I could sell you my m4 wheelset (black rims) with original stickers,dt spokes built onto campag centaur hubs comes with original campag scewers and regina extra 7 speed block date from around 89 i believe,not cassette hub,minimal wear you won't find a used set in such fine condition I don't think the bike has been used for off road,new chain work of course work fine on these,can forward pics these are very good rims as you probably know not quite as strong as the M5's I think they were there heaviest rim from that era £110 plus post.