The Chinook 104 range was changed to cater for far reaching technical gear system developments. The new generation middle rings have two pairs of shortened teeth to assist down-shifting.

• PCD : 58/104mm.
• Compatible 8/9 speed
• middle : 32, 34, 36, 38, 40, 42T
• Colours : Silver or black.
• Material : AL 7075 T6