QJ Motor SRK 421 RR

A distinctive strength of the QJ Motor SRK 421 RR is its 421cc inline-four engine, which is tuned for a very high-revving performance character rather than low-end torque, making it appealing to riders who want a supersport-style feel in a smaller-capacity package. It pairs that motor with a 6-speed gearbox, chain drive, and ABS-equipped Brembo brakes with twin 300 mm front discs and a 240 mm rear disc, which supports its sporty positioning.

The SRK 421 RR is also shaped around everyday usability for a sportbike, with a 795 mm seat height, 16.5-litre fuel tank, and a claimed 185 kg kerb weight, so it is easier to place in the garage and manage at low speeds than larger inline-four supersports. Its chassis package includes a trellis-style steel/aluminium frame, fully adjustable Marzocchi USD fork and rear monoshock, and 17-inch wheels with 120/70 front and 160/60 rear tyres, which points to a setup aimed at balanced road use and enthusiastic riding.

For buyers comparing spec sheets, the SRK 421 RR stands out because it combines a compact middleweight body with hardware typically seen on pricier sportbikes, including Brembo radial front calipers, a liquid-cooled DOHC four-cylinder, and an indicated top-speed claim around 210–220 km/h in published material. In India, that makes it most relevant for riders who want a premium-feeling faired sportbike experience and are comfortable trading relaxed city manners for stronger top-end performance and a firmer, more committed riding posture.

A sharp-value small four-cylinder sportbike that stands out for its high-revving character and everyday usability, the SRK 421 RR is best judged as an affordable alternative to much pricier rivals rather than a pure track weapon. It makes its appeal through the unusual 421cc inline-four layout, strong top-end performance, and a riding experience aimed at riders who want supersport flavour without the premium badge tax.

This is the better pick if your priority is engine character and specification for the money, because the SRK 421 RR delivers genuine four-cylinder excitement at a price well below the obvious benchmark in this class. The trade-off is that it is not expected to feel as polished or razor-sharp as the more established Japanese rival, so buyers should value its performance-per-rupee proposition more than brand prestige.

Choose the SRK 421 RR if you want a compact sportbike that looks the part, revs hard, and makes sense as a road-focused buy with occasional sporty use. It suits riders who are drawn to the novelty of a small inline-four and want a machine that is more accessible and easier to justify financially than a higher-priced supersport, even if the overall finish and dynamic finesse are a step behind the class leader.

A notable update for the QJ Motor SRK 421 RR is its 421cc inline-four engine, which is tuned for very high-rpm performance and is paired with a 6-speed gearbox, making it one of the few four-cylinder options in this segment. Its claimed output is around 77.5–78 hp and 39 Nm, so buyers looking for a rev-happy supersport-style character rather than low-end torque should focus on this model.

The SRK 421 RR also stands out for its premium chassis and braking package, with a trellis-style steel/aluminium frame, fully adjustable USD front fork and rear monoshock, and Brembo brakes with twin 300 mm front discs plus a 240 mm rear disc and ABS. For buyers comparing hardware, this specification suggests a strong emphasis on track-style feel and braking performance.

A practical update relevant to India buyers is the bike’s size and usability package: it has a 16.5-litre fuel tank, a claimed kerb weight of about 185 kg, a 795 mm seat height, and 17-inch wheels with 120/70 front and 160/60 rear tyres. That combination points to a large-feeling middleweight sportbike that should be judged on rider fit, weight, and running costs as much as on outright performance.

A likely India buying-price benchmark for the QJ Motor SRK 421 RR is its overseas launch price of GBP 5,299, which was widely reported as roughly ₹6.49 lakh; that figure is useful for setting expectations, but it is not an official India ex-showroom price.

A second useful price angle is the bike’s value positioning: overseas reports say the SRK 421 RR undercuts the Kawasaki Ninja ZX-4RR by about GBP 3,500 in Europe, so buyers can view it as a more affordable four-cylinder supersport alternative if it reaches India at a similar gap.

A third practical update is that recent listings and videos have described the SRK 421 RR as priced from GBP 5,299 plus about GBP 200 on-road charges, which indicates the real purchase outlay is higher than the headline price and could help Indian buyers estimate landed cost more realistically if the model is imported or locally priced similarly.

The QJ Motor SRK 421 RR does not have a reliable official mileage figure publicly disclosed for India, so a buying decision should focus on its 421cc inline-four performance character and the likelihood of higher fuel use than a twin-cylinder sportbike of similar size.

Fuel efficiency will depend heavily on how the bike is used: in aggressive riding or track-style conditions, the high-revving 78hp engine and 13,000rpm torque peak suggest mileage will be modest, while gentle commuting should be the best-case scenario for this class.

Because the model is not yet established in India and there is no verified Indian road-test mileage data in the available information, treat any claimed kmpl figure as provisional until an India-spec test or owner-reported average becomes available.