Best e-mountain bike of 2026? Thömus Lightrider E_MAX on test

The Thömus Lightrider E_MAX presents a distinctive take on the e-mountain bike concept, emphasising lightness, efficiency, and a ride experience closer to traditional mountain biking rather than the typical high-power electric models. At just 17.5 kg in a size M, it is the lightest bike in a recent group test of 30 eMTBs, featuring a compact 400 Wh battery and a modest 140/130 mm suspension travel. Powered by the Swiss-made maxon BIKEDRIVE AIR S motor, which weighs only 2 kg, the Lightrider E_MAX delivers impressive torque and power despite its small battery, challenging the notion that bigger batteries and heavier builds are essential for capable electric mountain bikes. The bike’s design is sleek and understated, with a full carbon frame and a slim downtube that houses the integrated battery. Practical touches include an integrated rear light near the rear axle, a tool mount on the top tube, and ample space for a large water bottle or an optional 250 Wh range extender. Internal cable routing keeps the cockpit clean, while rubberised frame protectors help reduce noise and wear. However, some details such as the fiddly charging port cover and a hard-to-read SAG indicator on the rear shock reveal room for improvement in user-friendliness. Spec-wise, the Lightrider E_MAX features a high-end FOX 36 SL fork, ESI foam grips for lightweight damping, and a configurable build via Thömus’ online configurator, allowing buyers to personalise components like suspension, wheels, brakes, and drivetrain. Despite the smallest battery in the test, the bike’s slow 2 A charger is a drawback, making recharge times longer than competitors. The motor’s peak output of 620 watts and 90 Nm torque, combined with support up to 400%, ensures the bike performs strongly on trail, especially given its lightweight and agile nature. Thömus supports the Lightrider E_MAX with a unique retail and community approach centred around its 13 Swiss Bike World locations, which offer personalised advice, bike fitting, diagnostics, and workshops. Their flagship facility near Bern, adjacent to the Swiss Bike Park, provides an ideal environment for testing and honing riding skills across all levels. This community-driven ethos complements the bike’s purist philosophy, positioning the Lightrider E_MAX as a compelling option for riders seeking a more traditional mountain bike feel with electric assistance. Overall, the Thömus Lightrider E_MAX stands out as a redemptive alternative to the heavier, battery-dominant eMTBs dominating the market. Its lightweight build, efficient motor system, and thoughtful design make it a strong contender for riders prioritising agility and ride quality over raw power and range. While some practical details could be refined, the bike’s performance and bespoke options suggest it could carve out a niche among discerning e-mountain bikers looking ahead to the 2026 season.