‧G5 grade super high roundness silicon nitride ceramic ball, weight 40% of steel ball.
‧Low torque grease.
‧Non-contact rubber seal to reduce friction.
‧Stainless steel rings to reduce corrosive issues.
‧Front & Rear hubs,
‧Bottom bracket B.B
‧Head sets
‧Pedal pivot axel
‧Chain tensioner pulley
