QJMotor SRK 421 RR
Accessible, Affordable, Performance
Why the SRK 421 RR
10 highlights
POWERFUL 16V DOHC ENGINE
The SRK 421 RR is powered by a screaming 421cc inline 4-cylinder engine that is entirely designed by QJMOTOR. It has a DOHC 16-valve over square architecture thanks to a bore of 57 mm and a stroke of 41.2 mm, it delivers an impressive power output of 77 Bhp at 14,000rpm and a maximum torque of 39 Nm offering exceptional performance from such a small capacity multi cylinder engine.
BREMBO BRAKES and BOSCH ABS
The front brakes feature Brembo 4 piston radial calipers paired with dual 300mm discs (with Bosch Dual channel ABS), delivering exceptional stopping power. At the rear, a single Brembo 2 piston caliper and a 240mm disc (with Bosch Dual Channel ABS) ensure progressive and safe braking
LARGE FUEL TANK
The QJMOTOR SRK 421 RR has a sculpted, curvaceous 16L tank, this ensures you can ride harder for longer.
SPORTY YET COMFORTABLE
The SRK 421 RR has style and comfort combined. The riders seat is sculpted and has a none slip cover, with a narrow step over and a seat height of only 808mm the machine is easy to maneuver.
FULL LED LIGHTING
The SRK 421 RR has stylish LED headlights, tail lights and indicators as standard. The LED lighting system guarantees exceptional visibility and increased safety day & night.
FULL COLOUR 5" TFT DASHBOARD
The dashboard is equipped with a modern and intuitive Full Colour 5-inch TFT screen offering a wealth of essential information.
MARZOCCHI SUSPENSION
The QJMOTOR SRK 421 RR has adjustable Marzocchi USD front forks and a rear mono-shock that gives extreme poise and control on road or track.
RIDER AIDS
The SRK 421 RR is loaded with technology usually only found on bigger capacity machines. Switchable Rider Modes, TCS Traction Control, TPMS Tyre Pressure and Temperature Monitoring are all fitted as standard.
STYLISH DETAILS
The SRK 421 RR abounds with style - Diamond cut lightweight multi spoke alloy wheels, bold yet simple colours, aggressive angular bodywork, with aerodynamic winglets, LED lighting provides a distinctive visual signature, mass centralised 4-1 sports exhaust.
C-CREATIVE DESIGN
The SRK 421 RR ushers in a new era of QJMOTOR's signature design, inspired by the aesthetics of "mecha" - sharp lines, an aggressive silhouette and robotic-looking optics. It was created in collaboration with the Italian studio C-CREATIVE and renowned motorcycle designer Adrian Morton. The unique, expressive fairings emphasize a strong brand identity that will guide the development of future QJMOTOR motorcycles. The model features clean lines and minimalist graphics, embodying the company's new philosophy of innovation, technology, and elegance. Every element is meticulously crafted and seamlessly integrates into the overall concept.
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About the SRK 421 RR
High-revving four-cylinder soul, premium Italian hardware and mecha-styling
• High-revving 421cc inline four-cylinder engine with 77Bhp and 39Nm of torque • Original futuristic "Mecha" styling with aerodynamic winglets and ram-air intake • Advanced rider interface: 7-inch TFT display, smartphone connectivity, and TPMS • High-specification 176kg chassis with Brembo brakes, adjustable suspension
The QJMOTOR SRK 421 RR has officially arrived to shake up the mid-weight SuperSport category, blending aerodynamic engineering with high-speed styling. The SRK 421 RR fuses a screaming four-cylinder soundtrack with precision control to deliver an unprecedented thrill for those chasing the ultimate ride.
The heart of the SRK 421 RR is a 421cc inline four-cylinder, 16v DOHC engine producing 77Bhp (57kW) at 14,000rpm. Designed for linear and smooth power delivery, the engine is beginner-friendly while offering high-rev thrills for track-inspired performance. A peak torque of 39Nm is delivered at 13,000rpm, but still produces enough low-end urgency to ensure responsive delivery on city streets.
The engine also features DLC-treated valve tappets, an electroplated ceramic cylinder and a forged alloy steel camshaft. High-end components are also used from famed Japanese companies, including FCC paper-based clutch plates, NTN bearings, RIK piston rings, and Daido crankshaft bearings. The SRK 421 RR has been crafted by the designers of some of the most acclaimed motorcycles and features original mecha-inspired styling that creates a futuristic presence. Its aerodynamic bodywork includes bold lines, geometric cuts, and a hollowed tail section that channels airflow to reduce drag. The aggressive front face is equipped with a Ram Air intake to ensure efficient combustion and enhanced power output at speed.
Other distinctive styling touches include a three-dimensional floating taillight and a race-ready rider triangle created by lowered handlebars and raised footpegs. The 16-litre fuel tank is sculpted for ergonomic support, while the 808mm seat height ensures accessibility for a wide range of riders.
The steel-aluminium composite braided frame provides high-strength rigidity and has an even balanced weight distribution for handling agility. This is paired with fully adjustable upside-down telescopic forks and a rear multi-link shock absorber from Marzocchi. Premium stopping power is provided by Brembo radial four-piston calipers acting on 300mm dual front discs and a 240mm single rear disc, supported by a dual-channel ABS system.
The rider interface is headlined by a 7-inch TFT display featuring a multi-language menu, smartphone connectivity, and navigation mirroring. Riders can toggle between Normal and Sport modes to adapt throttle response and the level of intervention from the Traction Control System (TCS) and ABS. Sport is designed for track use, allowing slight rear wheel slip and wheelies.
Additional premium features include a Tyre Pressure Monitoring System (TPMS), an 18W dual-port USB (A&C) fast charger, and optional front and rear integrated cameras.
QJMOTOR - Always Forward
Specification
Engine
Chassis
Dimensions
On the road price
OTR payment requiredPrice breakdown
The OTR price ensures you have everything needed to ride the bike away from the dealership legally, excluding insurance. *OTR charges may vary depending on the dealer’s geographic location and associated setup costs
- Pre registered vehicles road fund licence as already been deducted from the OTR.