Skusa Rules on airboxes???Home › Forums › General Discussion › Skusa Rules on airboxes???This topic has 1 reply, 2 voices, and was last updated 22 years, 2 months ago by stacey cook.Viewing 1 post (of 1 total)AuthorPosts February 16, 2004 at 5:07 pm #46108 stacey cookParticipantMike, yes you can run the 4-hole airbox at GJMS, only when it is SKUSA sanctioned will we require know more than a 3-hole with 29mm tubes. You can also plug one hole like you mentioned. See you at the races. StaceyAuthorPostsViewing 1 post (of 1 total)You must be logged in to reply to this topic.Log In Username: Password: Keep me signed inLog In