Surron Light Bee Parts Diagram

Light Bee MY17-24 vs MY25 Compatibility Overview

Surron Light Bee Model Year Compatibility Overview

1. Electrical System: Controller, Battery, Charger, Harness

The most impactful updates are in the electrical system:

2025 controller (21100-Y029A-0100) is backward compatible but performance is capped at 6 kW on older bikes.
MY17-24 controllers do not work on MY25.

2025 battery (26000-Y029A-0000) uses a new single connector GW design and is not compatible with MY17-24 frames, harnesses, or charging systems.
Older dual port batteries are discontinued. The MY24 single connector battery is still supported but is not compatible with MY25.

MY25 uses a redesigned main harness and power cable set.
MY17-24 harnesses and power cables cannot be used in MY25 and the other way around.

MY25 charger is an updated 12 A model (21700-Y028A-0200) that matches the new battery connector.

Bottom line: The entire electric system (controller, battery, charger, main harness, power cables) must match the model generation.

MY25 motor (11100-YQ2A-0401) is a revised 4 kW unit with 6 kW peak. It is mechanically compatible with older models but will only reach full output when paired with the MY25 controller and battery.
MY17-24 motors can be mounted to MY25 but are not recommended as an upgrade path.

MY25 introduces updated pulleys and belt:

The MY25 primary pulley (13202-YQ2A-0500) and MY25 belt (13111-YQ2A-0500) must be used together.
MY17-24 Continental and Gates belts and pulleys do not interchange with MY25 parts.
Midshaft assemblies are shared but pulley and belt pairing must stay within the same model year group.

MY25 moves to DOT only brake systems:

MY25 front and rear brake systems require DOT oil and are not cross compatible unless the entire brake system is swapped as a complete unit.
Individual MY25 brake components, including calipers, master cylinders, and hoses, should not be installed on MY17-24 bikes by themselves.

MY25 switches to an 18 inch rear wheel layout with matching tire and tube sizes:
- MY17-24: 19 inch rear wheel
- MY25: 18 inch rear wheel
Rear wheels, tubes, and rim bands are generation specific, though most bearings and bushings are shared.

Despite the updates, a large portion of the Light Bee platform is shared:

Frame and subframe, with color differences only
Seat
Swingarm
Linkage system
Rear shock, with the new MY25 shock fitting older models
Front fork assemblies, KKE, Fastace, RST & DNM have their own parts
Handlebars, stem, and clamps
Footpegs and side stand assemblies
Fender sets
Primary and secondary chains and rear sprockets
Lighting system, including headlight, dashboard, horn, switches, and DC converter
Most body plastics. The MY25 number plate can be fitted to older bikes with the correct MY25 hardware.

These shared components make it easier to service and upgrade Light Bee models across different years.