HPI bodyshell features:

Kyosho VZW417 Steel Differential Bevel Gear

operation while submerged in liquid)

Losi Racing TLR234131 D Pivot Block Aluminum 22X-4

Six Retaining Nuts

Savox SAVSCSG1211MG Top Case w/ 4 Screws, for SG1211MG Servo Revo Parts HPI bodyshell features:Savox SAVSCSG1211MG Top Case w 4 Screws, for SG1211MG Servo Replace a cracked or worn top case on your Savox SG1211MG servo with this genuine replacement, restoring a protective enclosure for the internal components. Four mounting screws are included, so you have everything needed to reassemble your servo and get it back in service. Replacement top case for the Savox SG1211MG servo Includes 4 mounting screws Protects internal gears and electronics