Kleuster, a Lyon-based manufacturer established in 2012, specializes in electric-assist cargo bikes specifically designed for professional urban logistics. Partnering with Renault Trucks since 2022, the two companies jointly developed the KLEUSTER 350, a cutting-edge cargo bike engineered for intensive professional use in urban settings.

The KLEUSTER 350 features advanced technical innovations, including a chainless transmission system, electronically controlled crank sets, and front and rear suspensions for optimal rider comfort and stability and high efficient and silent direct in-wheel drives. The cargo bike’s modular and swappable battery design allows a range of up to 35 kilometers, addressing the demands of busy urban delivery professionals.

Meeting the high demands of professional urban logistics

KLEUSTER required a highly efficient, robust, and adaptable motor solution to withstand the rigorous demands of professional urban logistics. Their criteria were clear: exceptional reliability, durability, minimal maintenance, and seamless integration with advanced the chainless e-pedal transmission. The solution needed to eliminate traditional mechanical drivetrains, enhancing vehicle uptime and significantly reducing maintenance costs, all while ensuring compliance with stringent European regulatory standards.

The GEM motors solution: advanced in-wheel drive technology with peak torques

GEM Motors delivered a sophisticated, industrialized in-wheel drive solution (models G1.1 and G1.3), uniquely suited to high KLEUSTER’s requirements. These motors offer outstanding performance with peak torques of 120Nm (G1.1) and 170Nm (G1.3), ideal for handling heavy loads and steep urban gradients. GEM Motors’ integrated motor controllers remove the need for mechanical transmissions, significantly reducing maintenance and enhancing overall reliability.

The solution underwent extensive validation tests, including vibration up to 20g, electromagnetic compatibility (EMC), temperature shock, environmental durability, and ingress protection (IP).

Technical specifications and features of cargo bike

1. Motor Models: GEM in-wheel drive G1.1 (120Nm) and GEM in-wheel drive G1.3 (170Nm) with EPAC homologation
2. Transmission: Chainless electronic control
3. Battery: 1,5 kWh modular swappable system, up to 35 km autonomy
4. Safety Standards: compliant with EN 15194 and EN 17860 standards; additional safety features validated by UTAC following the EU 168/2013 regulation
5. Comfort Features: Front and rear suspension
6. Turning Radius: 2.4 meters, ideal for dense urban areas

Improved reliability and enhanced professional efficiency

The implementation of GEM Motors’ advanced solution transformed the KLEUSTER 350 into an industry-leading cargo bike, noted for its reliability and durability. By replacing conventional mechanical systems with electrical controls, the KLEUSTER 350 achieved superior uptime, reduced operational costs, and an elevated riding experience, directly addressing the critical needs of urban logistics professionals.

Finally, KLEUSTER conducted tests on the Transpolis proving ground nearby Lyon, running validation tests in a similar fashion than automotive validation tests. Three KLEUSTER 350 operated day and night for over 40 days to achieve a combined 30’000 kilometers with ambition to proof test its reliability. The tests confirmed that the KLEUSTER 350 and therefore its components fully fulfilled the reliability requirements set by the project.

Scaling up production and continuous innovation

The KLEUSTER 350 production began in Summer 2025, with ambitious volume plans.

GEM Motors continues to prioritize innovation, with forthcoming motor designs delivering improved torque and superior thermal management to meet ever-evolving professional requirements. GEM motors will also continue to support the ambitious product development roadmap from KLEUSTER.

“At GEM Motors, we are committed to pushing the boundaries of electric mobility. Our collaboration with Kleuster demonstrates our capability to deliver robust, reliable, and cutting-edge motor solutions for demanding applications. We’re excited to continue supporting urban professionals by providing technologies that meet their evolving demands and contribute to sustainable urban developments,” commented partnership Simon Mandelj, CEO and Founder, GEM Motors.

“At KLEUSTER, we are really pleased of our collaboration work with GEM Motors. We initiated this partnership with numerous requirements which were all fulfilled timely, when not exceeded. The GEM Motors team is composed of highly professional and committed people that makes us extremely confident. The GEM Motors solutions delivered on expectations throughout our reliability tests period. Last but not least, customers who tested the KLEUSTER 350 noted the precision and robustness of this innovative technology”, added Okan Cavusoglu, CEO, Kleuster.