This is a optional Kyosho Main Gear Shaft, and is intended for use with the Kyosho Ultima Offset Motor Spacer for the RB5, RT5 and SC. This gear shaft works with the motor spacer to center the weight of a brushless motor in the chassis for improved left to right balance. NOTE:
This part must be used with KYOUM523.
This product was added to our catalog on March 25, 2010