ShimanoShimano Bike Bottom Bracket Parts

Shimano External Bearing Bottom Bracket Parts image Shimano External Bearing Bottom Bracket Parts

- Parts for Hollowtech-II external bearing bottom brackets
- BB shield and o-ring seals include: 1 shield and 2 sealing o-rings
- SH-15500: external seal between crank arm and bearing cup

Shimano Fixed Cup Spacer image Shimano Fixed Cup Spacer

- Allows for adjustment of chainline by shimming cup away from frame

Shimano Internal Bearing Bottom Bracket Parts image Shimano Internal Bearing Bottom Bracket Parts

- Service/replacement parts for Shimano bottom brackets
- English threads: 1.37" x 24tpi
- Italian threads: M36 x 24tpi
- Non-drive BB cup that fit UN52/53/73 BB also fit LP26/27, CS15, and CT91

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