yamaha dt

yamaha dt

port it at the same time too i know a lad who built a 20 bhp dt

 

yamaha dt

lol im just want people that know it more the people on the forums have conflicting advice, im gonna take it to the yamaha shop and get it done, but it has the standard exhaust on it

 

yamaha dt

You wont know exactly what has been done to it without going through ALL of the options of de-restricting it.
Why the f'k you would want to restrict it,only you know.
When I was too young to ride bigger bikes, my bikes were never standard....I don't think I'd want busses and trucks overtaking me with a large speed difference.