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BB90 SUPER CERAMIC Ver. 2Ceramic BB set fully compatible with TREK BB90, smooth &long lasting rotation is guaranteed. New structure with gasket rings improves overall performance. Sugino OX series and Shimano hollowtechcranks (DURA ACE, ULTEGRA, 105) work perfectly with the BB on TREK frame. Frame standard : TREK BB90 and TREK BB95 (BB90 standard is used on TREK carbon frames, while BB86 is used on alloy frames.) If you have an issue that BB90 bearings wear out so fast and

The specific strength is more than twice as high as that of heat-treated chromoly steel

46-30 (CP74-12S circular) or 46-30 (CY5-SHC-12S non-circular)

D144 Classic Style Chainring for SG75 Series

make sure that it engages enough threads

Using #804 bolts ensures that overall weight will be kept down

the use of either Shimano GS rear derailleur or CAPACITY BOOSTER is recommended

highly versatile

Service and maintenance of the bearing are not required

: BB-SG75 Series (sold separately)

add another spacer(s) on the right side

Steel hexagon bolts and normal nuts

The aluminum shim tape works with Sugino press fit BB