SSR Wheel

SSR Wheels: Race-Born Japanese Engineering Since 1971

SSR (Speed Star Racing) occupies a truly unique place in the world of aftermarket wheels. Founded in 1971, SSR is a legendary Japanese wheel manufacturer known for producing high-performance, lightweight wheels engineered for motorsports and street use. What separates SSR from the crowd isn't just heritage — it's a string of documented firsts that changed how the world thinks about wheel design.

Pioneering Three-Piece Wheel Technology

The real geniuses behind the first three-piece wheel were at SSR when they made the MK-I in 1971 — this is the first documented 3-piece wheel. That single invention helped define an entirely new category of wheel construction that nearly every premium brand would eventually adopt. SSR's 3-piece wheels are made up of an outer rim, inner rim, and a face, with each piece crafted from a slightly different alloy of aluminum to ensure a specific distribution of strength and lightness throughout the wheel.

Proprietary Manufacturing Technologies

SSR doesn't rely on a single manufacturing process — instead, they deploy a suite of proprietary technologies matched to each wheel construction type:

• Semi-Solid Forging (SSF): SSR was the first and only alloy wheel manufacturer at the time to utilize the semi-solid forging (SSF) process in 1991, a process which the company later patented. In this process, metal is injected into a mold before it solidifies and tons of pressure are applied from the top, giving the wheel a consistent and favorable grain structure, much the same as forging.
• Heat Treatment Manufacture (HTM): Wheels go through two heat treatments to increase strength while decreasing their weight, resulting in a lightweight wheel construction that's ultra-strong and durable.
• Flow Forming Technology (FFT-R): SSR developed the advanced flow forming technology FFT-R, which involves deeply calculated and precision-thinned inner rim construction. This technology is featured prominently in the popular GTX line.
• Hybrid 2-Piece Construction: In 2002, SSR invented a two-piece hybrid wheel using both semi-solid forging and heat treatment technologies, combining the best of both worlds into a single wheel.

Product Lines Built for Every Enthusiast

SSR wheels are available in four separate configurations: 1-piece, 2-piece, 2-piece Hybrid, and 3-piece wheels. Their current lineup spans several distinct families:

• GTX Series: The GTX line employs flow-forming technology to enhance barrel durability without adding excess mass. Models like the GTX01, GTX02, GTX03, and GTX04 bring clean, modern Japanese styling to a wide range of fitments.
• GTV Series: The GTV series uses proprietary forging techniques for increased strength-to-weight ratios, making them ideal for circuit use.
• Professor Series: The Professor lineup — including the SP1, SP3, MS1, MS3, and more — represents sport-inspired 3-piece wheels celebrated for their fitment flexibility and premium aluminum alloys.
• Executor Series: The Executor line, still largely in production, is designed with big diameters and floating, concave spokes, making it a staple of VIP and luxury builds.
• Formula & Speed Star (MK Series): These are OG wheels still available new today — the MK-I, MK-II, and MK-III are available in small diameters as compact as 10 inches, beloved for their classic motorsport aesthetic.

Certified Quality, Proven on Track

SSR has been a wheel supplier to factory race teams of Honda, Toyota, and Nissan, and has competed in racing series such as Super GT, the Japanese Touring Car Championship (JTCC), and Formula Nippon. Every design decision traces back to real-world track data.

SSR wheels are always put through JWL testing before they are used on the street or track, and both the JWL and VIA logos are embossed into each and every SSR wheel, representing the brand's dedication to quality control. Their aftermarket wheels are popular with owners of sport compact and import cars on the race and show circuits.

Whether you're building a time-attack machine, a show-quality VIP sedan, or an aggressive daily driver, explore the full range of wheels available from SSR — and choose a brand whose innovations have shaped the entire industry for over five decades.