外板材料：鈦合金
Shimano. Sram. Campy 系列使用~~
型號：
CT-SRE (for Sram eTap)
CT-SR (for Sram red/force/rival)
CT-SH9 (for Shimano 9250/9100/8150/8000)
CT-SH7 (for Shimano 7100)
CT-AXS (for Rival eTap AXS、Force eTap AXS、RED eTap AXS)
CT-F1 (for Sram force1)
CT-FRP. (for Sram XPLR)
CT-RX10 (for Shimano GRX810)
CT-RX12 (for Shimano GRX812)
CT-XT81 (for Shimano XT/XTR 1x12)
CT-CPY (for Campagnolo 11s)
#可改裝型號
- Sram：red, force, rival. etap. AXS
- Shimano：Dura-Ace, Ultegra, 105, Tiagra
- Campagnolo：super record, record, chorus.
#齒數選擇
