The Takegawa Desmo 4 Valve Twin Cam bore kit is available in 106cc SCUT displacement with12.9:1 compression ratio. Desmodromic valve actuation removes sloppy valve springs that foloat at high rpm. Kit comes with all aluminum ceramic plated cylinder and 57mm SCUT piston that does not require case boring for installation. Top of the line 106cc bore kit available at Minimob Racing first.