High-revving four cylinder soul, premium Italian hardware and Mecha-styling
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 77.6ps (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 evenly-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 two-piston caliper operating 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.
The QJMOTOR SRK 421 RR costs £5,299 (plus on the road charges)
and is available in three colour options: Black, White or Red/Silver.
For more information and to find your nearest dealer, visit qjmotor.co.uk
