Street & Performance

Driving a Porsche® means you care. Whether it’s a daily driver or concourse car, keeping it running in optimal condition is your goal and ours. Our staff of non-commissioned, specially-trained technicians will provide the service and diligence you have come to expect.

Street & Performance Services  >

Race Car Development
& Support

Not everything comes off the shelf nor can it be replicated. Often, each set up is custom and why only our talent can design, build cars, components and create engine or exhaust modifications that enhance your vehicle’s performance based on our over 20 years of real race experience.

Race Car Development Services  >

Auto Body Repair
& Customization

At 911 Design, we employ only the most qualified auto body technicians to perform the complex structural, mechanical, body and refinish work required to meet and exceed industry quality standards and in the same manner as an authorized Porsche® Collision Center.

Autobody Repair Services  >

Why Choose Us?

  • We are a full-service repair and restoration facility
  • We specialize in custom fabrication, design and performance upgrades for all Porsche models.
    (We also work on Ferrari and Lamborghini models as well)
  • Served the Porsche® community both inside and outside of California for over 20 years
  • Collision and custom work on ANY make or model vehicle – American brands as well
  • Aluminum and Carbon Fiber repair or replacement
  • Over 20 years of racing experience – club events and professional racing series’ provide a wealth of vehicle performance knowledge
  • Offers an “Arrive & Drive” customer racing program that includes a full race crew, trailering and pit/paddock support
  • Conveniently located on the 10 Freeway in Montclair, CA – with easy on/off access and ample loading areas

Shop Location

Recent News & Work

911 Design added 12 new photos.

Our customer's 1989 Porsche 964 Carrera custom built by 911 Design was featured on Super Street's website. Click the link below to check out the article.
#911Design #Porsche #SuperStreet
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911 Design added 7 new photos.

Progress report on our customer’s 1968 Porsche 911S! We have finished all of the necessary body repairs and finished the paint work. We’ve sprayed the car back to its original color of “Polo Red”. We are currently color sanding the car to bring it to a high mirror shine.

The next step will be to reassemble the car. This means that not only do we have to put together the body we will also begin putting together the mechanical and electric parts of the car. We will have to put the motor in which we have had completed for several months. We will also have to start running wires throughout the car and much more.

Once we’ve finished reassembling the car we will then move onto the interior. More pictures to come of this classic Porsche.
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Susan Gough-Fleming, Derrick A. Capers and 17 others like this

Gordon NesbittWas this a Euro car? My understanding was that the '68 S models were not imported to the US due to regulatory issues and were instead replaced by the 911L.

2 weeks ago

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911 Design added 9 new photos.

Today we finished work on our customer’s 2009 Porsche Cayman. He frequently uses this car as a track day car and brought it to us to make some adjustments that will make it handle better while out on the track.

We removed the original stock springs and replaced them with H&R lowering springs. This will improve the handling of the car when going around corners. The front spring came out very easily as opposed to the rear springs. To remove the rear spring we had to remove most of the rear interior to gain access to bolts that hold the springs in place. Once that was accomplished it was a matter of installing the new springs and reassembling the car. We then did an alignment on the car.

When installing lowering springs we trust only H&R and Eibach parts.
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Mike Keller, Jodi Mixon and 14 others like this

Robert JuarezThat's good to know.

3 weeks ago   ·  1

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Call us today to schedule an appointment: (909) 982-9111