the 400ex is a really good bike for dunes and racing and trails and reliable quad, on the other hand a 450r has alot more power/torque and is good for drags, trails, dunes, and tracks
yes, I use to race a 400ex also and I have a yzf250. they are both great starter bikes.
how to time a 2002 400ex
it depends, what brand is it
bike
400ex does 60 tops.
the stock 400ex has 29.3 at 6900 rpm
definitly
The brand name of the bike serial number decoder tool recommended is Bike Index.
no. the can be any brand
Gary Turner invented the GT brand.
husquvarna