BB90 - wide & stiff, just like the rest of the bike

The integrated bottom bracket has two main advantages. 1) It is a stiffer, more efficient structure that transmits more power from each pedal stroke 2) It allows for bigger tube junctions coming into it. This creates a wider chainstay bracing angle and correspondingly stiffer rear end

Consistent fit across all sizes Too often, the ideal fit is established for a 56cm frame size, and then the further you get from the mid-size, the greater the compromise. To achieve consistent fit and handling characteristics, Fisher took control of the following: Fork rake & trail There are three unique fork offsets to maintain consistent trail figures without adjusting head angles and compromising handling. Stack There is a consistent 20mm increase in stack measurement with each size. This ensures the relative hand position on a 45 is the same as on a 61. Reach There is 6mm of reach increase by size. This ensures a consistent fit progression. There is no overlap between sizes and no guessing on sizes.