Kryptonite Keeper Folding
Keeper Folding
Keeper Folding
Keeper Folding
Keeper Folding
Kryptonite

Kryptonite Keeper Folding

In Stock

Compact, travel-friendly folding lock with 3mm hardened steel links and included frame bracket. Offers moderate 5/10 security, two keys, and $500 anti-theft protection.

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Available Options

Option Price Availability
Kryptonite, Keeper 585, Folding Lock, Key, 85cm, 2.8', 3mm, Black — In Stock
Kryptonite, Keeper 510, Folding Lock, Key, 100cm, 3.3', 3mm, Black — In Stock

Product Details

Overview & Technology

Kryptonite Keeper Folding is a compact, everyday folding lock engineered for riders who need a lightweight, packable deterrent for urban and road-side stops. Its construction uses 3mm hardened steel links connected by rivet joints for smooth folding and reliable resistance to casual attacks. The lock ships with a frame-mount bracket for secure transport and two keyed cylinders with Kryptonite’s Key Safe Program for easy key replacement. Rated 5/10 for security, the Keeper Folding is best for low- to moderate-risk situations like café stops, commuter racks, and short errands where portability and convenience matter most.

Key Features & Construction

The Keeper Folding’s core is a series of 3mm hardened steel links forming an 85cm (2.8') or 100cm (3.3') loop depending on the variant. Each link is heat-treated for improved stiffness and coated in a durable black finish to resist scratches and corrosion. The compact rivet joints allow the lock to fold small for easy storage in the included bracket or a bag. Highlights of the build: • 3mm hardened steel links for moderate cut resistance • Precision keyed lock cylinder with two keys included • Frame mount bracket for secure, rattle-free transport • Available $500 Anti-Theft Protection—Kryptonite’s claim coverage

Fit, Size & Compatibility

The Keeper Folding is available in two lengths: 85cm (Keeper 585) and 100cm (Keeper 510). The compact folded footprint and included frame bracket make it compatible with most road, commuter and hybrid frames; the bracket typically mounts to a seat tube or down tube using supplied hardware. Check clearance near bottle bosses and cable routing before mounting. The flexible folding design lets you secure both wheel and frame to medium-diameter posts or bike racks. Because the chain is relatively thin (3mm), use the longer 100cm variant if you need extra reach to loop through larger fixed objects or to include both wheels and frame in the lock-up.

Who It's For

This lock is aimed at road cyclists, commuters and campus riders who prioritize portability and weight over maximum resistance to theft. If you make frequent short stops—coffee, errands, quick photos—the Keeper Folding gives you a fast, compact solution that stows cleanly on the frame. It’s not intended as a primary high-security lock in high-risk areas. Riders who routinely leave bikes unattended for long periods or in high-theft zones should consider a heavier-duty U-lock or chain with a higher security rating and thicker links.

Key Features

  • ✓ 3mm hardened steel links for lightweight, everyday security
  • ✓ Available in 85cm and 100cm lengths to suit different needs
  • ✓ Includes frame-mount bracket for compact, rattle-free transport
  • ✓ Two keys included plus Kryptonite Key Safe replacement program
  • ✓ Security Rating 5/10 — ideal for short stops and commuting
  • ✓ $500 Anti-Theft Protection available with registered purchase
  • ✓ Slim folding profile packs easily into a saddlebag or bracket
  • ✓ Black durable finish resists scratches and corrosion

Specifications

Bracket Frame mount bracket (included)
Internal Lock Size Metric 85cm
Lock Type Key
Primary Color Black
Thickness In mm 3mm
Internal Lock Size Imperial 2.8'

Product Identifiers

Vendor Item # 004110
UPC 720018004110

Frequently Asked Questions

What is the difference between the Keeper 585 and Keeper 510?

The primary difference is length: the Keeper 585 is 85cm (2.8') while the Keeper 510 is 100cm (3.3'). Both use 3mm hardened steel links and share the same cylinder, bracket and security rating. Choose the 510 if you need extra reach to lock both wheels and the frame to larger objects.

How secure is a 3mm link folding lock compared to a U-lock?

A 3mm link folding lock like the Keeper offers good portability but less cut resistance than thicker U-locks or heavy chains. With a 5/10 security rating, it deters opportunistic thieves but is not recommended for leaving a bike in high-risk or overnight locations where more robust locks are advised.

Can I replace lost keys?

Yes — Kryptonite provides a Key Safe Program that lets you order replacement keys using a key code supplied with the lock. Keep the key code in a safe place and register your lock if prompted; two physical keys ship with each unit.

Is the bracket compatible with all frames?

The included frame-mount bracket fits most road and commuter frames and mounts typically to the seat tube or down tube using supplied hardware. If your frame has unconventional tubing or limited clearance near bottle cages and cables, the bracket may not fit perfectly — measure before installing or carry the lock in a bag.

What does the $500 Anti-Theft Protection cover?

Kryptonite’s Anti-Theft Protection provides up to $500 in reimbursement for covered losses when your bike is stolen while locked with an eligible Kryptonite lock and the claim meets program terms. Claims usually require proof of purchase, lock registration, and filing within specified timelines. Check Kryptonite’s policy for full details.

Is the lock weatherproof?

The Keeper Folding has a durable weather-resistant coating and sealed cylinder designed for everyday exposure, but like any lock it benefits from occasional lubrication and care in very wet or salty environments. Rinsing and drying after exposure to heavy rain or coastal conditions will extend life.

Buying Guide

When choosing a folding lock, balance portability and security: thinner links fold smaller and weigh less but offer reduced cut resistance. Decide whether you need the shorter 85cm for minimalist carry or the 100cm for extra reach to lock both wheels and frame. Consider how you'll transport the lock — included frame brackets are convenient, but many riders prefer a saddlebag or backpack for cleaner fit. Also evaluate environment and duration of locking: pick a folding lock for quick urban stops and mixed-use rides, but upgrade to a heavy-duty U-lock or chain if you routinely leave your bike unattended for long periods or in high-risk areas.

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