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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram
Porsche specialists based in the UK
Porsche > 991 (911) MK1 2012-2016 > 991.1 Carrera C2S 3.8L (400Bhp) 2012-16 > Chassis / Bodywork > Bumpers Rear >

Lower spoiler / Diffuser / Valance

Lower spoiler / Diffuser / Valance

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Rennline carbon fibre rear diffuser. Porsche 991.1 - 99150581100, 99150581100E10
6
Rennline carbon fibre rear diffuser. Porsche 991.1
E236
Product Information
Product Information
Rennline carbon fibre rear diffuser. 

rennline

Fits:
Porsche 991.1 Carrera 2 / Carrera 4
Porsche 991.1 Carrera 2S / Carrera 4S

Product Description

Rennline's carbon fiber rear diffuser is a great way to give the rear of your 991 an eye catching OEM+ upgrade by replacing the boring plastic unit. 

Made from hand-laid carbon fiber using the latest manufacturing technologies, our diffuser is sure to add a completely bespoke feel to the back of your 911 (991.1)

  • Hand-laid carbon fiber construction
  • High gloss finish with UV and heat protection
  • Complete carbon fiber replacement for OEM diffuser
  • Designed from the ground up using state of the art 3D scanning technology
  • Installs in place of OEM unit with no adhesive
  • Fits all 991.1 Carrera/S models with standard bumpers
  • Does not fit Turbo or GT models
  • OEM fit and finish





Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

E236
99150581100
99150581100E10

The product you are viewing cross references to these numbers
DISPLAYING 1 to 1 (of 1 products)
About Lower spoiler / Diffuser / Valance

Enhance both the performance and aesthetics of your Porsche with rear bumper lower spoilers, diffusers, and valances from Design911. These aerodynamic components are engineered to optimise airflow, increase stability, and refine your vehicle’s rear-end styling. Whether you’re upgrading for track performance or restoring factory bodywork, each part is crafted to OEM specifications for perfect fitment and durability. Choose from factory replacement panels, lightweight performance diffusers, or custom valances to achieve the look and function your Porsche deserves. From classic air-cooled models to the latest sports variants, Design911 provides precision-built aerodynamic parts trusted by Porsche owners worldwide.

Rear Diffusers
Aerodynamic Porsche diffusers designed to improve underbody airflow, reduce drag, and enhance rear-end downforce. Available in OEM and performance-grade materials.

Lower Rear Spoilers & Lips
Subtle yet effective spoilers that reduce turbulence and improve stability at high speeds. Designed for a seamless factory fit and refined Porsche styling.

Rear Valance Panels
Replacement and performance rear valances that complete the bumper assembly, adding structure and style while maintaining aerodynamic efficiency.

Classic Porsche Lower Trims
Authentic reproduction rear valances and diffusers for classic models such as the 911, 964, and 930 Turbo — ideal for concours restorations.

Carbon Fibre & Lightweight Aero Parts
High-performance lightweight carbon fibre or composite aero parts designed for motorsport applications and modern Porsche performance builds.

Mounting Brackets & Fitting Accessories
OEM-quality brackets, fasteners, and hardware for easy installation of Porsche diffusers and valance panels, ensuring secure fitment and factory alignment.

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