Sprint Boost 90T Freehub | Shimano/SRAM HG Splined 287.5mm Reducing flex in the hub

Reducing flex in the hub also helps to increase bearing life and resist the additional torque of an EMTB motor system

And they look great doing it

The CeramicSpeed Coated Bearings are a further 75% tougher than their standard hardened steel races and boast an average lifetime 7

we are looking at 15mm as an option in the future

Follow tyre manufacturer recommendations as written on the sidewall of the tyre

Sprint Boost 90T Freehub | Shimano/SRAM HG Splined 287.5mm Reducing flex in the hubReplacement freehub for Sprint Boost 90T hubs. For an expanded view of the freehub, which shows it's individual parts, please see the image gallery. Note: Not all parts of the freehub seen in the expanded view are available to purchase separately. Freehub bearings from left (hub side) to right (end cap side): 6902 2RS Bearing Stainless Steel 6902 2RS Bearing Stainless Steel