Hi All,

Just received two sets of rear bearings for my 400 from GTCP. Just for the record, the original RIV bearings (no longer in production) do have some crossovers to other (still in business) manufacturers.

The large bearing (RIV 6208) crosses to an SKF 6208-2RS1/C3HTS1. The SKF is a completely sealed ball bearing and I think, better than the original which was simply shielded on both sides. The smaller diameter roller bearing (inner race: RIV 4DAAP, outer race with roller bearings: RIV 4DAAV) is replaced by a Slovakia-made RPN NU2207ETNG (outer) and an RPN NU2207ETNG (center race). Don't ask why the two pieces share the same numbers on the RPN bearing and not on the RIV.

Anyhow, for those of you with the early cars, this is something you might want to jot down for future reference. One other item of interest, somewhere in the production run, Lamborghini changed to a wider version of the 6208. Bill Young tells me this item is made of "unobtanium" and is very pricey (about $180.00 per bearing). Here are dimensions for future reference of the early (thinner) bearings:

The larger of the two bearings (the ball bearing) is .710 inches wide, 1.575 inches ID, and 3.160 inches OD.

The smaller of the two bearings (the roller bearing) is .904 inches wide, 1.380 inches ID, and 2.835 inches OD.

I made the measurements with a stainless dial caliper so I believe the numbers are pretty close.


Best Regards,

Jack