Buy your own rear diffuser?

[Jimmydean]

Has anyone tried this? I love the look of the rear diffuser but don't want to pay $1,800 for it. Anyone know if you can buy it and what price they are?

Is there a way to buy it and install it yourself on a bare bones 128i?

I've never dont modifications to a car before so I would kind of be afraid to break the damn thing.

[KeithLM]

That's a performance accessory, it is available separately. I'm not sure if that's available as an option now, it wasn't in the past, rather it's an add-on that is purchased after the car.

You can purchase that from some dealers and vendors that advertise on this forum, look in the commercial section, for less than $1800. But it's still quite expensive, $1400 I think. Installation of that part doesn't look to difficult.

[lib]

For a 128i you'll need two pieces.

The first is the "performance rear aero". It'll run about ~1000 installed at your dealer or around ~600-800 to install it yourself. It is essentially a 135i rear bumper and the stock 135i diffuser.

The second is the CF performance diffuser. The cheapest I've seen this is around ~1400 for just the parts. It's fairly simple to swap the stock diffuser for this CF diffuser once you have the performance/135i bumper.

In the commercial section a vendor is in the process of making a non-CF replica of this that will be MUCH less expensive. It will probably be at least a few weeks until they have it ready to go.

[NinTenTom]

does the 128i m-sport package come with the 135i stock aero parts installed compared with the regular sport package?

[hbdunn2003]

Originally Posted by NinTenTom

does the 128i m-sport package come with the 135i stock aero parts installed compared with the regular sport package?

All 135's come with M Aero kit,

M-Sport package required for 128 to get the same kit, except you get fog lights in the front.