Yeah Racing Aluminium Case IP67 High Quality Waterproof Micro Servo For Traxxas TRX-4 TRX-6 - YE-0039 313402 Speaking of which

Speaking of which

Drop-in brushless upgrade for Losi Mini-B

plus tube-style bumpers and rollbars for an impressive level of realism

Depth : 29

Type 2 chassis and A parts are molded in Black ABS

Yeah Racing Aluminium Case IP67 High Quality Waterproof Micro Servo For Traxxas TRX-4 TRX-6 - YE-0039 313402 Speaking of whichAluminum waterproof micro servo for use with Traxxas's TRX 4 or TRX 6 as the diff locking or gear change servo. Full aluminum case aids with heat dissapation. Features: For : Traxxas TRX 4 TRX 6 Color: Black High precision IP67 Waterproof Specifications: Material : Aluminum Gear : Steel Max Angle: 180 Voltage: 5. 0V~7. 4V Torque: 5. 0V 2. 5kg ,6. 0V 3. 2kg , 7. 4V 4kg Speed: 5. 0V 0. 12S ,6. 0V 0. 11S, 7. 4V 0. 10S Connector Wire Length: JR 260mm