Carbon Fiber Parts
BMW F85 X5 M/X6 M Carbon Fiber Rear Diffuser | Hamann Aerodynamic Package
OEM+ · PERFORMANCE · BESPOKE DESIGN
JC AUTO CARBON manufactures the Carbon Fiber Rear Diffuser for the BMW X5 and BMW X6, made from high-quality Carbon Fiber with a 2×2 twill weave for an exact fit and a lasting finish. In the rear diffuser category, we also carry 329 more carbon fiber parts for other models, all built to the same standards. For the BMW X5 and BMW X6, we offer 5 styling packages: BMW X5 Aerodynamic kits, BMW X5 Body Kit, BMW X6 Aerodynamic kits, BMW X6 Body Kit, and BMW X6 Interior Package. Many products are not listed due to NDA agreements — but we make standard and custom carbon fiber parts for any car, see how our custom process works. OEM/ODM and private label supported, MOQ 20 units.
| Specifications | Value |
|---|---|
| Product Type | Rear Diffuser |
| Compatible Models | BMW X5 M/X6 M F85/F86 (X5) |
| Fitment | BMW F85 / BMW F86 |
| Model Variant | Standard |
| Year | 2015-2019 |
| Material | Carbon Fiber |
| Installation Method | 3M Tape or Screws |
Engineered Carbon Fiber, Tailored to Your Build
From raw material selection to structural engineering — explore how every JCCARBON component is customized for performance, fitment, and visual impact.
Carbon Fiber Material Options — two proven manufacturing routes, each optimized for a different balance of cost, weight, and performance.
Wet Carbon Fiber
Best for exterior upgrades — front lips, side skirts, canards
Manufacturing Process: Carbon fiber fabric combined with resin, formed through vacuum infusion or composite molding, followed by polishing, painting and clear-coat protection.
- Clear carbon weave appearance
- High-gloss visual effect
- Suitable for street modification projects
- Better cost-performance balance
Dry Carbon Fiber
Best for lightweight & high-strength, track-grade performance
Manufacturing Process: Prepreg carbon fiber formed under controlled temperature, pressure and curing time to achieve precise fiber orientation and resin content.
- Lower weight
- Higher strength consistency
- Better stiffness control
- For performance vehicles & premium projects
JCCARBON utilizes premium carbon fiber materials sourced from leading suppliers such as Toray, combined with advanced weaving technologies to produce high-quality fabrics in multiple grades (3K, 6K, 12K, unidirectional, and bidirectional). Each material undergoes rigorous tensile, thermal, chemical, and mechanical testing — ensuring consistency, reliability, and superior performance from raw material to final product.
3K Twill
3K Plain
6K Twill
6K Plain
12K Twill
12K Plain
Satin Weave
Non-woven
Unidirectional
BidirectionalWeave Pattern Options
2×2 Twill Weave
The most popular weave pattern in the automotive aftermarket. Characterized by its diagonal parallel rib pattern, it offers excellent drapability over complex curved automotive surfaces.
Visual Style: Deep, dynamic 3D reflection that accentuates the vehicle’s body lines.
Best For: Large exterior aero parts, including front hoods, rear diffusers, and side skirts.
1×1 Plain Weave
A tight, checkerboard pattern woven in a simple over-under structure. It offers a highly stable grid look with high structural uniformity.
Visual Style: Subtle, neat, and highly technical appearance — often preferred by European OEM manufacturers.
Best For: Mirror covers, interior dash trims, and steering wheel accents requiring extreme dimensional stability.
Forged Carbon
Formed by compressing chopped carbon fibers with resin under immense pressure. Because the fibers are randomly oriented, every single piece we manufacture is entirely unique.
Visual Style: A luxurious, multi-layered marble-like texture with metallic depth.
Best For: Premium bespoke projects, custom engine covers, wheel center caps, and high-end interior trims.
Hybrid Weave
Custom weave variations engineered to break the mold — specialized loom setups produce unique structures such as Herringbone (V-weave), honeycomb, or custom checkerboard weaves.
Visual Style: Highly exclusive, technical look that immediately differentiates your brand’s products.
Best For: Premium signature aero packages and custom engine covers.
Kevlar / Aramid Mix
Premium carbon fiber woven with high-tenacity DuPont™ Kevlar® (Aramid) fibers, introducing structural impact resistance combined with striking visual customization.
Visual Style: Seamless color integration (Red/Black, Blue/Black, Gold/Black) matching OEM paint or brand identities.
Best For: High-wear, impact-prone areas like front splitters, under-trays, and motorcycle fairings.
We offer a full range of surface finishes — matte, gloss, and clear-coat options — with precise control over reflectivity and final appearance. JCCARBON’s automotive-grade, dust-free spray facility combines multi-layer manual polishing to ensure mirror-like smoothness that withstands harsh weather, UV radiation, and high-speed road debris.
High-Gloss Clear Coat
The industry standard for showcasing intricate carbon weaves. We apply 3–4 layers of high-solid automotive clear coat, followed by rigorous multi-stage hand polishing.
Visual Effect: A wet-look, deep 3D gloss surface that accentuates the carbon pattern under any lighting.
Best For: Exterior aerodynamics (front lips, rear diffusers, spoilers) and high-visibility body panels.
Matte / Satin Finish
A sophisticated finish offering a sleek, satin-smooth texture. It eliminates harsh reflections while maintaining the tactile, high-tech essence of raw carbon fiber.
