Welcome Super73 riders! NEW! Fast Charger for S-2, R, RX by Chi Battery Systems!
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Build or upgrade your electric bike for more speed and bigger grins. 

You feel the need for speed and you are willing to void your warranty and assume risk of death or bodily harm. Okay, Knievel. We heard your cry. Here are the motor and controller kits that you want to build your custom bike or retrofit your Super73 bike to blur the centerline. Please read our "So You Wanna Rod" blogs. And enjoy!