Gentex Brings Slim Auto-Dimming Mirror to SEMA

Custom-car owners can now see the GNTX-R carbon fiber rearview mirror, sold through Ringbrothers' online parts store, at the Gentex booth in Las Vegas.

Updated on Nov. 3, 2026 in Car Culture

A dark carbon-fiber rearview mirror housing sits on a plain display plinth in a wide, pale convention hall, with a custom car softly blurred in the distance. — Gentex is showing its slim GNTX-R auto-dimming carbon fiber rearview mirror at the SEMA show in Las Vegas, where custom-car owners can see it in person through Ringbrothers' online parts store. AI Illustration. Upload story photo >

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Gentex is showing its automotive technology at the SEMA show in Las Vegas, November 3-6, 2026, at the Las Vegas Convention Center. Ringbrothers and Classic Car Studio unveiled custom vehicles at the Gentex booth featuring Gentex technology.

Why it matters

For car owners and custom-car enthusiasts, the displayed technology shows where mirror and in-cabin features are heading: automatic-dimming and digital rearview mirrors, dimmable sun visors, and car-to-home automation. The GNTX-R mirror is offered for the custom market and sold through Ringbrothers' online parts store, so enthusiasts can see the product in person before considering it for their own build.

The Gentex booth in Central Hall, Hot Rod Alley (booth 23889) features automatic-dimming mirrors, digital rearview mirrors, HomeLink, and dimmable sun visors. Two vehicle unveils begin at 10:30 a.m. on November 3, 2026, with Billie, a 1965 Pontiac GTO convertible, and Brownfinger, a 1970 Plymouth 'Cuda.

The players

Gentex

A major automotive mirror and electronics supplier whose automatic-dimming and digital rearview mirrors are installed in many production vehicles.

Ringbrothers

A custom car builder whose vehicles and parts are sold through its online store, including the GNTX-R mirror.

Classic Car Studio

A St. Louis, Missouri restoration and custom car business that debuted the Brownfinger Plymouth 'Cuda.

Jarod DeAnda

The emcee hosting the vehicle unveils at the Gentex booth.

The details

The GNTX-R uses electrochromic technology with integrated sensors, a microprocessor, and a proprietary darkening gel to eliminate rearview mirror glare, and it comes in a slim carbon fiber profile for custom cars. The two vehicle unveils run in succession at the Gentex booth and are hosted by emcee Jarod DeAnda. Brownfinger is powered by a DSR Performance 7.0L Hemi V8 rated at 1,200 HP.

November 3, 2026, 10:30 a.m.: Vehicle unveils begin at the Gentex booth.
November 3-6, 2026: SEMA show held at the Las Vegas Convention Center.

The Home Front

Gentex's electrochromic mirror technology, now offered in a slim aftermarket form for custom cars, extends the company's automatic-dimming line beyond factory installations. The display at SEMA positions in-cabin and car-to-home features alongside the custom builds that showcase them.

If you are planning a custom build or aftermarket upgrade, the GNTX-R is sold through Ringbrothers' online parts store in red or black. Have any mirror or wiring work installed by a licensed automotive professional.

The takeaway

Automatic-dimming and digital mirrors are moving from factory cars into the custom market, so enthusiasts planning builds should compare fit and wiring needs before ordering. Visit the Gentex booth (23889) in Central Hall at SEMA to see the GNTX-R in person.