Team Associated RC10B74.2 Factory Team Carbon Front Gearboxes. These are optional front gearboxes intended to fit the RC10B74.2 and RC10B74.2D. Included is one standard height gearbox and one +2mm gearbox giving you the ability to tune your RC10B74.2 to changing track conditions. Package includes one standard height front gearbox with cover, one +2mm front gearbox with cover and one sway bar bracket.