Dont be disheartened, once you have your pipes fitted you will notice a nice improvement in the quality of performance, the enjoyment of the ride and they`ll put a smile on your face. The 865 has a flatter torque curve than the 790 and this will show in a stronger "in gear roll on" response in the higher gears, whereas the 790 likes a downshift or 2 and some revs to really rock, the 865 will grunt.
To answer your question, the Speedmaster is in a lower state of tune than the 865 360 twins ie. the Thruxton and T100.
Cheers
Graeme
www.Thunderbike.co.nz
