Brand new BLACKBONE hardened steel heavy duty transmission idler gear for HPI BAJA, Rovan Baja, KING Motors etc. All CNC Machined for greater precision and accuracy preventing any loose play like stock diff gears which can result in failures.

These are an absolute must when an increase of power is added to your car. This will outlast standard diff gears 20 fold saving both time and money.  30T Idler gear in Premium British Steel.

The only tranmission gear we can recommend to handle the power of a 40cc+ engine!!!