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Race Face Vault Hubs - Micro Spline, Bigger Balls Inside 1

Race Face is offering an ultra-durable package for those wanting to run Shimano 12-speed drivetrains.

Race Face Vault Hubs - Micro Spline, Bigger Balls Inside

Everyone wants more range and compatibility but it sucks when that comes with an unwanted durability compromise. So, after acquiring a licensing agreement from Shimano, we decided to build a 12-speed Micro Spline cassette body with bigger balls.

Many Micro Spline cassette bodies use 6802 bearings, which have a relatively small 2.38mm diameter. Over the past year, extensive testing in our lab and in the field with RF athletes such as the Rocky Mountain/Race Face Enduro team, led us to the conclusion that smaller bearings in the Micro Spline cassette body just weren’t as durable as our current Vault HG and XD cassette bodies.


With some creative thinking and more testing we were able to work around the geometry constraints of Micro Spline and fit the same 6902 and 15267 bearings used in our HG and XD cassette bodies. This increased the bearing ball size from 2.38mm (6802) to a burly 3.97mm (6902) and 3.5mm (15267).


Big balls aren’t always better, except when it comes to bearing size and durability.

The new RF Micro Spline compatible cassette body works with all Vault hubs, including the Easton Cycling Vault hubs.

Vault cassette bodies are now available from your favorite RF dealer or online at for $95 USD. Micro Spline-equipped wheels will be coming later this spring.

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