 Only 100 machines were made available.The F4 1000 Senna was a special edition of the "F4 1000 R" released in 2006.The model used the same 174 bhp as the 1000 R. Visually it was similar to the 2002 "F4 750 Senna" and again proceeds from its sales went to Senna's foundation "Instituto Ayrton Senna".