Anyone help me and go and measure the size of the pipe off the front of the airbox of the engine cover where the air ducting attaches as this pic

It's the bit next to the battery where the ducting comes from the slam panel cheers

I imagine its anywhere from 2.5inch to 3inch but would be great if someone could tell me for definite cheers

I'm fairly certain I used 70mm ID silicone hose on mine.

I'm fairly certain I used 70mm ID silicone hose on mine.

2 3/4 inch then thanks for that, I'm gonna order some 90degree hose so I can get my forge carbon filter to fit hopefully if its not too big