WITH THE 54MM 114CC CYLINDER KIT THE TRX90 CASES WILL NEED SOME ALUMINUM REMOVED (SEE KIT INSTRUCTIONS BELOW FOR DETAILS AS TO WHERE IT SHOULD BE REMOVED)
I USED A DREMMEL TO DO MINE AND IT WORK JUST FINE
THESE ARE THE AREA'S TO BE TRIMMED FOR THE 54MM CYLINDER
MUST REMOVE SOME ALUMINUM HERE FOR 54MM CYLINDER
MAKE SURE TO SLIDE CYL. DOWN STUDS TO CHECK FOR CLEARANCE
SLIDE BARE CYLINDER DOWN STUDS AND MAKE SURE ALL IS FLUSH