ITEM NAME:390 Motor W/ Metal Gear Heatsink for MN86 MN86K RC Crawler Car Upgrade Parts Description: MN86 MN86KS Full-scale 1:12 4WD Crawler Car Parts - 390 Motor with Metal Gear + Heat Sink Simple construction, nice operation. High quality material, practical and durable. Low heat production, long lifetime, excellent heat dissipation Suitable for MN86 MN86K MN86KS RC car accessory Specification: Material: Metal Motor overall length: 7.5cm/2.95inch, diameter 2.8cm/1.1 inch Motor core length: 1.2cm/0.47 inch Motor gear length: 10mm, diameter 9mm Package Includes: 1 Piece 390 Motor 1 Piece Gear 1 Piece Heat Sink Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement..Suitable for MN86 MN86K MN86KS RC car accessory. 1 Piece 390 Motor. 1 Piece Gear. Simple construction, nice operation. High quality material, practical and durable.