Gt380 main jet 6mm or 8mm diameter

[Itspieman82]

Hi all

Are the gt380 main jets 6mm or 8mm diameter does anyone know? I'm putting an order in for jets for my kettle and want some for the 380 but carbs are still on and I can't get to the bike right now. Joe

[yeadon_m]

Joe,

On the GT380/GT550, the mains are indeed the 8mm large round type.

Here's the specs for mains and pilots (note, the pilots are a different type from the GT750 one as well, having 8 bleed holes - the GT750 pilots have 6 bleed holes).

Genuine Mikuni:

Main jets N100.604, which are 8mm large round type, specify the size (my GT380B runs 80s on all three carbs).

Pilot jets VM22/210, specify the size (my GT380B has 25s on all three carbs).

Cheers,
Mike

[Itspieman82]

Thanks fella. Much appreciated. Looked everywhere mate.

Joe