Originally posted by Apex
does anyone know the part numbers for the yokomo differential parts that will fit the 415?
What you need is:
1 x ZS-501 DIFF HALVES - you will get two sets one for the front and one for the rear. you will use the REAR parts, these will have the equal spacing for the outer bearings. It's obvious, as the other set is offset (like it is on the rear diff of the TRF 415).
ZS-506 DIFF RINGS - you will get two (i believe you can use the Tamiya ones too, but I thought it best to use the Yokomo ones just incase).
ZS-507 THRUST BALLS AND WASHERS - these are a real pain! You use both washers and about 6 of the small bearings (you can use ZC-507T if you want Tungsten Carbride Balls, but I couldn't find them anywhere.
ZS-508 DIFF SCREW AND LOCK NUT. - you will get 2 of everything but you only need to use one.
1 x 51055 TRF415 Ball Diff Pulley - the one that's on the rear of the car as standard
1 x 53124 3mm TUNGSTEN-CARBIDE DIFF BALL SET - you could use any 3mm balls, but I think these ones are extremely smooth, they are quite pricey tho
1 x 51092-Tamiya TB Evolution IV,TRF415 46mm Swing Shaft - you could use the aluminium ones too, but I used these just to be on the safe side.
Ball Diff grease of some sort, I am using Team Associated Stealth Lube as it was recommended to me by Apex Models (It's much cheaper than the Tamiya stuff too).
2 x 850 Size Ballrace Bearings
Hope this helps