The ultra lightweight R45 hub has been designed expressly for the demands of road racing with two objectives. It must be light and fast.
The R45 front hub is 9 % lighter than the Classic hub. Because Chris King has designed a sleek new hubshell body and a new 17 mm axle. That's 17 mm from dropout to dropout resisting deflection during cornering or when the power is full on.
Furthermore Chris Kings designed and built a bearing specifically for the R45 hub. As with every King bearing, these stainless steel sealed bearings are made in-house in Portland, Oregon and individually hand-checked for precision and smoothness. This proprietary bearing design allows the developers to place more rolling elements per bearing meaning greater durability and precision. R45 bearings also feature lightweight, low-friction seals for fast rolling and can be easily serviced at regular intervals using only a single 2.5 mm hex wrench and penknife.
Clearance: R45 Front can be used with radial lacing.
Weight supplement: manufacturer information