'80-'83 KZ440 Twins with Diaphragm Slides KeiHin 36mm Carbs
This is the KZ440 twin KeiHin 36mm carbs that were used on all US models. All the years listed will interchange physically so it is common to see the wrong set installed. Although I always recommend installing the proper set, as long as you match the parts to the ID on the set you are typically fine.
Below is a set of '80 KZ440A1 KeiHin 1391 carbs. This is the most common version. Both numbers physically fit with no modifications, but they do not have the same internal tuning. I only cover US models here.
'80 KZ440A1 LTD (Chain Drive)---------------1391
'80 KZ440B1-----------------------------------------1241
'80 KZ440D1 LTD (Belt Drive)------------------1391
'81 KZ440A2 LTD (Chain Drive)---------------1391
'81 KZ440B2-----------------------------------------1241
'81 KZ440D2 LTD (Belt Drive)------------------1391
'82 KZ440A3 LTD (Chain Drive)---------------1391
'82 KZ440D4 LTD (Belt Drive)------------------1391
'83 KZ440A4 LTD (Chain Drive)---------------1391
'83 KZ440D5 LTD (Belt Drive)------------------1391
