"jojje" in Sweden does this box modifying - except for Americans.
Let me caution people here: these new Triumph twins come with cast pistons and steel con rods! The old 650's had forged pistons and forged aluminum con rods, so they could take the high rpms.
Revving the snot out of a cast piston engine is just asking for trouble, as in "It got blowed up!"
But, if one installs a Wiseco big bore kit, one gets replacement forged pistons, which are certainly strong enough to survive high rpm blasts.
