MET Estro MIPS Helmet - Black Matte/Glossy Medium CheckoutSpec= for 15x100mm Forks Defined Color Black Rings 32 LS comp and 3

MET Estro MIPS Helmet Black Matte Glossy Medium CheckoutSpec= for 15x100mm Forks Defined Color Black Rings 32 LS comp and 3 Defined Color Black Rings 32 Spindle Interface Type SRAM DUB Chainring BCD Direct Mount SRAM Color Black Chainline Hub Compatibility 141 148 Boost Hubs Designed for ebike Yes Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Number of Chainrings Chain Retaining Single Crank Intended Use Mountain BB Included No Pedal Spindle 9 16" Crank Length (mm) 175 Fits 12 notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 45 47 mm and a minor diameter (inside of notches) of 44 mm including: SRAM BSA DUB Race Face Cinch Rotor BSA30 Zipp Vuma Hawk Racing BB3086 and more In mold polycarbonate shell with EPS liner CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older Maximum Head Circumference 58 Gender Age Adult Minimum Head Circumference 56 Color Black