Visual Effect: A non-glare, understated stealth look. Highly resistant to visible fingerprints and dust.
Best For: Interior dash trims, steering wheel bezels, engine covers, and vehicles with satin/matte wraps.
Advanced UV-Protection Coating
Anti-yellowing & weather-resistant armor. Our coating formula is infused with advanced UV inhibitors that block harmful ultraviolet radiation.
Best For: Every exterior component exposed to long-term sunlight and extreme climates.
Carbon fiber is no longer limited to classic black. Through in-house dual-fiber weaving with genuine Kevlar® and specialized UV-stabilized chromatic clear coats, we offer rich, deep, and stable color infusions that align with your brand identity or vehicle paint codes — engineered to withstand extreme solar radiation without fading or yellowing.
Classic Black Series
Gloss Black
Standard black carbon with a high-gloss, mirror-polished clear coat.
Matte Black
Standard black carbon with a non-reflective, satin/matte clear coat.
Smoked Black
Black carbon finished with a semi-transparent smoked black tint coat.
Kevlar Hybrid Weaves
Red & Black Hybrid
1:1 interlaced weave of black carbon and red aramid (Kevlar) fibers.
Blue & Black Hybrid
1:1 interlaced weave of black carbon and blue aramid (Kevlar) fibers.
Yellow & Black Hybrid
1:1 interlaced weave of black carbon and yellow aramid (Kevlar) fibers.
Metallic & Candy Tints
Texalium Silver
Glass fiber weave with micron-level aluminum coating — metallic silver finish.
Candy Green Tint
Black carbon base topped with semi-transparent green clear coat.
Candy Red Tint
Black carbon base topped with semi-transparent red clear coat.
Candy Blue Tint
Black carbon base topped with semi-transparent blue clear coat.
Forged Carbon Series
Standard Forged Carbon
Chopped carbon strands compressed under high pressure — irregular marble pattern.
Gold Flake Forged
Chopped carbon mixed with gold leaf flakes, molded under high pressure.
Silver Flake Forged
Chopped carbon mixed with silver/aluminum flakes, molded under high pressure.
Metallic Flake Forged
Chopped carbon mixed with metallic colored pigment flakes, molded under high pressure.
Select structural and mounting solutions based on part size, transport needs, replacement requirements and load-bearing conditions. From mounting strategy to fitment validation, we develop carbon fiber parts that fit precisely, install securely, and remain stable in real-world use.
Structure Design Solutions
One-Piece Structure Design
One-piece molding provides a cleaner appearance with no visible joint seams and higher overall rigidity.
Multi-Piece Structure Design
Multi-piece construction improves transportation efficiency, reduces replacement cost, and allows flexible assembly for larger body kit systems.
Mounting System Engineering
OEM Replacement Installation
For replacement parts such as hoods and fenders, we focus on OEM mounting points, hinge areas, lock positions, panel gaps, and direct-fit installation accuracy.
Add-On Installation
For add-on exterior parts, we design the installation method using 3M adhesive, clips, bolts, or combined fixing solutions according to part shape and vehicle surface.
Bracket Installation
For large aerodynamic components, bracket-mounted installation distributes load and maintains stability under high-speed driving. Brackets and fasteners can be developed as part of the complete solution.
Embedded Hardware Service
Metal mounting inserts can be embedded during the carbon fiber molding process to improve load distribution, installation strength, and long-term stability.
- Embedded mounting points
- Stronger load distribution
- Reduced loosening risk
- Suitable for intake systems and structural parts
- Better long-term assembly stability
SELECTED M2 CUSTOM packages
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Our Development Process
Different carbon fiber projects need different development logic. Choose the path that best matches your project type — exterior styling, aerodynamic performance, or structural composite parts.
Overall timing note:
After design data is confirmed, most projects can complete first samples in 45–58 days. CNC mold making usually takes 15–20 days, mold replication 20–25 days, and sample production 15–20 days. Early design and confirmation time are not included.
Exterior Body Kit Development
Best for front lips, side skirts, diffusers, spoilers, hoods, fenders and complete body kits.
CFD Aero Parts Development
Best for splitters, rear wings, diffusers, canards, hood vents and track-focused aero kits.
Structural Carbon Parts Development
Best for intake systems, interior structures, brackets, embedded mounting parts and CAD-driven components.
Why Choose JC AUTOCARBON
Engineering-Driven Carbon Fiber Manufacturing
JC AUTOCARBON is the automotive-focused platform powered by JCSPORTLINE’s global carbon fiber engineering and manufacturing capabilities.
Built on years of composite engineering experience, we provide complete support from product concept, engineering development, and tooling to mass production.
Through JC AUTOCARBON, automotive professionals and brands access reliable carbon fiber solutions backed by proven manufacturing capability.
150,000 m²
Manufacturing Area
80+
CNC Machines
150/mo
Mold Projects
5,000+
Completed Projects
ISO 9001 · IATF 16949 · CE Certified Quality Management
FREQUENTLY ASKED QUESTIONS
NOT SURE YET? TALK TO US FIRST
NOT SURE YET? TALK TO US FIRST
MOQ 20 PCS
Low minimum order
Premium Material
Carbon fiber / FRP
100% Fitment
Perfect fit guaranteed
OEM / ODM
Custom development
Golbal Shipping
Worldwide delivery