THIS WILL BOLT UP TO ANY HONDA 50 OR 70 HEAD. IT KEEPS THE STOCK 50 AND 70 MANIFOLD BOLT PATTERN/SPACING. TRX90'S,, THIS WORKS JUST THE SAME AS LISTED ABOVE MODELS 12_POSITION 10MM_HIGH MANIFOLD_TO HEAD ADAPTOR_KIT 25mm_ID (95K) 95K 300047$19.95 CLICK ON PIC TO SEE FULL PAGE CLICK ON PIC TO SEE FULL PAGE