This is a pack of two replacement ProTek R/C "SureStart" Aluminum Gear Bushings, and are intended for use with the ProTek R/C "SureStart" 1/8 off road starter box (PTK-4500). These are installed over the 750 Motor output shafts, and support the pinion gears.
Compatibility:
- PROTEK R/C PTK-4500