The Ultimate Pro 5 Rear Ebike Hub Boost 148 Mm 6 Bolt Pro Version [0xX1TyLz]

The eBike specific version of the Pro 5 differs from the standard Pro 5 by having a stainless steel driver with 54 points of engagement. The freehub still has the same 6 pawls as the standard Pro 5 freehub, but they are not offset, so all 6 engage at the same time, rather than 3 at a time. Engagement is still quicker on this hub than the old 4 pawl Pro 4, which had 44 points of engagement.

Hope have updated the seals for even better reliability and less drag than the PRO 4 (though we never thought the PRO 4 suffered noticeably from drag). The hubs are still home serviceable and Hope have committed to spare back up for 10 years after they stop production.

New springs on the pawls are lighter action for less drag and wider for a more solid connection. Axles and hub shells have been re-designed to allow larger bearings - again with the twin goals of increasing reliability and reducing drag.