HP73522 - Differential Screw & Heavy Duty Nut 2mm Set
Yep it fits the normal Pro 4. On first impression the diff nut seems much better, it's all in one with the plastic holder so it's not as awkward to build the diff and when you screw it in it seems much tighter. One thing I have noticed though is that the screw looks exactly the same.
Does anyone know the part# to the new diff screw and nut found in the Hara Kit. I want to replace the ones in my car. The part# that SKILL gave me does not work............. Sorry Dude
It was the right number it just had the "HP" in front of it to show that it's a HPI part. I took it straight from my Mirage Racing newsletter (the distributor of HPI in the UK) and they use the prefixes for different companies so none of the part numbers clash.