The chain on my RS is about knackered @29800km so I thought I would do the sprockets as well, although they look OK In the service manual it lists 18/43 but as I was looking at mine (genuine as fitted from factory) they are 17/44 Bit confused here, were there different sprockets on 2019 1050's? Would the final drive ratio be noticeable between these two? 2.588 for mine VS 2.389 for 18/43 Any thoughts?
17/44 seems to be correct. That is what is in the original Triumph Service Manual and listed in World of Triumph parts.