This is the Hot Racing Aluminum Slash 4x4 HD LCG Bearing Motor Mount. 

Features:

• Rigid for high horsepower applications
• One-piece light weight CNC machined heavy duty aluminum, anodized blue
• Over-sized 10x19x5mm bearing for a much stronger than stock support (stock is 10x15x4mm)
• Direct fit hop-up requires no modification for use

Includes:

• (1) Aluminum motor mount
• (1) 10x19x5mm ball bearing

Specifications:
Approx. length: 90mm
Approx. width: 28mm
Approx. height: 44mm

Comments:

• Replaces Traxxas factory plastic motor mount TRA7460
• Works only with the Rally and Slash 4X4 using the TRA7460 motor mount and the Low-CG (LCG) chassis
• Will NOT work with vehicles that use the TRA7460A motor mount. E. g. will NOT work with the Rustler 4X4
• For Rustler 4x4 use HRARUF3801