From HPI Racing:
Totally beef up your Savage drivetrain with this Heavy Duty Aluminium Clutch Shoe set! With three tough clutch shoes and durable machined aluminium construction, you can get longer life when using really powerful engines! Fits standard Savage monster trucks, adding durability to the drivetrain.
Genuine HPI quality spare part for the Savage, for easy maintenance and repairs. See below for kit reference.