PSM Style Dry Carbon Trunk Spoiler — M3, M4 & M340i
Subtle, quick, and the cheapest way into real carbon.
Only 4 left
Free shipping — 6-8 business days
- 100% pre-preg dry carbon, autoclave cured
- Test-fitted on a real chassis before shipping
- Free shipping — delivered in 6–8 business days
- 2-year structural warranty & fitment guarantee
- Tape-on install over the factory trunk lip — no drilling
- Fits the G80, G82 and G20 M340i trunk profile
- Pre-applied 3M VHB automotive tape, ready to go out of the box
- Our lowest-priced structural carbon part at $249.99
The PSM profile is popular because it's restrained. It lifts the trunk line just enough to finish the rear of the car without turning it into a track build, and it works on a daily driver in a way a big wing doesn't.
This is a tape-on part with 3M VHB already applied at the factory. You clean the trunk lip, peel, place, and hold. The hardest part of the job is being patient enough to get the placement right the first time, because the tape does not let go once it's down.
At $249.99 it's the least expensive way to get genuine dry carbon on the car, which is why it moves ten units a month across three different chassis.
G80 M3 (2021+) · G82 M4 (2021+) · G20 3 Series M340i and 330i, both pre-LCI and LCI. Sedan and coupe trunk profiles. Not for the G83 convertible.
Not all carbon is equal
Every KrazyCarbon part is pre-preg dry carbon cured in an autoclave. Here is what that changes against the wet-lay parts sold on overseas marketplaces.
- Process
- Pre-preg, autoclave cured
- Hand-laid wet lay-up
- Resin content
- ~35% — resin is squeezed out
- 50%+ — heavy and soft
- Weight
- Up to 40% lighter
- Heavier than the OEM panel
- Weave alignment
- Locked in the mould
- Drifts and pillows
- UV stability
- UV-stable clear coat
- Yellows in 12–24 months
Complete the look
Frequently bought together
Save 10% when these ship in one box.
Answers
Frequently asked
- Dry carbon starts as pre-preg sheet — the resin is already in the fibre in an exact ratio, then cured under pressure in an autoclave. There is no excess resin, so the part is lighter, stiffer and the weave stays perfectly straight.
- Every mould is test-fitted on a real vehicle before it goes into production, and each product page lists exact chassis, trim and pre/post-LCI fitment. If a part does not fit as described, we cover return shipping.
- Free shipping on every order, arriving in 6-8 business days. You will get tracking as soon as it ships.
- Trim, mirror caps and interior parts are straightforward DIY jobs with the included hardware and guide. For front lips, diffusers and spoilers we recommend a professional installer.
- Yes. Every part gets a UV-inhibited clear coat, gloss or satin, so the weave does not yellow or bloom after sun exposure.
- 30 days on uninstalled parts in original packaging, refunded to your original payment method, plus a 2-year warranty against delamination and clear-coat failure.
From the forums
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