hi,i was wondering what is the size of these front n rear bearing of this engine and planning to use ceramic bearing for this engine,wana help me to figure it up?thanks

It should be these:

Front:
http://tkocompetitiondev.com/product...roducts_id=156

Rear:
http://tkocompetitiondev.com/product...roducts_id=157

thanks for helping out i will try to order it,btw which piston liner can be use for the sx21 novamega 5port ms?i try to order it from serpent but no reply maybe they dont have it already,any idea?

Most any of the older nova (and even some new ones) will work. R1WC, RB C4 and C5, Max 721 and many others.

Check out this thread, everything applies.

http://www.rctech.net/forum/exclusiv...21-7p-ev5.html