Yes it is I checked before I put it on and here's me review of the head pipe
Low end torque staid close to the same moderate gain in hp
Midrange torque incresed dramaticly and dermatic increase in hp
Highend torque is the same hp incresed more the the midrange
Throttle responce increased but is now running a tad lean
Performance on the motor combined with the pipe and carb setup over powers 20 inch itp holshots with 14/40 gearing in every gear and on every terain except pavement and in the low, mid, and high ranges and continualy looses traction even when hanging off the grab bar
I recomend this head pipe to anyone wanting more power on a already built machine with more then moderate mods or to some one who has broken or busted their head pipe