And we’ll start with what’s arguably its most devastating asset: 426cc of liquid-cooled 5-titanium-valved four-stroke single bearing newly remapped ignition for more precise spark - and performance that’s quicker and harder hitting than ever. Well we’d of course have to say "yes " but you’d expect that from us. So we’ll just let this milestone of MX engineering winner of three straight "Four-Stroke of the Year" awards speak for itself. "Could the YZ426F be perfect " Motocross Action magazine asked in a recent test. Five Titanium Valves. 2002 Yamaha YZ426F This is a 2002 Yamaha YZ426F street legal with a license plate... A must see with lots of parts for baja designs. Motorcycles Off-Road 1579 PSN . One Bad Mother. Just serviced Four Strokes...