Hi Andy

Once again many thanks for your help and clarifying OEM versus EBC much appreciated.

In regard to the second part it looks like I am totally up a gumtree or is it up a creek without a Paddle!

I got the details from the CMS Website:
R2J - https://www.cmsnl.com/honda-nsr250r2-1988-j-japan_model49608/partslist/0061.html
R5K - https://www.cmsnl.com/honda-nsr250r5-type-ii-1989-k-japan_model49611/partslist/0061.html
and David Silver confirmed the two different configs as being for the R2J and R5K, but I must admit I was mystified as the Centre and Outer Clutch Housing parts are the same for the R2J and R5K hence I smelt a Rat.

I am very much indebited for sorting that out for me as it was begining to do my head in LOL.

Many thanks Andy.

Phil