Traxxas 3996X 20-T Idler Gear Idler Gear Shaft

From the Manufacturer This is the 3996X Idler Gear 20T/Idler Gear Shaft E-Maxx from Traxxas. Traxxas has grown to become the number-1 selling name in RTR nitro and electric models for the last 4 years running. No one has done more than Traxxas to advance the RTR category with innovative thinking and fun designs that make it easy for anyone to get started in the great R/C hobby. Traxxas, truly the fastest name in Radio Control.