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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

Undertrays Chassis & Engine

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DISPLAYING 1 to 4 (of 4 products)
A0137A
Product Information
Product Information
Flat underbody panel kit.

Fits
Porsche 987 Cayman - 2005 to 2012

Finishing what Porsche started, we fill in the void in the 987's underbody. The middle of the vehicle creates drag on automobiles and covering the turbulent areas with flat sheet aluminum reduces this significantly. By feeding the rear diffuser less turbulent air, we are able to increase the diffuser's ability to create downforce as well.

Produced from sheet aluminum and powder-coated a durable black color, they look great and function as intended. Pair this with our rear diffuser to reduce lift and drag simultaneously.

Through CFD, we have estimated the underbody panels reduce the coefficient of drag (cD) by 0.007; or 7 points.

Kit Includes
• Flat Underbody Panel
• Bracket, 987.1 (2)
• Bracket, 987.2 (2)
• Hardware Kit, Includes All Hardware for Install

Features
Reduce Drag
Increase Fuel Mileage
Improved Diffuser Function
Flat Underbody
Simple to Install
CNC Cut 5052 Aluminum
Powder coated Black for Durability
Produced in the USA
Stainless Steel Hardware Throughout
Rivet-Nut Install Tool Included
Special Order item
99750452702
Product Information
Product Information
Front undertray cover.

Fits:
Porsche 997.1 C2 2005-08
Porsche 997.2 C2 2009-12
Porsche 997 GT2 2007-13 *LHD cars only
Porsche 997 GT3 2007-11 *LHD cars only
Porsche 987.1 Boxster 2005-08
Porsche 987.2 Boxster 2009-12
Porsche 987C.1 Cayman 2006-08
Porsche 987C.2 Cayman 2009-12

Diagram ref no 1

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99750452702
99750452702

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Special Order item
98750479
Product Information
Product Information
Side Sill Corner Piece. Satin black.


Fits:
Porsche 987 Boxster - 2005 to 2012
Porsche 987 Cayman - 2006 to 2012

Diagram ref no 10



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Related, superseded, cross reference or alternative numbers for comparison.

98750479
9875047930001C
9875047940001C

The product you are viewing cross references to these numbers
Special Order item
9A700769800::1
Product Information
Product Information
Tapping Screw. Black-coated tapping screw. Multiple applications, often used for exterior accessories such as side skirts or underbody protective coverings.
Torx-head - 4.8 x 16mm

porsche

Fits:
Porsche Boxster
Porsche Cayman
Porsche 996
Porsche 997

Click 'Zoom in' for large parts diagram.

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

9A700769800
99907323109
9A700769800

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DISPLAYING 1 to 4 (of 4 products)
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About Undertrays Chassis & Engine

Protect your Porsche’s vital components and optimise aerodynamics with genuine Porsche and reproduction undertrays for the chassis and engine from Design911. These panels are designed to shield the underbody and engine bay from debris, water, and road damage, while also improving airflow and vehicle stability at speed.

Each undertray is precision-manufactured to OEM specifications, ensuring perfect fitment, structural strength, and long-term durability. Whether replacing a damaged belly pan or restoring a classic Porsche’s underbody, our selection includes factory-original and high-quality reproduction undertrays to suit every model - from early air-cooled 911s to the latest Taycan and 992 series.

Constructed from lightweight yet durable materials such as ABS plastic, aluminium, or composite blends, these panels combine protection, performance, and authenticity to keep your Porsche in peak condition.

Genuine Porsche Undertrays
Factory-original undertrays built to Porsche’s exact specifications. Offer superior fitment, durability, and aerodynamic precision.

Reproduction Undertrays & Panels
High-quality reproduction alternatives offering OEM-grade protection and compatibility for a range of Porsche models - ideal for restorations.

Engine Undertrays & Guards
Protect the engine bay from dirt, heat, and road debris. Designed for easy installation and improved airflow efficiency.

Chassis Undertrays & Belly Pans
Full-length chassis panels that reduce drag and shield underbody components, maintaining Porsche’s factory aerodynamic performance.

Mounting Brackets & Fixing Hardware
OEM-spec clips, screws, and brackets required for secure undertray installation, ensuring a vibration-free and stable fit.

Classic Porsche Underbody Panels
Authentic reproduction undertrays and guards for heritage models such as the 911 Classic, 964, and 993 — essential for concours restorations. 

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