1985 YAMAHA YZ490 RED & WHITE EDITION 2 STROKE RIPPA! - YouTube
1982 Yamaha YZ 490 Cross - Ruote da Sogno
Yamaha IT490 Rare Enduro Dinosaur - Yamaha IT
Dirt Wheels Magazine - YAMAHA TRI-Z 490 In honor of 3-wheeler Thursday Robert Boyter stuffed a big YZ490 engine into his Tri-Z 250 frame. Be ready to hang on when you hit