Onyx Vesper Rear Hub - 12 x 157mm 6-Bolt Black 32H Micro Spline MFPN=42410088 Fits all standard mount hangers

Fits all standard mount hangers

Misc #232 Trek

Quarq power meter compatible with size 34t

5mm overall length) for pedal's fore and aft edges

Onyx Vesper Rear Hub - 12 x 157mm 6-Bolt Black 32H Micro Spline MFPN=42410088 Fits all standard mount hangersOnyx Vesper hubs transfer the precise amount of torque you want to the ground when you need it. Nasty climbs on boulders and rock require just the right amount of instantaneous power but only at your command. There is no substitute for absolute control of your machine. Uphill or downhill Onyx ceramic hybrid bearings get you rolling faster and with less effort. Vesper hubs are the lightest MTB hubs from Onyx intended for cross country and trail use