Tamiya 54393 Type 380 Sport-Tuned Motor

Tamiya 54393 Type 380 Sport-Tuned Motor

What is this item and what kit is it used with? Where is the part located on the kit?

FEATURES: This is a new Type 380 Sport-Tuned Motor for RM-01 and TA05 M-Four
chassis. When used with the model's standard gear ratio, it offers a
higher top speed and improved acceleration than Type 380-S motor
(Item 51487).

The pre-wired cables have 4mm diameter standard connectors.

SPECS: Diameter: 28mm (1-1/16")
Length: 38mm (1-1/2")
Shaft diameter: 2.3mm (3/32")
Shaft length: 13mm (1/2")
Turns: 29
Top speed: 27km/h (measured on TA05 M-FOUR chassis)
Lead length: 85mm (3-3/8")
Pinion adapter, length: 12.4mm (1/2")
diameter: 3.2mm (1/8")