The Hope PF46 Bottom Bracket is incredibly reliable, smooth and available with two different bearing options. This Hope Bottom Bracket is crafted from incredibly durable materials for an uncompromised long-term performance. The bearings are made by INA and have been designed to run directly on the chainset axle, without the use of shims or spacers - again increasing life and reliability, the machined aluminium centre tube is sealed internally with o-rings. A free running labyrinth seal to protect the bearing externally. These custom, Swiss made bearings are double sealed which gives much greater life span than stock units. They are also replaceable. Ride with confidence with the Hope PF46 Bottom Bracket! Hope PF46 Bottom Bracket Features Options to suit 68mm, 73mm, 83mm and 100mm bottom bracket shell widths Available to fit 24mm and 30mm crank axles Available with replaceable stainless bearings greater durability Truvativ conversion kit available separately Cups pressed in and held in place by a screw-in centre tube to prevent slipping and play Easy to service and replaceable parts Weight from: 112g