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I realize that the first generation “Speed” is a Class 3 bike (top end of 28 mph) and the first generation (Non-Speed) Rush/City is a Class 1 bike (top end of 20 mph), but what are the actual hardware differences between the two models? E.g., are the motors different, are the Enviolo CVTs different, are the batteries different?
 

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Here’s a chart from the Brose website they both use motors with a magnesium housing so thats a wash. The class 3 bike motor is the Drive TF version and the class 1 bike has the Drive S version, both produce 90 Nm of torque amazingly the class 1 bike gets the most assistance @410% vs the TF version @400%. So I’m guessing that to get the speed bike to 28 mph would be in the software that runs the motor and possibly the hub.
You can also browse the Brose website to learn more.
Brose E-Bike Motors


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