DR10 owners can now launch their car with confidence (or reckless abandon) knowing that their 3-gear Stealth transmission is up to the task with these new metal gears and hardened steel top shaft from Team Associated. Included in the kit are a new differential housing with hardware and gasket, idler gear and the aforementioned hardened steel top shaft with a metal top drive gear. The hardened steel top shaft and drive gear are also available separately as item #72005.
Link: https://www.associatedelectrics.com/news/latest_products/2562-new_dr10_metal_gear_conversion/