Originally Posted by
kingtito
Quick question. I just picked up the R4 SP edition and was wondering if the diffs still need the .3 shim on the cup side? I'm building the diffs now and if I tighten the diffs down the diffs lock up. I have to losen the screws a bit for the diffs to feel smooth.
Anyone have information on this?
No additional shimming needed. Just follow the manual. Sp has the steel gears.
How much did you bought it?