Mazda unveiled two of its MX-5 concept cars for this year's SEMA in Las Vegas. The first one was already seen last year but with obvious enhancements.

The Mazda MX-5 Miata Speedster concept was seen sporting an ether paint. This is a testament that Mazda engineers are dedicated to making lightweight speedsters. It was even less than 2,000 lbs.

The white ether painted Speedster comes without a wind-shield. This confirms that the car wasn't even meant for actual production. Windshields are a must-have for safety purposes.

It also features an adjustable suspension. The Mazda MX-5 Miata Speedster is also equipped with a BFGood rich g-Force Rival R1 grooved racing slicks, CNET reported.

The designers slashed the underneath part of the dashboard. In place of the former, a large digital display was put in it. The Brembo front brakes sports lighter rotors and calipers. The battery stock was replaced with a Braille GreenLite G20 Lithium battery. The battery weighs only 4.5 lbs or 2 kg.

Not to be forgotten is the Mazda MX-5 RF Kuro. Kuro is a Japanese word which means charcoal. It is on its SEMA debut. The concept car is based on the 2017 MX-5 RF retractable concept, which will be available next year, according to Auto Guide.

The Kuro comes with an OpenFlash Performance center exit exhaust. Like its brother the speedster, it also sports BFGoodrich Rival G-force tires with a satin black metallic finish.

Ken Saward, Mazda's design manager for the concept car, said: "We wanted to give MX-5 RF Kuro a stealth look. He further added, "to complement its sleek profile, providing subtlety and purpose," according to Car Scoops.

These concept cars affirm Mazda's dedication to their longstanding motorsports heritage. The Japanese automaker barely if not never disappoints. However, it is too bad that these cars will surely remain a concept.

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