METREA is the new face of urban sport for the urban minimalist. It occupies that gap between rapid road riding & city comfort components for the consumer who seeks pleasure, passion & efficient transport in equal measure A sleek & anti-corroding two-piece crankset provides reliable drivetrain performance & its tooth profile allows for smooth & consistent pedalling For simplicity & all-out speed, a single chainring 42T set up provides optimal urban gearing The Hollow Tech II Chainset features hollow forged crank arms which are both lightweight & rigid whilst being incredibly strong & durable Hollow Tech II integrated bottom bracket design uses a wide bearing placement with a large axle diameter for increased stiffness, efficiency & added durability 70 degree spider arm for optimal rigidity 11-speed DYNA-SYS11 chainring We recommend that the bottom bracket is initially installed by a bike shop to ensure perfect facing & fit For use with 11-speed HG-X chains only An integrated chain guard provides protection for loose fitting casual riding trousers