Yamaha Alpha

The liquid-cooled 4-stroke 4-valve 125 cc/155 cc version of the Aerox (internally known as the GDR125/GDR155/GPR155) was unveiled at Sepang International Circuit in Malaysia in October 2016. It is powered by a 125 cc (unrelated to the engine used in Indonesian-only Aerox 125 LC) or bored-up 155 cc Blue Core engine equipped with Variable Valve Actuation (VVA) that produces a claimed power output of 8.8 kW (11.8 hp; 12.0 PS) or 11–11.3 kW (14.8–15.2 hp; 15.0–15.4 PS). These engines are shared with the NMAX. It is sold under the Aerox 155 name in Indonesia and Thailand, Mio Aerox 155 in the Philippines, NVX 155 in Malaysia, NVX 125/155 in Vietnam and Aerosports X 155 in China. The Aerox 155 received its first facelift in November 2020 that included connected motorcycle technology. The second facelift Aerox, called Aerox Alpha, was launched in December 2024. The Aerox Alpha features a redesigned model and Yamaha Electronic CVT (YECVT) system marketed as "Turbo" which is shared with the third facelift NMAX. Other than Southeast Asia, the Aerox 155 has also been made available in India since September 2021. The battery electric variant named Aerox E was unveiled in India on 12 November 2025.