Shimano Bottom Bracket Dura Ace SM-BB92-41 Press Fit Valve Extension thanks to its exclusive IAV

thanks to its exclusive IAV Power system and an integrated gyroscope

Flat stitched seams to keep chafing away

The ergonomic shape of the handlebar is designed to provide comfortable hand positions for long rides while maintaining confident control during fast descents and aggressive riding

smoothest shifts by HYPERGLIDE+BEAM SPIDERLighter and stiffer constructionReduces cassette inertia resulting in faster acceleration and increased chain securityMICRO SPLINE10T lowest sprocket realized by new FREEHUB body construction

Shimano outer casing cap with long tongue and inside diamter of 4 mm for polymer coated road shift cables

Shimano Bottom Bracket Dura Ace SM-BB92-41 Press Fit Valve Extension thanks to its exclusive IAVDURA ACE Bottom Bracket Press Fit HOLLOWTECH II 86. 5 mm shell width With an advanced seal construction for smoother rotation, the DURA ACE is still lightweight at 54 grams. FEATURES Bottom bracket with small ball bearings for lightweight Advanced seal construction for smoother rotation PRODUCT SPECIFICATIONS MODEL NO SM BB92 41B SERIES DURA ACE R9100 Series Average weight 54 HOLLOWTECH II bottom bracket Press Fit type Press Fit bottom bracket shell