Hatta is one of the most respected parts manufacturers in Japan.
Their bike parts lineup focuses purely on headset and bottom bracket parts for
The R9400 is Hatta's square taper NJS Keirin approved offering,
and is suitable to use with NJS cranks such as the Sugino 75, Grand Mighty,
Suntour
Superbe Pro and Shimano Dura Ace square taper models.
-The bearing races are mirror polished as standard!
-Crank bolts are included.
-109mm, English thread.
-NJS approved.
-The HATTA R9400 is used by 65% of Keirin pro riders, and the Hatta Swan NJS
headset is used by 95% of Keirin pro riders.
