BOX Three Prime 9 eBike Cassette - 9-Speed 12-50t Black Weight-1960 Adjustable front wheel block for

Adjustable front wheel block for improved fit from 20` to 29` wheels

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Its precise and easy to use design and dipped handle provide ergonomic use

Same link geometry as XX1 Eagle with solid pins and a more modest finish treatment

Extended lower arm included for big screen smart phones (iPhone6+)

BOX Three Prime 9 eBike Cassette - 9-Speed 12-50t Black Weight-1960 Adjustable front wheel block forBOX Three Prime 9 eBike Cassette 9 Speed 12 50t Black. The Box Three Prime 9 cassette is a great all around cassette option. All cogs are stamped from steel and subsequently the larger ones are pinned to alloy spiders. It also features weight reducing holes on the cogs. The Box Three Prime 9 offers ultra wide ratio with consistent progressions Prime 9 technology offers the same range as a 12 speed drivetrain with fewer gears to shift through Fewer