Exterior Components› Body Panels and Components

Karbonius

CSL Carbon Roof Panel

$2,479.00

SKU: E46T01-CF-1

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Overview

The Karbonius E46 M3 CSL Carbon Roof Panel is a full structural carbon fiber replacement for the factory steel roof on all E46 Coupe models. This upgrade delivers an effective center-of-gravity reduction by removing weight from the highest point of the vehicle, mirroring the design of the original BMW M3 CSL. Weighing only 3.3 kg, it saves approximately 5 kg compared to the OEM steel roof.
Show original supplier description
The Karbonius E46 M3 CSL Carbon Roof Panel is a direct, full structural replacement for the factory steel roof on all E46 Coupe models, including the M3 and M3 CSL variants. This carbon fiber upgrade is engineered to significantly reduce the vehicle's center of gravity by removing approximately 5 kg of weight from the highest point of the car, a principle proven in motorsport and utilized in the original M3 CSL construction. Constructed from 100% prepreg carbon fiber and cured in an autoclave for maximum structural rigidity, this roof panel weighs just 3.3 kg. The integrated drip rail moorings ensure a clean, factory-correct installation. The panel is finished with a high-gloss varnish that includes UV protection for long-term durability and aesthetics, and each piece is individually numbered for authenticity. Manufactured in Spain under strict ISO 9001 quality management standards, this roof panel comes with a 2-year manufacturer warranty. Professional installation is recommended to ensure proper fitment and structural integrity.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandKarbonius
Part NumberE46T01-CF-1
CategoryExterior Components
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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