My E90 track car is a stripper with DCT as its only option. This means I’m one of the lucky few to have an E90 slicktop vs the sunroof version.
For whatever reason BMW did not make the E90 with a CF roof. They acknowledged the error of their ways in the F80 and now the G80 gets the CF roof standard on the 4 door M. So everyone is in on the party except the E90! We must fix this!
I’ve considered switching the roof to CF for a long time but wasn’t willing to pull the trigger until I heard Slonik (www.instagram.com/slon_workshop/?hl=en) was building one. Aftermarket CF tends to look ok in pics but in person it looks like garbage. I’ve never been able to put aftermarket CF on my car… until now
Anyway, here it is! I went for a bigger than stock weave (large twill weave) so it has a more defined look vs the OEM look. It reminds me a bit of the M2 CS roof panel vs the E9X’s.
-Vacuum infusion with post-curing
-Installed with the same structural glue BMW recommends for the F8X roof
-Options – oem look plain weave, small or large size twill wave. Any other options on request
-Weight loss of 16lb (7kg) in slicktop cars and 55lb (25kg) in sunroof cars
-Part weight: 8lb (3.7kg)
-Optional antenna hole (or you can cut it yourself with the template). I went for the more aerodynamic no antenna
-Covered with special protective polyurethane primer and 3 layers of high quality sikkens polyurethane clearcoat lacquer (you can polish it a few times without respraying)
-It also gives some additional torsional rigidity (small figures, but glued carbon is more rigid than spot welded steel)
E46 M3 18500
E46 M3 CSL 18750
Pics comparing to E92
Closeup of the weave
Pics showing install
To install you basically cut out the front and rear glass hoping not to break them. Then you cut out the roof, prepare the surfaces, glue the CF one in.
If your car was a slicktop the reinforcements are in place, but if it was a sunroof car you need to weld in a replacement, or you can glue in a CF reinforcement piece Slonik has
If the body is scratched then it may rust, so anything that gets scratched must be passivated before installing the roof or the glass
In my ‘before’ pics you can see I have a vinyl wrap on the roof as well as a Bimmerworld banner. My front glass had a 16” crack in it but it didn’t break removing it. Of course this was replaced with new OEM BMW glass during the reinstall
Before:
Front glass out:
Rear glass out:
Spot welds getting drilled out
Headliner removed
Car has no glass! Weight reduction FTW!
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Test fit the CF roof
After gluing the roof you do the front and rear glass
You let the car sit for a couple days for the glue to dry and voila, CF roof on an E90!
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For whatever reason BMW did not make the E90 with a CF roof. They acknowledged the error of their ways in the F80 and now the G80 gets the CF roof standard on the 4 door M. So everyone is in on the party except the E90! We must fix this!
I’ve considered switching the roof to CF for a long time but wasn’t willing to pull the trigger until I heard Slonik (www.instagram.com/slon_workshop/?hl=en) was building one. Aftermarket CF tends to look ok in pics but in person it looks like garbage. I’ve never been able to put aftermarket CF on my car… until now
Anyway, here it is! I went for a bigger than stock weave (large twill weave) so it has a more defined look vs the OEM look. It reminds me a bit of the M2 CS roof panel vs the E9X’s.
-Vacuum infusion with post-curing
-Installed with the same structural glue BMW recommends for the F8X roof
-Options – oem look plain weave, small or large size twill wave. Any other options on request
-Weight loss of 16lb (7kg) in slicktop cars and 55lb (25kg) in sunroof cars
-Part weight: 8lb (3.7kg)
-Optional antenna hole (or you can cut it yourself with the template). I went for the more aerodynamic no antenna
-Covered with special protective polyurethane primer and 3 layers of high quality sikkens polyurethane clearcoat lacquer (you can polish it a few times without respraying)
-It also gives some additional torsional rigidity (small figures, but glued carbon is more rigid than spot welded steel)
E46 M3 18500
E46 M3 CSL 18750
Pics comparing to E92
Closeup of the weave
Pics showing install
To install you basically cut out the front and rear glass hoping not to break them. Then you cut out the roof, prepare the surfaces, glue the CF one in.
If your car was a slicktop the reinforcements are in place, but if it was a sunroof car you need to weld in a replacement, or you can glue in a CF reinforcement piece Slonik has
If the body is scratched then it may rust, so anything that gets scratched must be passivated before installing the roof or the glass
In my ‘before’ pics you can see I have a vinyl wrap on the roof as well as a Bimmerworld banner. My front glass had a 16” crack in it but it didn’t break removing it. Of course this was replaced with new OEM BMW glass during the reinstall
Before:
Front glass out:
Rear glass out:
Spot welds getting drilled out
Headliner removed
Car has no glass! Weight reduction FTW!
Test fit the CF roof
After gluing the roof you do the front and rear glass
You let the car sit for a couple days for the glue to dry and voila, CF roof on an E90!
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