1990 vs 2020
UK MTB Manufacturing Evolution.
1990 saw hydraulic (rim) brakes and a dishless rear wheel on a CNC'd, square tubed RC100 . The later also featured in the design of the 2020 HOPE HB130 with it's proprietary rear hub standard.
This will not be continued onto the 2021 revisions, with the change back to Boost on the rear, facilitating easier wheel replacement ,in the event of catastrophe.