The airbox to carb hoses on a GS1000 have never been a separate part from the whole airbox and the ones on the SN I bought from James were pretty hard. So I thought I would try some hoses from a GS750 ('76 to '79 model). Part number 13728-45010.
The 1000 bellmouths (inside the airbox) are about 5-6mm shorter and are held in the airbox with a steel band. The 750 hoses are slightly offset and have no recess to accomodate that band. However they do it very snugly inside the airbox. The length of hose between the airbox and the carbs is the same.
When pushed on to the back of the carbs the hoses needed to be turned a bit to sit square on because of the offset. Apart from that they fit spot on. The extra length with the bellmouths doesn't appear to make any difference to the running and I don't expect it to but I haven't done a full road test yet (no MOT).
Getting the carbs out with the old hard hoses on was the old tug of war pain in the backside. Popping them back in with the new buttery soft rubbers was a doddle.
The 1000 bellmouths (inside the airbox) are about 5-6mm shorter and are held in the airbox with a steel band. The 750 hoses are slightly offset and have no recess to accomodate that band. However they do it very snugly inside the airbox. The length of hose between the airbox and the carbs is the same.
When pushed on to the back of the carbs the hoses needed to be turned a bit to sit square on because of the offset. Apart from that they fit spot on. The extra length with the bellmouths doesn't appear to make any difference to the running and I don't expect it to but I haven't done a full road test yet (no MOT).
Getting the carbs out with the old hard hoses on was the old tug of war pain in the backside. Popping them back in with the new buttery soft rubbers was a doddle.