"In this Product Series, I document the unboxing and test fit of the E92 Superlight Carbon Trunk. The E90 LCI variant is also available here. They are ideal lightweight trunk options for those seeking to retain original aesthetics with much lighter weight.

In this entry, I cover my unboxing impressions the E92 Superlight Carbon Trunk."
- Matt

Imported from Germany. 

Making us of DHL connections I established in Europe, the trunk was imported into Canada for 300$ US in 3-4 weeks. The trunk arrived on September 25th '23 and I picked it up at the local post office. 

The box arrived unharmed - for clarity this was the one of the fender's box, but it's very similar in dimensions. 

It's LIGHT!

This trunk is incredibly light, coming in at 3.5 kg / 7.7 lbs. For comparison, the OEM trunk weighs 13.4 kg / 29.5 lbs and is made of metal. The weight figures are explained by the complete vacuum infused carbon construction. 

I am not a leftie, and I don't train as much as I should - still, holding up this trunk with my arm fully extended wasn't a problem. 

Purposeful carbon use. 

The manufacturer of this contract is a contract composite manufacturer for OEM race teams in Germany. Their instincts are to perceive carbon above all for its technical merits: its strength and light weight. Aesthetics are often an auxiliary benefit, and it shows across their design choices. 

For example, the inner carbon sections are painted black. 

The outer shell's underside carbon work peaks through the painted inner section. Every single component of the trunk is carbon: there is no fiberglass structure. 

The outer shell is painted in an off white color, ready for paint. 

You can some resin residue of the vacuum infusion process here. 

This trunk uses 2x2 weave pattern on most parts as it easily conforms to complex curvatures. It's the case here once more.

The unexposed carbon work is fine - but not flawless.

OEM fitment* > all. 

Notwithstanding the aesthetics, the trunk is recreated part to OEM levels.

It's most critical on. trunk as the level of complexity is higher than most body panels due to the intersection with the backglass, quarter panels, rear bumper, lights, locks, emblems and inner components making up the fully assembly trunk. This is where I've had issues with every other trunk I've seen.

The first thing I looked for were the trunk's edges. They are slightly rounded like OEM, unlike the grossly finished corners on my previous replica CSL trunk. 

The light weight of the trunk isn't achieved by cutting corners on structural integrity and material use. You can see the thickness of the trunk here, and how sections were seamlessly bonded together and finished it off.  

How inner lights fit dictates how the trunk to quarter panel gap will loop. This is looking promising. 

The mold is 1:1 replica and was designed with the integrated mini-spoiler.

OEM functionality*. 

Retaining all OEM functionality was key for my use: the lock, lights, liner and everything else in between need to bolt in without a fuss or modifications. These features have been a problem on all my other trunks. 

The only missing cut out on this trunk are for the badges. However, there are small indentions showing where to punch and drill. I unfortunately couldn't catch it with the lighting at the shop. 

Update post test-fit. 

During my DIY test fit, there are actually too many cut-outs for the M3, and a few missing ones.

It was missing the wiring harness cutout for the rubber grommets, and the upper holes for the liner. This particular trunk had the keylock cutouts, I do not have it on my 2012 M3. 

The cuts are clean, with no visibly shaky hands syndrome and overcut found on other trunks. 

The same applies to the inner cut outs where the rubber adjustable mounts are threaded and the liner's push pins are clipped. I've had issues here on other trunks. 

The trunk includes threaded inserts bonded between the sections to create a structurally strong section to mount the trunk to the hinges. This is further important on a composite trunk where things crack if they fail. 

This test trunk was also missing the holes to pop the upper liner's clips. They will be present on the production units. 

Notes on keylock. 

My 2012 M3 has comfort access and did not have a keylock mechanism on the trunk. It is however unrelated to comfort access, BMW simply removed the keylock on all E9x 3 Series starting in February 2009. 

This section is usually where the keylock mechanism bolts up. It will be optional for those who have the keylock. 

Up next: I do a DIY test fitment. Let's see how good fitment really is.