A Complete Daytime Running Light Set for City and Urban Riding

The Trek Ion 100 R and Flare R City Set is a front and rear light combination designed specifically as a Daytime Running Lights (DRL) solution for city cyclists. The set covers the full visibility requirement for urban riding - front, rear, and side visibility - in a compact and powerful package that includes everything needed out of the box: the Ion 100 R front light, the Flare R City rear light, two quick connect mounts, and a USB-C cable for charging.

Daytime visibility in urban environments is a different challenge from night riding. The competing visual noise of city streets - other vehicles, signage, pedestrians, bright shop fronts - means a standard rear flasher that is effective at night can become difficult to distinguish during the day. The Ion 100 R and Flare R City set is designed with this specifically in mind, using focused optics and an interruptive flash pattern engineered for daytime conspicuity rather than simply running a nighttime light pattern at higher output.

• Everything you need to be see and be seen on city streets, paths and beyond.
• Specifically designed focus, flash, and range flash patterns for powerful daytime visibility for up to 900m away
• Includes Ion 100 R, Flare R City, two quick connect mounts, and a USB-C cable
• Increased battery capacity offers up to 40% (Flare R City) and 36% (Ion 100 R) more run time than previous generations
• Visible fuel gauge LEDs make it easy to see battery status
• Integrated side lights increase visibility from more angles, perfect for city and urban use
• Blendr compatible for mounting to handlebar, stem, or helmets with optional accessories

900m Daytime Visibility, Side Lights, and Increased Battery Life

The focused flash patterns on both the Ion 100 R and Flare R City deliver daytime visibility from up to 900m - a distance that provides meaningful advance warning time to drivers and other road users approaching the cyclist from ahead and behind. The interruptive flash pattern is specifically designed to stand out from background visual noise in a city environment rather than blending into the general lighting conditions.

The Flare R City rear light incorporates integrated side lights - an addition to the standard rear-facing beam that increases visibility from the side as well as from directly behind. Side visibility is particularly important at junctions and roundabouts where vehicles approach from perpendicular angles and rear lights alone do not provide adequate warning. For city cycling where junction crossings are frequent, the integrated side lights address a genuine gap in standard rear-only light coverage.

Both lights offer significantly improved battery life compared to their previous generations - up to 40% more runtime on the Flare R City and up to 36% more runtime on the Ion 100 R. Visible fuel gauge LEDs on both lights provide a clear battery status indicator without requiring the rider to estimate remaining charge or connect to an app.

USB-C Charging, Blendr Compatibility, and Quick Connect Mounts

Both lights use USB-C charging - a modern charging standard that allows the same cable used for smartphones, laptops, and other devices to charge the lights, removing the need for a proprietary charging cable. The included USB-C cable covers the initial charge and the standard connection means compatible cables are widely available for travel and everyday use.

Blendr compatibility allows the Ion 100 R to be mounted to a handlebar, stem, or helmet using optional Blendr accessories rather than being limited to a standard handlebar strap mount. This mounting flexibility suits riders who prefer a cleaner cockpit integration or who want to use the front light as a helmet light for directing illumination more precisely. The two included quick connect mounts provide standard mounting for both lights without the need for additional accessories.

FAQs

What is included in the Ion 100 R and Flare R City set?

The set includes the Ion 100 R front light, the Flare R City rear light, two quick connect mounts, and a USB-C charging cable.

How far away are the lights visible during daytime?

Both the Ion 100 R and Flare R City are visible from up to 900m away in daytime conditions using their focused flash patterns.

Does the Flare R City have side lights?

Yes. The Flare R City features integrated side lights that increase visibility from the side as well as from behind - particularly useful at junctions and roundabouts.

How much battery life improvement do the new lights offer?

The Flare R City offers up to 40% more runtime than the previous generation rear light. The Ion 100 R offers up to 36% more runtime than the previous generation front light.

How do the lights charge?

Both lights charge via USB-C. A USB-C cable is included in the set.

Are the lights Blendr compatible?

The Ion 100 R front light is Blendr compatible, allowing mounting to a handlebar, stem, or helmet using optional Blendr accessories.

What is the difference between this set and the Ion 200 RT and Flare RT set?

The Ion 100 R and Flare R City set is focused on city and urban daytime running light use with integrated side lights and 900m daytime visibility. The Ion 200 RT and Flare RT set offers 200 lumens on the front light, 2km daytime visibility, and ANT+ connectivity. The City set is designed for urban stop-start riding while the RT set is designed for road cycling with connected device integration.