This is a set of 9 planetary gears for the Autohelm MK2 ST4000 motor gearbox. The gearbox contains a total of 9 gears so this complete set will replace all the gears in the gearbox. These are 3D laser printed in durable nylon plastic.
These gears are for the Mark 2 (MK2) GREY wheel Autohelm ST4000 - they DO NOT fit the Black Mark I wheel. Find the MK1 gears here.
Download the installation instructions for the gears here.