TREK

Trek launches new lightweight road e-bike with carbon frame and solid 185 km of range

Trek has unveiled the Domane+ SL, a lightweight electric road bike with a carbon frame. The e-bike features a TQ HPR40 200 W mid-drive motor and a 580 Wh battery, which is said to deliver 40 Nm of torque and 115 miles (185 km) of range. Available in three configurations, it comes with 35 mm tires and tops out at 28 mph (45 km/h).

Trek has expanded its road e-bike portfolio with the Domane+ SL e-bike. The new model follows the company’s recent launch of the Inbound+ and the District+ e-bikes. The Domane+ SL is a performance-focused electric road bike designed for endurance riding. It is based on Trek’s previous-generation Domane endurance road bike platform and features a carbon frame. At 24.5 lbs (11.1 kg), the e-bike is considerably lighter than many conventional electric bikes. 

Interestingly, Trek also offers an aluminum frame version of the Domane+, although it weighs around 3 kg (6.6 lbs) more than the carbon-fiber Domane+ SL. The electric road bike is powered by TQ’s compact HPR40 200 W motor, which is said to provide 28 mph (45 km/h) top speed and 40 Nm of torque. Plus, you can either choose a 360 Wh or 580 Wh battery pack. The company claims up to 113 km (70 miles) of range with the smaller battery pack and 185 km (115 miles) with the larger battery pack. 

Moreover, the e-bike’s carbon frame can handle a maximum payload of up to 275 lbs. It is equipped with a TQ color LED display with Bluetooth and ANT+ connectivity, providing essential riding information. Stopping power comes from hydraulic disc brakes with 160 mm rotors. On top of these features, the Domane+ SL has the Trek Central companion app support for motor tuning and other adjustments. 

The new Domane, with assistance...The Domane+ SL is based on the same fundamental concept as the standard (non-electric) Domane launched last month: a lighter, simpler road endurance platform featuring clearance for 40mm tires (stock 35mm tires), Trek’s Road Endurance geometry, a higher handlebar position, and a carbon seatpost designed for comfort.

I’ve already covered the standard bike in detail in my Domane Gen 5 review, so I won’t repeat the full analysis of IsoSpeed. In short: Trek decided that the comfort advantage IsoSpeed ​​still offered didn't justify the added weight, complexity, and proprietary hardware—especially now that most Domanes run high-volume tires.

This matters here because the Domane+ starts with that refined, improved Domane platform. Trek then adds the e-bike components.

Within Trek’s e-bike lineup, this places the Domane+ SL firmly in the road category. Compared to the Checkpoint+, Trek positions it as lighter and offering greater range, making it better suited for general riding rather than gravel-specific use. In other words, this isn't just a gravel e-bike fitted with slick tires; it is the electric version of Trek’s most versatile road bike.

The Domane+ SL isn't as mechanically simple as the standard Domane—it couldn't be. It features a drive unit, internal battery, display, remote buttons, lights, wiring, and electronic shifting. Yet, the integration is cohesive: the main battery powers the front and rear daytime running lights—a 450-lumen Supernova Starstream Mini up front and a 35-lumen Trek Flare C at the rear (in North America)—as well as the rear derailleur on AXS-equipped models. One main battery. One charging method. The rear light has a minor setup issue: a traditional saddlebag can block it. The best solution is to use the Domane+’s front triangle mounts and one of Trek’s compatible Adventure frame bags; this keeps tools and spares away from the seatpost area and leaves the light visible.

The ride feel of the Domane+ is similar to that of the non-electric Domane, which is great. The riding position is accessible and comfortable, yet firm enough to still convey the feel of a high-performance road bike. It isn’t a race bike with twitchy handling; it’s a fast, long-distance road bike.

The 35mm tires, under-bar padding, and Trek’s RSL seatpost work in perfect harmony. The ride is smooth; it absorbs harsh impacts well and never left me feeling drained. I stepped off the bike after a 160km ride—completed in four and a half hours—feeling refreshed and without any lingering discomfort in my hands, back, saddle area, or shoulders.

However, the Domane+ isn't quite as fluid or elegant as the non-assisted Domane. No e-road bike I’ve tested has cracked the code to combining the refined smoothness, low weight, and exceptional performance of the best non-assisted road bikes. The Domane+ comes closer than many, but there is still a sense of mass low down in the bike’s movement—a feeling that every input has to pass through a heavier object before translating into motion. Like most e-bikes, it feels a bit clunky.

I imagine brands will eventually overcome this lack of fluidity, but it still feels like that’s a few generations away.

Available in three configurations and six sizes (XS, S, M, ML, L, and XL), the Trek Domane+ SL starts at $6,500/€5,999. Buyers can now purchase the e-bike directly from Trek’s official website. 

by Autonews