it freakin rips! i love it! the 400ex has the funnest chassis ever,hands down.the power mid to top is great.bottom end sucks but it runs great just off idle so it is still easy to ride in technical stuff.i am ordering some lower gearing for it.its way faster on the top than it needs to be.
for the rear end we flipped the carrier,relocated the brake stay,used a +5 stainless brake line and relocated the chainslide and roller.everything is backwards compared to a 250r.the pipe and kicker is on the left and the drive is on the right.the carb also angles to the right.big thanks to motosurfer for the one off intake manifold.
unfortunatly last time i rode it the the filter wasnt seated in the airbox properly and it ingested dirt:crying:so now its getting a crank rebuild and topend:grumble:i was amazed at how good it still ran with 50psi of compression:shrug: i also learned the expensive way how the rear brake needed to be set up.firt time out destroyed the rotor,rotor hub,caliper and line

uch: