M21BT-R 自由轮体套件 (1H1DQ0105+1H1YF0103+4H1KT0402)。
兼容性：
- 2019年壮胆E+1
- 2019年壮胆E+2
- 2019 加强版 E+2 动力
- 2019 Fathom 29er 2
- 2019 Fathom 3
- 2019 Fathom E+2
- 2019 Fathom E+2 29er
- 2019 Fathom E+3
- 2019 Fathom E+3 29er
- 2019 Fathom E+3 Power
- 2019 Fathom E+3 动力 29er
- 2019 立场 E+0
- 2019 立场 E+1
- 2019 立场 E+2
- 2019 斯坦斯 E+2 动力
- 2020 壮胆 1
- 2020 壮胆 2
- 2020 壮胆 E+ 1
- 2020 壮胆 E+ 2
- 2020 Fathom 2
- 2020 Fathom 29 1
- 2020 Fathom 29 2
- 2020 Fathom E+ 2
- 2020 Fathom E+ 2 29er
- 2020 Fathom E+ 3
- 2020 Fathom E+ 3 29er
- 2020 立场 1
- 2020 立场 2
- 2020 立场 29 1
- 2020 立场 29 2
- 2020 款 E+ 1
- 2020 Stance E+ 2
- 2020 瓦尔-E+ 3
- 2021 壮胆 1
- 2021 壮胆 E+ 1
- 2021 壮胆 E+ 2
- 2021 Embolden E+ EX
- 2021 Fathom E+ 1 29er
- 2021 Fathom E+ 2 29er
- 2021 Fathom E+ 3 29er
- 2021 Fathom E+ EX 29er
- 2021 立场 29 1
- 2021 Stance E+ 1 29er 625
- 2021 Stance E+ 2 29er
- 2021 Stance E+ EX 29er
- 2021 瓦尔-E+
- 2021 Vall-E+ EX
- 2022 壮胆 E+ 2
- 2022 Embolden E+ 2 GG
- 2022 款 Embolden E+ EX
- 2022 Fathom E+ 2 29er
- 2022 Fathom E+ 3 29er
- 2022 Fathom E+ EX 29er
- 2022 年立场
- 2022 立场 29 1
- 2022 立场 29 2
- 2022 Stance E+ 2 29er
- 2022 Stance E+ 2 29er 625
- 2022 Stance E+ 2 29er GG
- 2022 Talon E+ 29er Sport
- 2022 Talon E+ 运动版
- 2022 瓦尔-E+ 2
- 2022 Vall-E+ EX
（非详尽列表）
