Trek Bike Madone 2008 Bottom Bracket Bearing KIT Inner Diameter - 9mm the S6808-2RS inner diameter is

the S6808-2RS inner diameter is 40mm

R4ZZ Size: 1/4" x 5/8" x 0

- Built with stainless bearing balls and carbon steel housing for durability

Basic load ratings Cr: 37

ZUCPAS207-20-PBT Thermoplastic Tapped Base Pillow Block

Trek Bike Madone 2008 Bottom Bracket Bearing KIT Inner Diameter - 9mm the S6808-2RS inner diameter isBall Bearings for Trek Bike Madone 2008 Bottom Bracket Closures: Rubber Sealed Closure Side: Double Sided Seals Lubrication: Low Friction Grease Material: Corrosion Resistant Chrome Steel Balls: High Chromium Steel 52100 SAE Steel Balls Cage: Low Friction Steel Precision: ABEC 1 Quality Brand: VXB Quantity: Set of two Bearings