Item No NVK-5401 Description For a sleek, low-profile exterior, Novak is introducing the Havoc 1S Low-Profile Heat Sink Replacement (#5401). The new heat sink can be easily installed onto the Havoc Sport 1S Brushless/Brush ESC (#1731), utilizing the same screw pattern as the original heat sink. The custom-crafted heat sink also aids speed control installation for 1S Li-Po applications, where size and weight constraints are common. This versatile heat sink is also compatible with Novak's Havoc 2S Sport Brushless/Brush ESC (in systems #3033-#3036) with a Smart Boost 1-Cell Li-Po Step-Up Module (#5474) to equip the speed control with 1S Li-Po compatibility. Installing the Havoc 1S Low-Profile Heat Sink requires the removal of the ESC's original heat sink and gap pad. Do not use a sharp object to pry off the heat sink. The PCB's MOSFETs may be potentially damaged, which will void the warranty. INCLUDED ITEMS Low-Profile Heat Sink Screws Gap Pad Detailed Instructions