[d16dcoe45]

IMO the Kyosho "X" rings (as found as options for the rb5, zx5 sp and fs) are teh best O-rings you can use for the Tamiya shocks. I am surprised the team guys use one MIP ring as that is an SAE size (1/16" I think) and possibly would be too loose or add too much stiction.

The x ring is teh same size--3mm x 6mm and seems to give less stiction to the shock action while at the same time sealing much better. The only issue is that here in teh states they are roughly $8 for a package of 8!!

I think the stock red Tamiya silicone o-rings are kind of hard--they are harder than the equivalent style Associated and Losi o-rings. I find they just dont seal very well at all. Maybe they are really old and the silicone has dried out?

I would be curious on trying the stock Yoke BX clear silicone o-rings as they are a metric size and would work. I already use the Yoke shafts (front BC and rear Bx) which are exactly the same lengths as teh WCE shafts but the ti-nitride coating lasts MUCH longer than the 2-3 race days of the original WCE shafts.

Does anyone know the diameter of the steel shims used in the WCE shock cartridges?