You wonder why they only increased the displacement from 790 to 865? Does Triumph feel they are sacrificing reliability with a larger displacement. Seems the bikes run fine in the larger engine sizes.
From what I can see, the engine is severely undersquare. They could easily increase the crank throws 6 mm (similar to the 988 kit)with no case modes to help. A Triumph endorsed displacment kit also makes sense from a dealer installation point of view. They would get the profit with the sale and install. Triumph could provide a crank, larger displacment cylinders/pistons, etc etc. This could be used by both 360 and 270 engines.
It seems all the design work has already been done. What are they waiting for????
