About Us

Services | Engines | Upgrades

We service all generations of the Mazda RX-7, RX-8 and vintage.

We are experts in servicing the RX-7 and RX-8 and engines: 12A, 13B, 13B-MSP, 13B-REW, 20B and the monster 26B.

Located just outside of Columbus Ohio Defined Autoworks provides products to enthusiasts all over the world.
We are local to these surrounding areas:
Akron, Canton, Cincinnati, Cleveland, Dayton, Toledo, Zanesville Ohio, Steubenville, Pittsburgh PA, Lexington and Louisville KY, Detroit MI, Indianapolis IN and Wheeling WV.

We sell our own high performance parts and install products from other manufacturers as well. With decades of experience in servicing and racing rotary vehicles, we know how to get your RX to perform at its best.

We offer custom exhaust, suspension modifications, chassis modifications, and appearance items. All this so your Mazda performs to its capabilities and redefines your expectations of what can be achieved.

We hold the National records for horsepower for Naturally Aspirated (NA) rotary motors. We know how to get the most power, without compromising driveability or reliability.

There is no substitute for racing. We race our own cars, and from that experience continue to grow and expand our capabilities.

We are DEFINED AUTOWORKS - give us a call, we speak Rotary.

Logan Carswell

Owner | Fabricator | Tuner

Engine builder

Chris Tkach

Lead Mechanic | CAD Engineer

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