ok so i think have this straight now, the stock flywheel has a counterweight built in that counters the weight of the engine internals, but the aftermarket flywheels do not have such counterweights on them.

So just want to make sure i get the right thing here, my car is an 88 turbo II so i would need t get the counterweight from an 88 automatic car.

Part number 11-521A-N327 on http://www.mazdatrix.com/b5.htm

 

that is the one Will..doesn't Fidanza sell the counterweight too though?

 

Ill check into that i was looking at the flywheel on Summit. Thanks

 

I just checked their website and couldn't find any info on counterweights for their flywheel. Oh well as long is what I get works.

 

I decided to go with the racingbeat unit. Seems pretty comparable to the fidanza unit plus it came with the counterweight.

 

When I got my 8lb AASCO flywheel for the n/a I had to but the auto counter-weight from the forums.