Bontrager Ion 100 R
and Flare R City
The Bontrager Ion 100 R is a daylight-visible
headlight that provides 100 lumens of broad,
balanced light to see and be seen in the city,
day or night.
The Bontrager Flare R City is a daylight-visible
tail light that provides 35 lumens of broad,
balanced light to be seen in the city, day or night.
Each light in its brightest mode may be visible
from over 400 meters (0.25 miles), with a broad
light pattern ideal for riding in city and urban
environments. Proper setup and selection of
mode is critical to maximize visibility and riding
safety.
Install the lights with the power button facing up
and the lens perpendicular to the ground. This
position will maximize visibility for cars and for
illuminating your environment. The daytime flash
modes are the brightest, so are best reserved
for day use. Night steady and night flash modes
are designed for use in the dark. These lights
also feature an ambient light sensor that can
automatically select the best flash mode for your
environment.
About this manual
This manual is for Bontrager lights Ion 100 R
(headlight) and Flare R City (tail light).
Please read this entire manual, especially
the safety information. Check for updates at
trekbikes.com
IMPORTANT:
Check your local lighting laws.
Flashing lights and full brightness may not be
allowed in all locations. Ion 100 R and Flare R
City do not conform to the German road traffic
regulation StVZO.
For more information
If you need help not offered by this manual, talk
to your Bontrager retailer or visit trekbikes.com.
Bontrager Ion 100 R
and Flare R City
bontrager.com
Installation
Before first use, charge the battery.
To install the Ion 100 R
1. Place the quick-connect on the handlebar
with the hook in front.
Front of bike
2. Stretch the strap under
the bar and connect to
the hook.
NOTE:
Use the second hook to
latch excess strap.
3. Slide the ION 100 R
onto the bracket until
it clicks.
The power button should
be facing up and the lens
of the light should be
perpendicular to the road.
To install the Flare R City
1. Install the quick-connect bracket on the
seatpost with the lever to the drive side of the
bike. When installed properly, the lens will be
perpendicular to the ground and the saddle
icon will point the same direction as the
saddle on the bike.
2. Stretch the strap
around the seatpost and
connect to the hook.
3. Slide the light onto the
bracket.
Removal
To remove the Ion 100 R
Press down on the tab and
slide the light away from
the lever.
Alternatively, you can remove
the entire quick-connect
bracket, with the light
attached.
To remove the Flare R City
Press down on the tab and
slide the light away from
the lever.
Alternatively, you can remove
the entire quick-connect bracket,
with the light attached.
Operation
To power on, press the power
button.
The light will be in the output
mode last used.
To power off, press and hold
the power button until the light turns off.
Auto brightness
The lights automatically adjust their brightness
for maximum visibility and battery conservation.
The Ion 100 R and Flare R City get brighter as
ambient light increases (day), and dimmer as
ambient light decreases (night).
NOTE:
When auto brightness is enabled,
Ion 100 R modes are 100, 50, 5, and auto flash.
Flare R City modes are auto flash, or auto
steady.
To disable or enable auto brightness, press and
hold the power button 8 seconds. The main LED
will flash once.
2. Remove
1. Press
1. Press
2. Remove
Power
button
Status
LED
List of parts
Ion 100 R
Headlight with sealed lithium-ion
battery
(USB rechargeable)
Quick-connect bracket for headlight
(PN W527649)
Fits any size round handlebar, 22.2mm to 35mm.
Charger cable
(PN W327765)
Micro USB cable can be
plugged into a computer
or wall adapter
(adapter not included).
Use with a quality CE or UL approved USB
charger rated for 500 mA or greater.
Flare R City
Tail light with sealed lithium-ion
battery
(USB rechargeable)
Quick-connect bracket for tail light
(PN W533846)
Easily mounts to the seatpost of any Trek city,
road, or mountain bike. Features a built-in 16
degree offset to place the lens perpendicular to
the ground with a normal seatpost angle.
Accessories
The Ion 100 R and Flare R City lights are
compatible with these optional mounting
systems. Please see your Bontrager retailer
for details.
Bontrager helmet mount
(PN 428462)
• Strap mount easily attaches a Bontrager Ion or
Flare light to most helmets.
Bontrager Lithos helmet Blendr
accessory mount
(PN 516635)
• Blendr mount integrates into the Bontrager
Lithos helmet.
Bontrager seatstay
bracket
(PN418932)
• Adjustable plastic
mount fits low on
the frame.
Bontrager seatpost
clamp
(PN 418932)
• Rigid clamp with
adapters for
seatposts from
22.2-31.8mm.
Bontrager seat pack
clip
(PN W528503)
Clip-style light mount
attaches to seat bags,
backpacks, belts, and
pockets.
Bontrager Blendr
accessories
• Attachment system
for Bontrager Blendr
stems fits a variety of
accessories. See your
Bontrager retailer for details.
BT16_ION_100_R_FLARE_R_CITY_V1
Main LED
