Mazda has arrived at this year's Specialty Equipment Market Association (SEMA) Show with two MX-5 concepts. Set to highlight the lightweight engineering of the fourth-generation roadster, the two concepts feature a vintage exterior design that is both functional and appealing to the eye, according to the company.

“Both MX-5 Spyder and MX-5 Speedster are uncompromising designs that highlight the core strengths of MX-5. The all-new 2016 MX-5 served as a blank canvas for our design team to create some truly one-of-a-kind cars, yet our SEMA concepts remain true to more than 25 years of MX-5 heritage,” said Ken Saward, Design Manager, Mazda North American Operations.

Beginning with the Speedster finished in Blue Ether, Mazda described the concept as a return to the essential 'wind-in-the-hair' driving experience. The windshield has been replaced with a wind deflector and is reminiscent of open-top race cars of the old days. Rounding off the exterior revisions are the 16-inch RAYS Extreme Gram Lights wheels, 225/50/R16 Kumho Ecsta tires and a center mounted exhaust from Racing Beat.

Rear quarter view of the Mazda MX-5 Speedster concept

Inside, it has bespoke lightweight Mu-Len Delta seats constructed from carbon fiber and upholstered in Alcantra and doors that are also made from the lightweight composite.

Other modifications installed on the car include: adjustable K&W coil-over suspension and front Brembo four-piston brake calipers with vented discs. Ultimately, the concept only weighs 943kg, 113kg less than standard models.

Front quarter view of the Mazda Spyder MX-5 concept

Over to the Spyder finished in Mercury Silver, Mazda stated that it's their take on a classic vintage roadster. Its key feature is the bikini top that was developed by American Sunroof Corporation. Its fabric, however, was supplied by Haartz.

It also has a carbon fiber aero kit, grill intake, and body toneau cover. It rides on custom 17-inch Yokohama Advan RS II wheels wrapped in 225/45/R17 Advan A048 tires.

The interior, on the other hand, is upholstered in 'Prima' natural leather by Spinneybeck.

Rear quarter view of the Mazda Spyder MX-5 concept

Much like the Speedster, it also has adjustable coil-over suspension and front Brembo four-piston brake calipers with vented discs.

Both concepts are powered by the 2.0-liter SkyActiv-G engine that puts out 160 PS at 6,000 rpm and 200 Nm of torque at 4,600 rpm.