Shimano FC-6600 Bottom Bracket Inner Cover & O-Rings Description:
The Shimano FC-6600 Bottom Bracket Inner Cover & O-Rings is a factory replacement part that fits within assorted Shimano BB86/PF41 press fit and BSA threaded bottom brackets. This inner cover supports the bottom bracket cups within the frame, and the included o-rings help prevent moisture and grime from getting into the bottom bracket’s bearings.
Features:
- Lightweight plastic inner cover provides support and protection for assorted Shimano press-fit and BSA threaded bottom bracket cups and bearings
- Each order will include one (1) bottom bracket inner cover and two (2) o-rings, which come pre-installed on the cover
- See compatibility tab for full list of compatible bottom brackets and cranksets
CA Residents Prop 65 Warning
WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details…
This product was added to our catalog on February 26, 2026





