Note: Neo freehubs that are no longer in stock are discontinued. They have been replaced with the newer E-Sync versions, listed here.
E-Sync drivers include pawls, springs, pawl retainer, 0.5mm freehub spacer, 1.8mm cassette spacer, and freehub seal. The Micro Spline kit also includes the drive side endcap.
Also compatible with Neo and Neo Ultimate hubs as a more durable upgrade. Make sure to swap out the red alloy spacer with the 0.5mm spacer included in each kit.
