Karbonius CSL-Style Carbon Trunk Lid for BMW G82 M4 – OEM Fit, Fraction of the Price
Ryan Morgan July 17, 2025
With BMW pricing the factory G82 M4 CSL trunk lid at over $35,000, it's out of reach for most enthusiasts. Fortunately, Karbonius—a Spain-based manufacturer known for exceptional carbon fiber craftsmanship—offers a precise, high-quality alternative at a fraction of the cost. Handmade in Spain using 100% prepreg carbon fiber sourced from Italy, the Karbonius CSL-style trunk is a true 1:1 reproduction of the original M4 CSL lid.
Weighing in at just 4.7 kg (10.3 lbs), it delivers the lightweight performance and visual aggression of the OEM part with no compromise in fitment or finish. Each trunk lid is built entirely in-house at Karbonius using motorsport-grade materials and processes. The result is a flawless, ultra-lightweight component that fits like OEM and saves you tens of thousands in the process.
For G82 M4 owners seeking an authentic CSL look with proven quality, the Karbonius trunk lid stands out as the best alternative to the factory part.
Product Details:
- Precision fitment for easy, hassle-free installation
- Constructed from 100% prepreg carbon fiber
- Molded and autoclave-cured for maximum strength and finish quality
- Lightweight design – only 4.7 kg (10.3 lbs)
- Each unit is individually numbered and exclusive
- Backed by a 2-year manufacturer warranty
Designed, engineered, and handcrafted in Spain under strict quality controls and in compliance with UNE-EN ISO 9001:2015 standards.
Factory matching primer outside with matte 4x4 carbon weave inner
Optional 2x2 twill weave Gloss carbon outer and inner
