About Us


Andrew Harris

A serial entrepreneur and senior at Cal Berkeley, Andrew noticed a huge demand for Sur Ron knowledge and aftermarket parts. Andrew is passionate about sustainable transportation alternatives and aims to solve the many problems with city commuting. He also plays MCLA D1 lacrosse and spends his free time working on his Sur Ron.

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Aaron Tamura

Aaron, our chief marketing officer, is currently a junior attending Cal Berkeley as an Economics major. He is passionate about photography and cinematography, with his background laying in media production. As an advocate for clean energy and an electric bike owner, he was drawn to the team.


Chief of Staff

Richard Zhang

A senior majoring in Mathematical Economics at Pitzer College, Richard was fascinated with the Sur Ron community and wanted to contribute his expertise in operations management towards the industry. He is a basketball enthusiast and an avid Sur Ron rider.


cfo &
stunt rider

Sur Ronster

Sur Ronster is our leading pro rider. He is studying mathematical economics at college and leads the SRPS finance department. He has gained a considerable following on social media and never fails to put on a show. Catch him riding in style as our sponsored stunt rider!

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Elliot Balmer

Elliot is a junior at Cal majoring in Economics with a passion for the outdoors and a want to see his work become tangible for others to use. With a background in business consultation, he came to the team to become involved in the ebike scene and Sur Ron community.


powertrain engineering lead

Tijmen Sep

A junior at Cal majoring in Mechanical Engineering, Tijmen was wanting to find the area for his expertise to be used hands-on. He loved the EV and bike industries and was drawn to the team immediately at the thought of involvement with ebikes.  


dynamics & suspension
engineering lead

Themistocles Hadjiioannou

Themistocles is a senior at Cal Berkeley majoring in Mechanical Engineering. Having a vast background in robotics as well as electric racing vehicles, he gravitated towards a team environment where he could perform high impact work in the electric vehicle space.


Engineering lead

Gavin May

A junior majoring in Mechanical Engineering at Cal Berkeley, Gavin has background in combustion engine and electric vehicle building and designing. He wanted to work in a hands on and creative space and brought his engineering expertise to the team.

Software & Electrical
engineering lead

Arya Bastani

Arya is a junior at Cal majoring in Computer Science and Physics. Being an outdoor oriented person and looking for a chance to have his work be tangibly used, he came to the team to become immersed in the electric vehicle, and specifically ebike, environment.