Audi R8 Gen 1 (2006-2015) LBW Prepreg Dry Carbon Fiber Wide-Body Rear Diffuser

Engineered for Audi R8 Gen 1 (2006-2015) owners running the LBW wide-body series, this Prepreg (Dry) Carbon Fiber LBW Rear Diffuser delivers a coordinated wide-body aesthetic and track-grade aggression to the rear of your mid-engine supercar. Manufactured in Europe to factory-spec mounting tolerances and quality-controlled by BYC Performance, this Audi R8 LBW carbon rear diffuser bolts to standard Gen 1 mounting points and shares its visual language with the rest of the LBW aero set.

If you're building a serious Audi R8 wide-body project and need a rear diffuser that completes the aero set while exceeding the factory plastic part in finish and weight, this dry carbon LBW rear diffuser is built for you. Autoclave-cured prepreg carbon fiber delivers noticeably lighter weight than wet-lay carbon parts and outstanding long-term UV resistance. Engineered to complement the LMS racing DNA of the Gen 1 R8's 4.2L V8 FSI (420 hp) and 5.2L V10 FSI engines (V10 525 hp, V10 Plus 550 hp, R8 GT 560 hp).

Key Features

• Prepreg (Dry) Carbon Technology: Pre-impregnated carbon plies cured in an autoclave under high heat and pressure; a more consistent weave and balanced resin distribution.
• Wide-Body Aggressive Geometry: Coordinated visual language with the rest of the LBW set (front lip, side skirts, spoiler); noticeably wider and lower than the OEM diffuser.
• Significant Weight Savings: Noticeably lighter than the factory plastic part.
• Race-Grade Strength: Carbon fiber offers very high strength for its weight.
• Aerodynamic Performance: Widened diffuser channels accelerate underbody airflow and generate downforce at speed.
• 2x2 Twill Carbon Weave: Authentic carbon fiber pattern under a high-gloss UV-protective clear coat.
• OEM Mounting Points: Bolts to standard Gen 1 rear bumper underbody mounting points; the diffuser itself does not require fender cutting.
• UV & Chemical Protection: Long-life clear coat protects against fading, cracking, fuel splash, and road tar.

Prepreg (Dry) Carbon vs. Wet Carbon — Which Is Better?

Most aftermarket carbon parts are made using wet lay-up, where resin is applied by hand and cured at room temperature — leaving air voids and inconsistent weight. Prepreg (dry) carbon:

• Cured in an autoclave under high heat and pressure → a more consistent weave
• A controlled resin ratio → lighter and stronger
• The production method widely chosen in motorsport
• Minimal UV fading over years of use

Vehicle Fitment

This Audi R8 Gen 1 LBW rear diffuser fits the following models perfectly:

• Audi R8 Coupé Gen 1 (2008-2015) — V8 4.2L FSI (420 hp)
• Audi R8 Coupé Gen 1 (2008-2015) — V10 5.2L FSI (525 hp)
• Audi R8 V10 Plus Coupé Gen 1 (2012-2015) — V10 5.2L (550 hp)
• Audi R8 GT Gen 1 (2011-2012, limited edition) — V10 5.2L (560 hp)
• Audi R8 Spyder Gen 1 (2010-2015) — V8 4.2L / V10 5.2L

Important notes:

• This product is NOT compatible with the next-generation Audi R8 Gen 2 (2015-2024). Gen 1 and Gen 2 have completely different chassis and bumper geometry.
• The LBW wide-body aesthetic looks best with wider rear arches; the diffuser itself does not require fender cutting, but wider wheel offsets and tire packages may benefit from tire clearance verification.
• Best applied as a coordinated LBW set (front lip + side skirts + rear diffuser + spoiler) for visual consistency.

Technical Specifications

• Material: Prepreg Carbon Fiber (2x2 Twill Weave)
• Manufacturing: Autoclave Cure
• Finish: High-Gloss Clear UV-Protective Resin
• Color: Natural carbon weave black
• Origin: Europe

Installation Notes

Installing the Audi R8 LBW carbon diffuser is a direct replacement of the factory part. Professional installation is recommended:

1. Raise the vehicle and remove rear bumper underbody screws.
2. Detach the OEM plastic diffuser from clips and bolts.
3. Test-fit the LBW carbon diffuser for alignment.
4. Secure with supplied hardware to the manufacturer's recommended torque.
5. Verify exhaust tips are centered in diffuser cutouts.
6. If running the full LBW set, verify panel alignment with adjoining parts.

Care & Maintenance

Wash with pH-neutral car shampoo. Apply carbon-safe sealant every 6 months. Keep pressure washer nozzle at least 30 cm from surface.

FAQ

Does this fit the Audi R8 Gen 2 (2015-2024)?
No. The R8 Gen 1 and Gen 2 have completely different chassis and rear bumper geometry.

Does the wide-body look require fender cutting?
The diffuser itself does not require fender cutting; it bolts to standard Gen 1 underbody mounting points. However, the LBW aesthetic pairs best with wider rear wheel offsets and tire packages — verify tire clearance.

Compatible with the standard (non-LBW) Gen 1 rear bumper?
Yes — this diffuser mounts to the standard Gen 1 rear bumper while sharing the LBW kit's wide-body visual language.

Difference between V8 4.2 and V10 5.2 fitment?
None. All Gen 1 trims share the same rear underbody mounting points.

Compatible with Audi R8 Spyder?
Yes — Spyder Gen 1 uses the same rear diffuser mounting points.

Compatible with Lamborghini Gallardo?
No. R8 Gen 1 and Gallardo share a platform but have completely different rear bumper designs.

Will rain damage dry carbon parts?
No. Autoclave-cured prepreg carbon is fully waterproof and weather-resistant.

Shipping time?
In-stock items ship within 1-3 business days. International shipping available.

Warranty?
BYC Performance offers a 12-month manufacturer warranty.

Why BYC Performance?

BYC Performance is a Turkey-based performance tuning specialist sourcing premium carbon fiber parts from leading European manufacturers and supplying them to the Turkish market. Our catalog includes Audi R8 carbon parts, Audi RS carbon diffusers, BMW M3 carbon diffusers, Porsche carbon spoilers, and many more high-quality carbon components.