The Yeah RacingAluminum Motor Heat Sink is a great option designed for 1/8 motor 40.8mm in diameter. This heat sink comes equipped with mounting locations for two 30x30mm fans (not included). Package includes one motor heat sink assembly.

Features:

• Fits 1/8 motors with 40.8mm diameter and 57.9mm length
• Lightweight aluminum construction
• Dual fan design

Includes:

• (1) Heat Sink
• (4) 3x6mm Round Head Screws
• (4) 3x14mm Round Head Screws
• (4) 3x25mm Round Head Screws
• (4) 10mm Washers