Kryptonite Stronghold Anchor
Kryptonite

Kryptonite Stronghold Anchor

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Kryptonite Stronghold Anchor 330202 is a heavy-duty concrete anchor with a 16mm hardened carbon-alloy shackle and included 5/8" cement anchor bolts and masonry bits. Designed to lock bikes and e-bikes to solid masonry for long-term, high-security protection.

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Product Details

Overview & Technology

Kryptonite Stronghold Anchor (Mfr. #330202) is a purpose-built ground anchor for securing bikes, e-bikes and other high-value equipment to concrete or masonry. The unit uses a 16mm hardened carbon-alloy steel shackle that sits flush inside a domed, low-profile body when not in use, minimizing trip hazards and visual clutter. This anchor ships with 5/8" cement anchor bolts and two masonry drill bits so you have the hardware you need to install it into solid concrete. The hardened carbon-alloy construction resists cutting and sawing, while the domed, compact design helps prevent pry leverage when a lock is engaged.

Key Features & Real-World Benefits

High-strength shackle: The 16mm hardened carbon-alloy steel shackle offers robust resistance to bolt cutters and hand tools commonly used in theft attempts. In practice this means longer delay and higher deterrence against opportunistic thieves. • Flush, domed body: Shackle lays flat when not in use — safer and less obtrusive in garages, courtyards, and bike rooms. • Complete anchor kit: Comes with 5/8" cement anchor bolts and masonry bits for secure installation into solid concrete. • Low profile footprint: Compact mounting area makes it easy to position in bike storage zones without blocking walkways.

Fit, Installation & Compatibility

The Stronghold Anchor is designed for installation into solid concrete or masonry — not hollow block, drywall, or timber. The included 5/8" cement anchor bolts fasten the body securely to a concrete substrate; use the provided masonry bits to drill the correct diameter and depth. For best results, install into at least 3–4 inches (75–100mm) of sound concrete and follow the bolt manufacturer torque specs. The 16mm shackle accommodates most standard U-locks and many chain links and inline locks. It pairs particularly well with Kryptonite U-locks and heavy-duty chain locks; measure your lock shackle diameter and clearance to ensure a comfortable fit. If you’re unsure about your concrete or need a recessed install, consult a professional mason or contractor.

Who Should Buy the Stronghold Anchor

This anchor is aimed at riders who store high-value bicycles or e-bikes at home, in shared bike rooms, or in semi-public garages and want a permanent, high-security attachment point. If you own an e-bike or high-end road/gravel rig and want a robust way to lock it to the ground, this offers better protection than lightweight wall brackets or removable posts. It’s also a great choice for landlords and property managers installing a permanent bike security point in residential buildings, workplaces, or commercial bike storage areas. Those renting or needing portable solutions should consider removable anchors or ground anchors designed for temporary installs.

Key Features

  • ✓ 16mm hardened carbon-alloy steel shackle for superior cut resistance
  • ✓ Shackle lays flat inside domed body when not in use
  • ✓ Includes 5/8" cement anchor bolts and two masonry drill bits
  • ✓ Low-profile footprint reduces trip hazard and visual clutter
  • ✓ Durable black finish resists corrosion and blends with surroundings
  • ✓ Ideal permanent anchoring solution for e-bikes and high-value bikes
  • ✓ Designed for installation into solid concrete or masonry surfaces

Specifications

Misc Black

Product Identifiers

Vendor Item # 330202
UPC 720018330202

Frequently Asked Questions

What surfaces can I install the Stronghold Anchor into?

The Stronghold Anchor is designed for solid concrete and masonry installation. It is not suitable for hollow block, drywall, wood, or thin pavers. For unsupported or hollow substrates, consult a structural professional or choose a product engineered for that application.

Which locks will fit the 16mm shackle?

The 16mm hardened shackle accommodates most standard U-locks and many heavy chains and inline locks. Measure your lock's shackle diameter and clearance before purchase; it pairs particularly well with Kryptonite U-locks and heavy-duty chains.

Are tools included for installation?

The kit includes the 5/8" cement anchor bolts and two masonry drill bits needed to prepare the holes. You will need a hammer drill and appropriate safety gear to complete the installation; torque wrench and concrete cleaning tools are recommended for a secure fit.

Can the anchor be removed or relocated later?

Yes — the anchor is mechanically fastened with cement anchor bolts, so it can be unbolted and removed, but the process will leave drilled holes in the concrete. For relocations, plan removal and patching of the concrete as needed.

How weather-resistant is the Stronghold Anchor?

The Stronghold Anchor has a durable black finish designed to resist corrosion in typical outdoor conditions. For coastal or high-corrosion environments, periodic inspection and maintenance (cleaning and light corrosion protection) are recommended to extend service life.

Do I need a professional to install it?

Many mechanically-inclined users can install the anchor with a hammer drill and the included bits, but if you are unsure about your concrete condition or require a recessed or flush-mounted install, hiring a professional mason or contractor is recommended to ensure long-term security.

Buying Guide

When buying a permanent ground anchor, prioritize substrate compatibility, shackle thickness and real-world installation needs. Choose an anchor sized for solid concrete at least 3–4 inches deep and make sure the shackle diameter fits your preferred U-lock or chain. Consider how the anchor will be used: for daily locking in a shared stairwell, a low-profile domed design reduces trip hazards; for public or exposed locations, pair the anchor with a high-security lock and follow professional installation guidelines to maximize theft deterrence.

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