Nankai came up with a new 9T driver that fits with 1/2" x 3/32" thin chain. Running a thin chain allows you to save some weight (50 to 100gr depending on your setting).
The driver is available for the K-Type freecoaster model now (both alloy and steel shell), it includes a 9t driver and dust cover, a cone for 9t driver and 14 cr-mo balls of 5/32".
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