The QJMotor SRK 421 RR is a performance-focused supersport motorcycle powered by a 421cc inline-four engine. The bike focuses on high-rev performance, premium braking hardware, and track-ready electronics. With a claimed top speed of 210 km/h, the SRK 421 RR targets riders who want a compact yet powerful supersport machine.
Engine and Performance
The QJMotor SRK 421 RR uses a 421cc liquid-cooled, inline-four cylinder engine with a 16-valve DOHC configuration. This high-revving motor produces 76 bhp at 14,000 rpm and 39 Nm of peak torque at 13,000 rpm, delivering strong performance in the higher rev range. The engine pairs with a 6-speed gearbox that provides quick and smooth gear shifts. QJMotor has also equipped the engine with several advanced components to enhance durability and efficiency. These include DLC-treated valve tappets, an electroplated ceramic cylinder, and a forged alloy steel camshaft, which help reduce internal friction and improve performance at high engine speeds. According to the company, the motorcycle can achieve a claimed top speed of 210 km/h.
Suspension and Braking Setup
The SRK 421 RR comes with a fully adjustable suspension system designed for sporty riding.At the front, the motorcycle uses upside-down telescopic forks. At the rear, it gets a multi-link monoshock absorber. Both units are fully adjustable, allowing riders to tune the suspension for road or track conditions.Braking performance is handled by premium Brembo hardware.The front wheel features dual 300 mm disc brakes with radial four-piston Brembo calipers. The rear uses a 240 mm single disc with a two-piston caliper.The braking setup works with dual-channel ABS, improving safety during aggressive braking.
Electronics and Rider Features
The QJMotor SRK 421 RR comes equipped with modern electronics and a connected rider interface. It features a 7-inch TFT display that shows essential riding information and supports a multi-language interface, smartphone connectivity, and navigation mirroring. The motorcycle also offers two riding modes – Normal and Sport. Normal mode provides a balanced throttle response with controlled traction for everyday riding conditions. Sport mode, on the other hand, is designed for aggressive riding and track use. It allows slight rear-wheel slip and controlled wheelies, giving riders a more engaging and dynamic riding experience.
Expected Launch in India
So far, QJMotor has not confirmed plans to launch the SRK 421 RR in India. However, the motorcycle could attract strong interest if introduced, especially among riders looking for an affordable inline-four supersport bike.