ISIS bottom bracket with forged and CNC machined aluminium cups and reinforcing sleeve. The CNC machined, heat treated, hollow M15 spindle is made of CroMo-steel. Shot peened finish for fatigue strength and single row, full-ball, sealed cartridge bearings.
A low friction labyrinth spindle seal keeps out contaminants and increases bearing life. With a newly improved extreme conditions bearing grease and 64 ball bearings in each bottom bracket.
The fixed cup spacer (2.5mm) allows the bottom bracket to be used with either 68 or 73mm shells. Furthermore it is featured with a fixed cup on the driveside for a non-side loading design.
Symbolic picture: The picture shows the Evolve ISIS SRX bottom bracket with a axle length of 108mm. The delivered bottom bracket has an axle length of 113mm.
Case width: 68mm ||| 73mm
Material: aluminium, axle: CrMo
Weight supplement: for 68 mm case widths, manufacturer information