the trunks all weigh the same. The sti wing is maybe a few pounds more than the wrx wing. Doing this mod won't improve anything other than maybe looks and that's still subjective. If you really want to save some weight then get the aluminum spec-c trunk.

 

get a carbon fiber or the spec c aluminum trunk to save weight.
the spec c comes predrilled with wrx mounting holes for a wing.

 

Thanks for both replies. That's actually what I planned on doing, getting a Spec trunk. I'm trying to figure out exactly how much weight I would be saving by swapping to that trunk and a WRX wing vs using a standard USDM STI trunk and wing.

So does anybody know how much the STI trunk and wing weigh? I've been told it weighs 45 lbs between the trunk and wing. Now I just need a stock WRX wing weight so I can add that to a spec c trunk weight (11 lbs I think) to see what kind of grand total of weight I would be saving if I execute this plan.

So does anybody know how much the WRX wing by itself weighs???

 

There is a lightweight parts thread, but you'll have to search a bit for it. Also, AnorexicSTi's journal has a number of weights listed. Can't help you on the weight of a WRX wing, but if you go to subarugenuineparts.com, you could at least find its shipping weight.

 

Stock STI trunk 24 lbs (painted and with locking hardware)
Stock STI wing 17 lbs
Spec C Alum trunk 11 lbs (12 lbs with paint, 12.75 lbs with locking hardware)

 

So the STI trunk lid weighs 24 lbs. The wing weighs 17 lbs. And both together weigh 41 lbs? Thanks!

So the spec c trunk (12 lbs painted) with a WRX wing would weigh in somewhere around 20 some odd pounds? I'm guessing on the WRX wing weight...

Anybody know the official weight of the WRX wing?

 

Anybody know???

 

I don't know what the exact weight of the WRX wing is, but I just removed one the other day and it is LIGHT! I was absolutely SHOCKED at how light it is.