Don't give Yamaha too much credit. It was Husqvarna (Jacky Martins) who first won a GP on the revived 4$. However, credit where credit is due, Yamaha came out with a full on Factory Works bike, full of bits of Titanium, unobtanium, and other banned substances for Doug Henry to make a good showing of them. It should also be pointed out that though Husaberg was the first (modern) all four-stroke company, they are now the first (modern) all 2-stroke company.