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Bosch PowerTube battery for internal frame mount
and activate Smart Walk Assist (which helps you push the bike up steep hills)
developed and tested too many damn times with Tyler McCaul
as well as 4 colours
Trek Knock Block Headset Assembly with Display Chip Color:Black Bosch PowerTube battery for internalTrek proprietary headset components compatible with Trek Knock Block models 58 degree headset fits all 2017 2020 Knock Block equipped models Includes crown race, bearings, top cover, frame chip & fastener Frame chip has display tabs to connect Bosch Kiox Mount sold separately Must be paired with Knock Block stem and Knock Block spacers Knock Block headset spacers not included
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