Bottom bracket Pressfit ceramic Optie:BB GXP BlackBox Ceramic Bearings PressFit MTB BB92 This preload ring is used

This preload ring is used to adjust bearing preload on M-pulse rear hubs

Not compatible with 6 bolt hubs

all with a price that keeps it under control

full ceramic or stainless steel - Material body: Carbon reinforced plastic or 7075 T6 aluminum - Colours: black

Cutouts on the rear cog further reduce weight and add stiffness

Bottom bracket Pressfit ceramic Optie:BB GXP BlackBox Ceramic Bearings PressFit MTB BB92 This preload ring is usedA variant of the external bottom bracket, PressFit cuts weight and provides easier installation by allowing you to press the bearing cups into the frame instead of threading them. There's no change to the crank spindle length and diameter remain the same. BB frame interface: PF30 to English BSA 68 73mm, PressFit (MTB: 89 91. 5mm), PressFit (Road: 86. 5mm), PressFit (SBC: 84. 5mm) Spindle length: n a Chainline: n a Support E type FD: n a Weight Based