The flyway/rotor beta parts number from the page: https://www.beta-uk.com/index.php?route=common/partsfinder
It looks that the models 2016-2019 have one flyway and 2020-2022 have another one.
TRIAL EVO 200 2T MY22 - 007.10.008.37.00
TRIAL EVO 200 2T MY21 - 007.10.008.37.00
TRIAL EVO 200 2T FACTORY MY21 - 007.10.008.37.00 <5 lbs, 4 oz. ?>
TRIAL EVO 200 2T MY20 - 007.10.008.37.00
TRIAL EVO 200 2T MY19 - 007.10.064.37.00
TRIAL EVO 200 2T MY18 - 007.10.064.37.00
TRIAL EVO 200 2T MY17 - 007.10.064.37.00
TRIAL EVO 200 2T MY16 - 007.10.064.37.00
TRIAL EVO 200 2T MY15 - 27.00372.000
TRIAL EVO 200 2T MY14 - 27.00372.000 [VTM-TS'09 (3103237)]
TRIAL EVO 200 2T MY13 - 27.00372.000 [VTM-TS'09 (3103237)]
TRIAL EVO 200 2T MY12 - 27.00372.000 [VTM-TS'09 (3103237)]
TRIAL EVO 200 2T MY11 - 27.00372.000 [VTM-TS'09 (3103237)]
TRIAL EVO 200 2T MY10 - 27.00372.000 [VTM-TS'09 (3103237)]
TRIAL EVO 200 2T MY09 - 27.00372.000 [VTM-TS'09 (3103237)]
TRIAL EVO 300 2T MY22 SS - 007.10.074.00.00
TRIAL EVO 250 2T MY22 GB - 007.10.074.00.00
TRIAL EVO 300 2T MY17 SS - 007.10.074.00.00
TRIAL EVO 300 2T MY22 - 007.10.073.00.00
TRIAL EVO 250 2T MY22 - 007.10.073.00.00
TRIAL EVO 300 2T MY16 - 007.10.043.00.00 <6 lbs, 4 oz ?>
TRIAL EVO 300 2T MY16 GB - 007.10.062.00.00