OEM performance crankshafts
 

ETA: CAMSHAFTS!! Sorry guys, cant edit title for some reason.

These are advertised for E46 330i owners.

Any reason these won't fit/work in an M54 X5?

M54 Performance Engine Kit
BMW E46 330i M54 3.0L*
Complete retrofit kit from BMW
Increase your horsepower, torque, and redline with this all inclusive kit from BMW.
Increases engine performance to 235hp
Boosts torque by 8 ft lb
Raises redline to 6,800 rpm (from 6,500 in the regular 330i)

http://http://www.ecstuning.com/BMW-...afts/ES17871/#

I had this on mine M54 X5 ... BMW E53 Schrick Peformance Camshafts | Turner Motorsport

Cool! Was power increase noticeable? Did you need to flash a tune for these?

When I did my engine mods.. I had a lot of thing conjunction with like Schrick intake manifold,Schrick cams ,Group M intake and Dinan stage 1 engine and trans software ,4.8Is mufflers... Very noticeable and doesn't feel like I had an 3.0i any more...

And here is my sound clip of my little beast,,,,,07152009041 | Flickr - Photo Sharing!

Nice!!!

I'd love to chance on some iS mufflers, kinda hard to find though. Hope some come up after I finally get done catching up on maintenance expenses.