1987 RG
Rear (RR) coil: 30510-KV3-000
Front (FR) coil: 30520-KV3-000
1988 R2/4J
Rear (RR) coil: 30510-KV3-700
Front (FR) coil: 30520-KV3-700
1989 R5/6K
Front (FR) coil: 30510-KV3-771
Rear (RR) coil: 30520-KV3-771
The MC21 and MC28 manuals both list the coils as folows:
Front (FR) 30510-KV3-xxx
Rear (RR) 30520-KV3-xxx
So it would appear that from 1989 they swapped the part numbers.
The front coil has a longer HT lead, so you may find a rear coil [if that turns out to be the only one available] would need repositioning to reach the front plug. It [effectively] doesn't matter which coil you fit, as bar the HT lead, they are all of similar construction.
Note: People have used an NSR125R coil before [30510-GF9-405]. The body of the coil is different, and needs trimming, but it gets the job done.
_________________
Andy.
NSR-WORLD.COM
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