# Bontrager Flare RT: specs and price

**Price (US):** $59.99 (US MSRP $59.99. Stated verbatim as "$59.99" on the City Bikes retailer listing and "Cost: $59.99" in the RoadBikeRider review, both for the Bontrager Flare RT Rear Bike Light.), as of 2026-07-13. Among the 10 bike lights we track it is the cheapest; category median $85.
**Brand:** Bontrager
**Deskmark:** Bronze Deskmark — pay-blind category standing 19/100, #9 of 10 in class (independent, computed from sourced data, never for sale).

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $59.99 |
| Brand | Bontrager |
| Light type | rear |
| Max lumens | 90 |
| Runtime high hrs | 4.5 |
| Runtime low hrs | 13.5 |
| Battery capacity (mAh) | — |
| Charge port | — |
| Charge time hrs | — |
| Weight grams | — |
| Water resistance rating | IPX7 |
| Mount type | seatpost |
| Mode count | 5 |

## Where it stands

At $60, the Bontrager Flare RT is the cheapest of the 10 bike lights we track, where the median is $85. On the spec sheet, its max lumens of 90 is below the median of the 10, its runtime high hrs of 4.5 is above the median of the 8, and its runtime low hrs of 13.5 is above the median of the 8.

## What reviewers say

Two whitelisted cycling outlets tested this exact rear light hands-on and both rate it highly: DC Rainmaker (in-depth review, weighed on his own scale, ran a battery-depletion test) and Cycling Weekly (Editor's Choice, ridden through a wet winter). Praised for its tiny strawberry-sized form factor, weatherproofing and Garmin/ANT+ auto on-off; dinged for confusing modes, Bontrager's reused naming, and a Garmin control-panel quirk. DCR weighed the unit at 23g sans-mount versus the 32g/33g official figure. Neither outlet ran lab lumen or runtime numbers on the rear unit. (Based on 2 reviews, 2 lab-tested, 2018-07-18–2018-12-13.)

Praised: Compact, lightweight, tiny form factor (about the size of a strawberry); Smart ANT+/Garmin auto on-off connectivity works well; Weatherproof and reliable through wet, winter riding; Rear light held strong battery life, outlasting the front in DCR's solid-on depletion test.
Flagged: Mode settings can be confusing / easy to get lost in the array of modes; Bontrager reuses the 'Flare RT' name across generations, making the model hard to identify; Garmin default control panel can't hold a full light formation solid-on; needs the Connect IQ app or per-light control.
Disagreement: No head-to-head conflict; both hands-on testers are positive. The notable data split is weight: DC Rainmaker's scale read 23g sans-mount while Cycling Weekly cites 33g strap-and-all (matching Bontrager's 32g/33g spec), i.e. they measured different configurations rather than disagreeing. Neither outlet performed lab lumen or runtime testing on the rear Flare RT unit itself.
Sources: DC Rainmaker (2018-07-18, dcrainmaker.com), Cycling Weekly (2018-12-13, cyclingweekly.com)

## Frequently asked questions

**What do reviewers say about the Bontrager Flare RT?**

Two whitelisted cycling outlets tested this exact rear light hands-on and both rate it highly: DC Rainmaker (in-depth review, weighed on his own scale, ran a battery-depletion test) and Cycling Weekly (Editor's Choice, ridden through a wet winter). Praised for its tiny strawberry-sized form factor, weatherproofing and Garmin/ANT+ auto on-off; dinged for confusing modes, Bontrager's reused naming, and a Garmin control-panel quirk. DCR weighed the unit at 23g sans-mount versus the 32g/33g official figure. Neither outlet ran lab lumen or runtime numbers on the rear unit. Praised: Compact, lightweight, tiny form factor (about the size of a strawberry); Smart ANT+/Garmin auto on-off connectivity works well; Weatherproof and reliable through wet, winter riding; Rear light held strong battery life, outlasting the front in DCR's solid-on depletion test. Flagged: Mode settings can be confusing / easy to get lost in the array of modes; Bontrager reuses the 'Flare RT' name across generations, making the model hard to identify; Garmin default control panel can't hold a full light formation solid-on; needs the Connect IQ app or per-light control. (From 2 tester reviews, 2 lab-tested.)

**How much does the Bontrager Flare RT cost?**

The Bontrager Flare RT has a US price of $59.99 (US MSRP $59.99. Stated verbatim as "$59.99" on the City Bikes retailer listing and "Cost: $59.99" in the RoadBikeRider review, both for the Bontrager Flare RT Rear Bike Light.), as of 2026-07-13.

**How does the Bontrager Flare RT compare on price?**

At $60, the Bontrager Flare RT is the cheapest of the 10 bike lights we track, where the median is $85.

**What are the Bontrager Flare RT's key specs?**

Bontrager Flare RT (Bontrager): lightType rear, maxLumens 90, runtimeHighHrs 4.5, runtimeLowHrs 13.5, waterResistanceRating IPX7. Full sourced spec sheet verified 2026-07-13.

Source: https://www.trekbikes.com/us/en_US/equipment/bike-accessories/bike-lights/bike-rear-lights/bontrager-flare-rt-rear-bike-light/p/23999/ (trekbikes.com, accessed 2026-07-13)
Corroboration: https://www.roadbikerider.com/bontrager-flare-rt-rear-bike-light-review/ (accessed 2026-07-13)
Canonical: https://frontdeskreview.com/product/bike-lights/bontrager-flare-rt/
Cite: Per The Front Desk Review, the Bontrager Flare RT price of record was $59.99 as of 2026-07-13 — https://frontdeskreview.com/product/bike-lights/bontrager-flare-rt/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl