Got mine in a vito dualiner with opening about 1240mm high. Loads of room with screen and mirrors off.
Hi I move my MTS 1200 regularly in a Mercedes Viano, it just about squeezes in the back door with the screen and mirrors off. But the Viano has a headlining. Remember if taking the mirrors off that its a reverse thread on the offside mirror. If its still tight you can compress the forks using a ratchet strap ( just to get it in the van ) Strapping between brake caliper mount and bottom yoke on 1 side.