来自MSN5 个月
These Dirt Bikes Are Some Of The Rarest In Existence
the company looked for opportunities to expand its horizons and saw opportunity after the introduction of Yamaha's first 400cc 4-stroke bike, a groundbreaking model for dirt bikes in 1997.
Could This Yamaha XE4 Electric Dirt Bike Take Over The Motocross World?
How was a 400cc class machine allowed to compete with 250cc class dirt bikes? The American Motorcycle Association (AMA) -- ...