CYSUM is a manufacturer of electric bicycles, e-cargo bikes, and tricycles designed for off-road trails, city commuting, and recreational riding.
CYSUM specializes in manufacturing high-quality electric bicycles, mountain e-bikes, and electric tricycles. Founded in the early 21st century by a passionate bicycle engineer, the brand has grown from a small workshop to a notable e-bike manufacturer with local warehouses and a dedicated service team. Their diverse lineup includes versatile city commuters like the Cityrun, rugged mountain e-bikes like the Speedy series, and reliable tricycles such as the T1 Pro.
Built for efficiency and durability, CYSUM electric bicycles feature advanced LCD displays, robust 250W to 500W motors, and long-lasting lithium batteries. Whether navigating tight city streets or exploring rugged off-road trails, CYSUM provides riders with an accessible, efficient, and eco-friendly transportation solution.
Selected manuals from manuals+ curated for this brand.
Common questions about manuals, registration, and support for this brand.
You can find user manuals, technical specifications, and assembly instructions for models like the Cityrun, Speedy, and T1 Pro on the Service Pages of the official CYSUM website, or by browsing the documents provided on this page.
CYSUM provides a 1-year limited manufacturer warranty against manufacturing defects for the original owner on all e-bikes purchased directly from their official website.
When parked and the speed is at 0, hold the UP and DOWN buttons for more than 2 seconds to access the settings screen. Use the default password '6688' to enter and modify settings like speed limits, voltage, or backlight.
Error Code 24 indicates an under-voltage protection state, which means your e-bike battery power is extremely low and needs to be recharged immediately.