Shimano Saint BB80D 83mm Hollowtech II English Bottom Bracket CheckoutSpec= 55 x 210mm and the Integrated Power Chassis

and the Integrated Power Chassis adds torsional bite so edges set cleanly and you have stability at speed

Ribbed sidewalls are specially designed for use with classic sidewall driven dynamos

Precision-machined 6061 aluminum

Bracket Seatpost/Handlebar Light Type LED Battery Type Li-Ion Output 80 LUX /

flared cuff

Shimano Saint BB80D 83mm Hollowtech II English Bottom Bracket CheckoutSpec= 55 x 210mm and the Integrated Power ChassisShimano Saint BB71 BB80B BB80D Hollowtech II Bottom BracketsIncludes 3 x 2. 5mm spacers Bottom Bracket Shell I. D. 1. 37 BB Frame Interface English BB Shell Width (mm) 83 Spindle Interface Type Shimano Hollowtech II Defined Color Gold Width 83Mm