The electric enduro bike market is heating up with the arrival of a new challenger, the Radian EXR. This Dutch start-up has unveiled its latest creation ahead of a planned Q4 2027 launch, and on paper at least, it's going after the Stark Varg EX in every measurable way.
One of the key areas where the Radian EXR is focusing its attention is battery life. The bike boasts an 8.6kWh Endurance battery pack that can be swapped out in under 30 seconds without tools.
This rapid battery swap technology has the potential to revolutionize racing and longer enduros, where charging downtime can be a major disadvantage for electric bikes.

However, it's worth noting that this new feature also comes with some practical limitations, such as the need for a support vehicle to carry spare batteries.
The Radian EXR also boasts an impressive spec sheet, with 70hp and 1,060Nm of torque at the rear wheel. It weighs in at 125kg with the larger battery fitted, while a smaller 5.8kWh Sprint pack drops the weight to 113kg.
For comparison, the Stark Varg EX Alpha pushes things even harder in outright horsepower terms, but it carries a smaller 6.5-7.2kWh battery and weighs around 118-120kg.

The Radian EXR's focus on usability and endurance may give it an edge over the Stark Varg EX in certain areas, particularly when it comes to long-distance riding and rapid battery swaps.
Overall, the arrival of the Radian EXR is a significant development in the electric enduro bike market, and it will be interesting to see how it stacks up against its rivals in terms of performance and practicality.
The Radian EXR's focus on usability and endurance may give it an edge over the Stark Varg EX in certain areas.
