GERDA ULTRA 320/165W U-Lock Bicycle Lock 14mm Shackle Sliding Keyhole Cover Black

Product Overview

The GERDA ULTRA 320/165W U-LOCK is a robust bicycle lock designed for secure bike fastening in urban and high-theft environments. Its primary users are cyclists seeking premium protection for valuable bicycles, particularly when vehicles must be left unattended in less secure public spaces for extended periods. The lock is constructed with a 14 mm thick, double-bolted steel shackle encased in a PVC sleeve to prevent frame scratches, and it features resistance to adverse weather conditions.

A key differentiator of this particular model is the sliding keyhole cover, which safeguards the locking mechanism from dust, grit, and moisture intrusion. This feature minimizes maintenance needs and extends the functional life of the lock, reducing risk of lock failure and call-backs for fleet operators and bike rental schemes. The GERDA ULTRA 320/165W is especially suitable for municipalities, campus operators, and shared micro-mobility service providers requiring reliable and low-maintenance bicycle security devices.

Key Features

• Double-bolted 14 mm steel shackle ? round profile optimizes resistance to cutting and prying attacks


• PVC protection sleeve ? prevents contact scratching or frame damage during use


• Sliding keyhole cover ? shields lock mechanism from dust, sand, mud, and other contaminants


• Symmetrical key design ? simplifies handling and reduces risk of broken keys on-site


• Weather resistant ? suitable for year-round outdoor deployment in varying climates


• Transport bracket included ? enables secure lock carriage on bicycle frame during transit


• Premium Protection classification ? suitable for securing higher-value bicycles in public locations

Technical Specifications

• Shackle Material: Hardened Steel


• Shackle Diameter: 14 mm


• Shackle Profile: Round


• Locking Mechanism: Double-sided bolt


• Sleeve Material: PVC


• Key Type: Symmetrical key


• Keyhole Cover: Sliding, integrated


• Weather Resistance: Yes


• Class: GERDA Premium Protection


• Accessories Included: Symmetrical key, transport bracket

Applications

Ideal for securing bicycles in public city spaces, workplaces, universities, transport hubs, and bike-sharing stations, particularly where high-value assets are at risk. Recommended for longer-term locking in environments with elevated theft risk, such as urban streets, transport corridors, and around high-footfall infrastructure. Suitable for fleet operators, rental businesses, and end-users who require sturdy, low-maintenance security.

Packaging & Shipping

Standard export packaging. Unit includes the U-lock, one symmetrical key, an integrated sliding keyhole cover, and a transport mounting bracket.