ok i have a savage x with a picco/werks .27 in it with the hpi ribbed pipe...after about 2 months of playing with it..the diff in the rear finnaly shatterd like i was told it would..now i need yalls help on what aftermarket parts to get..diff cup,gears,diff oil..and do i need to replace the front diff also..cause the front is barley on the ground..please help

Hi m8.
You would be better off getting ally diff cups and cases, as this will reduce any flexing.
Then shim it out to remove any excess play. Check this link http://cgi.ebay.co.uk/ws/eBayISAPI.d...MESE%3AIT&rd=1. They might deliver worldwide if asked.

As for oil, people have their own veiws as to which weight to us, but generally it works like this

Thick oil rear = good acceleration in straight line, but no turn in the corners
Thin oil rear= good turn in, but not as good at putting the power to the ground
Thin oil front = good turn in but will straight line out under power
Thick oil front= less turn in off power but excellent ability to pull you out of a corner under power.

Hope this helps.

diff oil??? whats the diference in useing oil or greese in the diff

as far as diff cups go try fastlanemachine.com or novarcproducts.com

just to make it easier...

I used the Golden Horizons diff cups and HPI gear sets. The gears are just the stockers, you just need twice as many.

I tried the heavy silicon oil and absolutely hated it. Even though I only bash and dont race I still had a heck of a time getting around the BMX track. The front tires just "pushed" though the corners giving the savage a horrible turning radius. I ended up tearing them down and just put 30wt shock oil in the front and it has been great since.

In the rear I left the heavy stuff for now because I am lazy and didnt want to tear it apart yet but I will go with something a little lighter in the back soon.