Serving Socal’s die-hard Mazda “rotorheads” with pride for 25 years.

Devoted followers of Mazda in southern California have eagerly anticipated an annual event created especially to honor the cult classic rotary engine for the past 25 years, and throughout that time, interest and participation have only increased.

The Southern California RX Club, in collaboration with Mazda, organizes Sevenstock, an annual event that was previously held at the automaker’s Irvine, California, premises. But by 2010, everything had changed as the number of cars and attendees increased, necessitating a shift to a far larger venue to suit the enthusiastic fan base. Irwindale Speedway has more than enough space to accommodate thousands of spectators and hundreds of cars, which was precisely what Sevenstock needed to celebrate its historic 25th anniversary.

The day was jam-packed with events thanks to a well-planned schedule that featured scheduled car roll-in times, a greeting ceremony, a Mazda factory demo, a showcase for the Vintage Japanese Motor Union, an annual raffle, and a parade lap around the circuit. There were lots of food vendors and activities to look at in between those experiences.

It’s an interesting time to be around since big, established events like Sevenstock, Socal Euro, The Honda Meet, Auto Fashion Festival, and a few others are approaching their 20th or 25th anniversary and attendance from fans is still high, proving again how committed Socal fans are.

Don’t panic—that wasn’t an LS swap scuttling into a rotary celebration. This extended FD RX-7 has a four rotor exchange located under the hood, directly behind two turbos, along with a Savanna front end conversion.

With its bold wheel and tire combination, matching flares, and striking color, this RX3 has a great appearance.

And when the hood was lifted and its 13B was exposed, there was more to see. The plumbing is kept as short and straight as possible, and the intercooler is precisely positioned within the grill aperture thanks to custom fabrication.

We last saw Kyle Mohan’s FD, outfitted by BN Sports, at SEMA 2017. It seems to have remained unaltered since being brought out to Sevenstock, and it should still have the same dual turbo 13B setup with the half bridge port and CX lower intake manifold.

The final vehicle to carry the Cosmo nameplate was the JC chassis Eunos Cosmo, which came with a twin turbo 13B-RE or the more expensive 20B-REW. It was Mazda’s first production vehicle with a tri-rotor system.

One extremely good FC chassis RX-7 is completed with Super Advan wheels, Ganador mirrors, a vented hood, a low-slung lip, and a squared rear wing, all covered in a thick layer of rich red paint.

The majority of rotary enthusiasts concur that the owner of this RX-8 made the right choice in making this conversion.

This R100 drag vehicle is so well-maintained that it could easily win awards at a car show, but everything about it is businesslike, even down to the lightweight carbon fiber wheels.

This FD is the first vehicle in the United States to sport a full Liberty Walk Super Silhouette widebody conversion, and its front end is replete with Porsche vibes. This year, it made its debut at SEMA at the Toyo Treadpass area.

The LB version goes above and beyond the already outrageous widebody designs available on the market with its massive distinctive fender treatments, boxed back bumper enclosure, and integrated rear wing that joins and contributes to the sides of a quasi-coupe conversion.