I have a rail and a levo, the bosch motor is dead silent, it's your battery that's rattling around. Alot of us run a battery strap on the rails.I got a Trek Rail with a Bosch motor, and I hate its clunking sound on descends. And I'm told that the guys with Brose motor enjoy the silent flow. But seems like the Brose has the issue on climbs Do the new bikes still have the issue?
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