14 August. Friday 2026
Kawasaki Ninja ZX-6R - 2021 Specifications and Reviews
The 2021 Kawasaki Ninja ZX-6R is a middleweight sport bike engineered for track-focused riders seeking aggressive performance. Its 636cc inline-four engine delivers 126 horsepower with sharp throttle response and high-rpm capability, making it ideal for competitive racing and canyon carving. The ZX-6R balances accessibility with serious sportbike credentials, suiting riders who want genuine track capability without the extreme commitment of a full superbike.
General information | |
| Price as new | 3.2 Check out the detailed rating of racing track capabilities, engine performance, accident risk, etc. Compare with any other bike. |
| Category | Sport |
| Year | 2021 |
| Model | Kawasaki Ninja ZX-6R |
| | |
Engine and Transmission Specifications | |
| Driveline | Sealed chain |
| Clutch | Wet multi-disc, manual |
| Transmission type | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | Forced lubrication, wet sump with oil cooler |
| Ignition | TCBI with digital advance |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. DFI® with 38mm Keihin throttle bodies (4) and oval sub-throttles |
| Valves per Cylinder | 4 |
| Bore x Stroke | 67.0 x 45.1 mm (2.6 x 1.8 inches) |
| Compression | 12.9:1 |
| Torque | 70.8 Nm (7.2 kgf-m or 52.2 ft.lbs) @ 11000 RPM |
| Power | 126.2 HP (92.1 kW) @ 13500 RPM |
| Engine type | In-line four, four-stroke |
| Capacity: | 636.0 ccm (38.81 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Rear brakes | Single disc. Optional ABS. |
| Diameter | 310 mm (12.2 inches) |
| Front brakes | Double disc. Floating discs. Optional ABS. |
| Rear tire | 180/55-ZR17 |
| Front tire | 120/70-ZR17 |
| Rear wheel travel | 134 mm (5.3 inches) |
| Rear Suspension | Bottom-Link Uni-Trak with gas-charged shock, top-out spring and pillow ball upper mount. Compression damping |
| Front wheel travel | 119 mm (4.7 inches) |
| Front Suspension | 41mm inverted Showa SFF-BP fork with top-out springs, stepless compression and rebound damping, adjustable spring preload |
| Trail | 102 mm (4.0 inches) |
| Rake (fork angle) | 23.5° |
| Frame type | Tubular, diamond frame |
| | |
Physical measures and capacities | |
| Fuel capacity | 17.00 litres (4.49 US gallons) |
| Wheelbase | 1400 mm (55.1 inches) |
| Ground clearance | 130 mm (5.1 inches) |
| Overall width | 710 mm (28.0 inches) |
| Overall length | 2025 mm (79.7 inches) |
| Overall height | 1100 mm (43.3 inches) |
| Seat height | 830 mm (32.7 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 195.0 kg (430.0 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Comments | Small windscreen. Kawasaki Traction Control (KTRC), Power Mode, Optional Kawasaki Intelligent anti-lock Brake System (KIBS). |
| Factory warranty | 12 Month Limited Warranty |
| Starter | Electric |
| Color options | Pearl Nightshade Teal/Metallic Spark Black, Pearl Crystal White/Pearl Storm Gray/Ebony |
Performance Profile & Rider Fit
124 hp
Peak Power
3.3s
0-60 mph
Best For
Track92%
City45%
Cornering93%
Daily Riding40%
Touring30%
Passenger30%
Rider Profile
| Best For | This is a high-revving supersport best suited to riders with prior experience on sportbikes who are comfortable managing an engine that makes its power high in the rev range. |
| Purpose | Built primarily for spirited canyon carving and track days, with razor-sharp handling as its main selling point over outright straight-line power. |
| Rider Fit | The committed riding position, high footpegs, and low bars mean wrists, shoulders, and lower back will feel the strain on longer rides or in heavy traffic. |
| Character | A revvy, precise, and eager middleweight that rewards riders who like to work the gearbox and chase the tach needle through corners. |
| Not Ideal For | Not a good fit for new riders, anyone prioritizing all-day comfort, or those planning to load it up with luggage and a passenger for long-distance touring. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2021 Kawasaki Ninja ZX-6R is a high-performance sports bike that offers a thrilling riding experience. This 636cc machine delivers impressive power and agility, making it a top choice for motorcycle enthusiasts. With advanced technology and sleek, aggressive styling, the ZX-6R is sure to turn heads on the road. Whether you're hitting the track or cruising through city streets, this motorcycle offers a responsive and exhilarating ride. The Kawasaki Ninja ZX-6R 2021 is a powerful and stylish sports bike that delivers a thrilling riding experience. With its 636cc engine and advanced technology, this motorcycle offers impressive power and agility. Whether you're tearing up the track or cruising through the city, the ZX-6R delivers a responsive and exhilarating ride. Its sleek design and aggressive styling make it a top choice for motorcycle enthusiasts looking for a high-performance machine.Add a Comment
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