iTroll M4 Fit Kit
Fits 9.9, 15 and 20 HP EFI motors sold by:
Mercury & Tohatsu

View installation instructions:

Buy / build a SINGLE MOTOR iTroll system with M4 Fit Kit.

Buy / build a DUAL MOTOR iTroll system with M4 Fit Kit.


You can make a positive ID of the motors that the M4 fit kit supports by looking for the following:



A) Throttle body
B) Fuel rail