Main Bearing - SOHC Drive Side Ball Bearing (RHP - C3)

Single row ball bearing - Fitted to the outer of the two driveside mainshaft bearings in the crankcase on all SOHC engines, both International and early Manx.  This is the correct C3 (loose tolerence) type, from top quality manufacturer RHP - one of the original suppliers to Nortons in period (the H in RHP representing their old name Hoffman).

Feb 2024:  Sorry to say, that just like all other SOHC RHP C3 (loose tolerance) bearings, these are now obsolete and we are no longer able to obtain genuine RHP C3 (looser fit) versions of this bearing.

We can offer two alternatives now - 0018B which is still the genuine RHP version of this bearing - but in a STD type fit.  These are still of the highest quality, but need to be more carefully ran-in, and of course - if you already have a supspect bearing housing in your crankcase - care needs to be taken to ensure these dont spin.

However, we can now also offer another alternative - Item 0018C, which is from a slightly lesser brand - NKE, but is in the original looser C3 fit.  See that listing for more detail.

On ocassion - when talking to my bearing people (who hunt out obsolete bearings for me) - we do occasionally find a small stock of these bearings availabe from old stockists - so you can email me if you wish to query .. . but expect price to be very high