More information about HPI Pinion Gear Heat Sink HPI86712This is the HPI Pinion Gear Heat Sink for the Baja 5B.
Need extra cooling for your Baja 5B drivetrain? Look no further than this machined aluminum Pinion Gear Heat Sink that helps cool the pinion gear and clutch for longer spur gear life. This is a replacement part for the heat sink included in the optional Heavy Duty Pinion Gears, and it can be added to the stock pinion gear for extra cooling.
One HPI Pinion Gear Heat Sink with Mounting Hardware and Instructions
Installation onto vehicle
Width: .42" (10.7mm)
Diameter: .65" (16.53mm)