓ Lightweight and coiled for easy packing under saddle or in bags
- ✓ Available in longer, thicker variants for higher-security or larger objects
Specifications
Product Identifiers
Frequently Asked Questions
Can I use this cable as my primary lock?
The KryptoFlex cable is best used as a secondary lock or to extend a U-lock's reach. While the braided steel provides deterrence against opportunistic thieves, cable locks—even quality ones—are more vulnerable to cutting tools than hardened U-locks or chains. For high-theft areas or overnight parking, use a heavy-duty U-lock or chain as your primary.
Will the double-loop ends fit my U-lock?
Yes. The double-looped ends are designed to accept the shackle of most U-locks and many padlocks. Thread one loop through the wheel or accessory, then pass the U-lock through the loop to integrate the cable into your primary locking setup.
Is the vinyl coating weatherproof?
The vinyl sleeve helps repel moisture and prevents rust contact with the frame, but it does not make the cable fully weatherproof. Regular exposure to harsh conditions can still lead to corrosion over time. Store the cable dry when possible and inspect it periodically for signs of wear or surface rust.
How should I carry the cable on my bike?
Because it’s lightweight and coiled, you can stow the KryptoFlex under a saddle, inside a pannier, in a jersey pocket, or strapped to the frame with a small Velcro strap. Kryptonite also offers mounting solutions for some locks, but this cable variant ships without a bracket.
How do the other KryptoFlex variants differ?
Kryptonite offers several sizes and thicknesses: the 5mm x 76cm is compact and portable, while 10mm models and the 30' version offer greater thickness or length for securing multiple bikes or wrapping around large fixtures. Thicker cables increase cut resistance but add weight and bulk.
Can this cable be cut with bolt cutters?
No lock is entirely cut-proof. Thicker cables resist smaller tools, but bolt cutters and powered tools can compromise most cable locks. Use this cable as part of a layered security strategy—paired with a hardened U-lock or in lower-risk situations.
Buying Guide
When choosing a bike cable lock, consider length, diameter, and how you intend to use it. Shorter, thinner cables like the 5mm x 76cm KryptoFlex are light and portable—perfect for commuters and riders who want a secondary lock or an extender for their U-lock. Thicker diameters (10mm) or longer lengths are better when you need to loop around larger objects or secure multiple bikes. Think of cable locks as one layer in a multi-lock approach: pair a cable with a hardened U-lock for best results. Check for a protective sleeve to avoid frame damage, and pick a length that fits your typical parking scenarios without excess slack that could be exploited by thieves.
Ready to order?
Shop with confidence at Scenders — premium cycling parts, fast shipping.
View Full Product