Kimpex, Boxer, SPI piston good or garabage?

[RelicRuss]

Hey guys,
just curious if any of you tried either kimpex, boxer or spi pistons. How did they turn out? good, or are they a waste of aluminum? Which is the better of the 3, SPI??
thanks,
Russ

 

[n2oiroc]

oem is the best and spi is second best. i wouldnt run anything else though.

 

[daman]

OEM Russ..

a little more $$ but worth it.