Heavy Hitter 520 Primary Drive Conversion OEM/EBMX Ultra Motors eMOTO This gravel e-bike features a

This gravel e-bike features a lightweight frame with street tread tires

NOTE: If you want to keep your horn

New mounting bracket with greater vertical adjustability

the Apex delivers an unrivaled riding experience

If you do please order THE 12MM OPTION

Heavy Hitter 520 Primary Drive Conversion OEM/EBMX Ultra Motors eMOTO This gravel e-bike features aThe Heavy Hitter 520 Primary Drive Conversion is the lightest 520 chain drive kit on the market for the Sur Ron Ultra Bee, designed for riders who want maximum performance with minimum rotational mass. As seen on EBMX FIM E Xplorer race team bikes ridden by Jack Field and Jess Gardiner. Fitment: Sur Ron Ultra Bee OEM Motor Sur Ron Ultra Bee EBMX V1 and V2 XUB 80 Motor Download Tech Sheet (Assembly & Torque Specs) NOTE: For EBMX and OEM motors. Some