Sportbikes

2026Kawasaki Ninja ZX 4RR Performance

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The 2026 Kawasaki Ninja ZX 4RR Performance is a small-capacity sportbike built for riders who love to chase revs, with a screaming in-line four that makes its 76.4 hp at 14,500 rpm. Adjustable Showa suspension and a two-way quickshifter give it genuine track credentials in a lightweight, road-friendly package. It's best known for bringing big-bike four-cylinder character to the 400 class.

Capacity: 399.0 ccm
Engine: In-line four, four-stroke
Gearbox: 6-speed
Dry weight: 174.0 kg
Seat height: 800 mm
Power: 76.4 HP (57.0 kW) @ 14500 RPM

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What’s new for the 2026 Kawasaki Ninja ZX 4RR Performance

vs the 2025

Spec	2025	2026
Dry weight	166.0 kg (366.0 pounds)	174.0 kg (383.6 pounds)

Other years 2025 2026

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering92%

City riding45%

Daily riding40%

Touring30%

Two-up25%

Track90%

Best for: Built primarily for spirited canyon carving and track days, with its screaming inline-four rewarding riders who explore the upper rev range.
Built for: A rev-happy, high-revving inline-four sportbike that thrives on high RPM excitement rather than low-end torque, delivering a thrilling, engaging ride when pushed hard.
Not ideal for: Not a good fit for riders seeking a relaxed commuter, long-distance tourer, or anyone wanting strong low-speed torque without working the gearbox.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 800mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2026 Kawasaki Ninja ZX 4RR Performance, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine

Capacity: 399.0 ccm
Power: 76.4 HP (57.0 kW) @ 14500 RPM
Torque: 39.0 Nm (4.0 kgf-m) @ 13000 RPM
Engine type: In-line four, four-stroke
Power/weight ratio: 0.4391 HP/kg (dry)
Bore x stroke: 57.0 x 39.1 mm
Compression: 12.3:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Ignition: Digital
Valves per cylinder: 4

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Assist and Slipper Clutch

Performance

0-60 mph: 4.20 seconds
0-100 km/h (0-62 mph): 4.60 seconds

Dimensions & weight

Wheelbase: 1379 mm
Overall length: 1989 mm
Overall width: 765 mm
Overall height: 1110 mm
Seat height: 800 mm
Dry weight: 174.0 kg
Wet weight: 188.0 kg
Fuel capacity: 15.10 litres
Ground clearance: 135 mm

Chassis & suspension

Frame: Trellis, high-tensile steel
Front suspension: 37mm inverted fork with SFF-BP internals and spring preload adjustability
Rear suspension: Horizontal Back-link, BFRC lite gas charged shock w/ piggyback reservoir, adjustable compression, rebound and spring preload
Front wheel travel: 119 mm
Rear wheel travel: 124 mm
Rake (fork angle): 23.5°
Trail: 97 mm

Brakes & wheels

Front brakes: Double disc. ABS.
Front brakes diameter: 290 mm
Rear brakes: Single disc. ABS.
Rear brakes diameter: 220 mm
ABS: Yes
Front tyre: 120/70-17
Rear tyre: 160/60-17

Other

Color options: Lime Green/Ebony/Pearl Blizzard White
Comments: Kawasaki spec: 57.0 kW (77 PS) at 14,500 rpm; 58.7 kW (80 PS) with RAM air. RR adds preload-adjustable fork, Showa BFRC lite rear shock (as on ZX-10R) and two-way quick shifter (KQS).

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.