what way to go revtech or cam in evo mukini carby and after market pistons and flow the heads ???

revtech are asian crap lucky too get a good 1 . 

The early 100ci Revtech had troubles
If you go one the later model after 06 i think
Its a 4'x4'- I've read alot of reviews and they get better feed back than the untima
I own one but it's never been started

Wouldn't go much over 100 in these for everyday riding but

 i/am ATM helping rebuilding a early 100 c.i. rev crap motor for a fellow  what a mess the crank pin failed & went thru every part, poor  bloke he  has 2 of them ,   the later 1 still goe's but for how long , maybe the asian/s should have called them howlong ?