Sportbikes

2025Kawasaki Ninja ZX-6R

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The 2025 Kawasaki Ninja ZX-6R is a middleweight sport bike engineered for riders seeking track-focused performance and aggressive styling. Its 636cc inline-four engine delivers 122 horsepower with a responsive power band optimized for aggressive acceleration and high-RPM capability. Known for its sharp handling, lightweight chassis, and precision engineering, the ZX-6R excels on both road and track for experienced sport riders. A factory ABS option was also available.

Capacity: 636.0 ccm
Engine: In-line four, four-stroke
Gearbox: 6-speed
Dry weight: 191.1 kg
Seat height: 830 mm
Power: 122.0 HP (89.1 kW) @ 13000 RPM

⇄ Compare with another bike ＋ Add to garage All model years ⚠ Recalls listed (2)

What’s new for the 2025 Kawasaki Ninja ZX-6R

vs the 2024

Spec	2024	2025
Power	122.0 HP (91.0 kW) @ 13000 RPM	122.0 HP (89.1 kW) @ 13000 RPM
Torque	70.6 Nm (7.2 kgf-m or 52.1 ft.lbs) @ 10800 RPM	71.0 Nm (7.2 kgf-m or 52.4 ft.lbs) @ 11500 RPM
Wet weight	198.0 kg (436.5 pounds)	194.0 kg (427.7 pounds)
Front suspension	41 mm inverted Showa Big Piston Front fork with top-out springs, stepless compression and rebound damping, fully-adjustable spring preload / 4.7 in.	41mm inverted Showa SFF-BP fork with top-out springs, stepless compression and rebound damping, adjustable spring preload
Rear suspension	Bottom-Link Uni-Trak® with gas-charged shock, top-out spring and pillow ball upper mount, dual-range (high/low-speed) stepless compression damping, 25-way adjustable rebound damping, fully-adjustable spring preload / 5.2 in.	Bottom-Link Uni-Trak with gas-charged shock, top-out spring and pillow ball upper mount. Compression damping
Front brakes	Double disc	Double disc. Floating discs. Nissin 4-piston, monobloc calipers. Optional ABS.
Rear brakes	Single disc	Single disc. Single-piston caliper. Optional ABS.
Compression	13.3:1	12.9:1

Other years 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering93%

City riding45%

Daily riding40%

Touring30%

Two-up30%

Track92%

Best for: Built primarily for spirited canyon carving and track days, with razor-sharp handling as its main selling point over outright straight-line power.
Built for: 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.

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 830mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with balls of both feet on the 2025 Kawasaki Ninja ZX-6R, with a cramped knee angle of around 75 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 821-900 mm — Long Legs →

Find bikes that fit your height →

Range and running costs

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Units

Currency

Fuel per litre

Riding a year

Based on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.

Full specifications

Engine

Capacity: 636.0 ccm
Power: 122.0 HP (89.1 kW) @ 13000 RPM
CO2 Emissions: 136 CO2 g/km
EPA Certificate No.: SKAXC.636AAF-010
EPA Est. Fuel Consumption: 5.79 L/100km (40.6 US mpg)
EPA CO Emissions: 1.0 CO g/km
Torque: 71.0 Nm (7.2 kgf-m) @ 11500 RPM
Engine type: In-line four, four-stroke
Fuel consumption: 6.20 litres/100 km (16.1 km/l)
Power/weight ratio: 0.6384 HP/kg (dry)
Bore x stroke: 67.0 x 45.1 mm
Compression: 12.9:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Ignition: TCBI with digital advance
Aspiration: Naturally aspirated
Valves per cylinder: 4
Lubrication system: Forced lubrication, wet sump with oil cooler

Transmission

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

Dimensions & weight

Wheelbase: 1400 mm
Overall length: 2025 mm
Overall width: 710 mm
Overall height: 1105 mm
Seat height: 830 mm
Dry weight: 191.1 kg
Wet weight: 194.0 kg
Fuel capacity: 17.00 litres
Ground clearance: 130 mm

Chassis & suspension

Frame: Twin spar, pressed-aluminium
Front suspension: 41mm inverted Showa SFF-BP fork with top-out springs, stepless compression and rebound damping, adjustable spring preload
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
Rear wheel travel: 134 mm
Rake (fork angle): 23.5°
Trail: 102 mm

Brakes & wheels

Front brakes: Double disc. Floating discs. Nissin 4-piston, monobloc calipers. Optional ABS.
Front brakes diameter: 300 mm
Rear brakes: Single disc. Single-piston caliper. Optional ABS.
Rear brakes diameter: 220 mm
ABS: Optional
Front tyre: 120/70-ZR17
Rear tyre: 180/55-ZR17

Other

Color options: Lime Green/Ebony/Pearl Blizzard White Ebony/Metallic Flat Spark Black Ebony/Metallic Flat Spark Black
Comments: Maximum power with RAM Air 101 kW /137 HP at 13,500 rpm.
Fuel Tank Material: Metal

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

What changed, year to year

Differences highlighted

Specification	2004	2010	2016	2021	2025	2027
Capacity	636 cc	599 cc	636 cc	636 cc	636 cc	636 cc
Dry weight	161 kg	—	191 kg	191 kg	191 kg	—
Seat height	825 mm	815 mm	831 mm	830 mm	830 mm	830 mm
Fuel capacity	—	17 L	17 L	17 L	17 L	17 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Safety Recalls

⚠ 2 recalls may apply

ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICALNov 2025 · 25V798000

Kawasaki Motors Corp., U.S.A. (Kawasaki) is recalling certain 2024-2026 Ninja ZX-6R, ZX-6R KRT Edition, ZX-6R KRT 40th Anniversary Edition ABS, ZX-6R ABS, and ZX-6R KRT Edition ABS motorcycles. The motorcycles may lose engine power during operation due to seizure of a metal crankshaft bushing.

Risk: An engine stall increases the risk of a crash.

Remedy: Owners are advised not to ride their motorcycles until the repair has been completed. Dealers will re-tighten the metal crankshaft bushing, free of charge. Owner notification letters were mailed December 15, 2025. Motorcycles in this recall that were previously repaired under recall 25V376 will need to have the new remedy performed, once available. Owners may contact Kawasaki customer service at (855) 878-4217.

ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICALJul 2025 · 25V376000

Kawasaki Motors Corp., U.S.A. (Kawasaki) is recalling certain 2024-2025 Ninja ZX-6R motorcycles. The motorcycles may lose engine power during operation due to seizure of a metal crankshaft bushing.

Risk: An engine stall increases the risk of a crash.

Remedy: Owners are advised not to ride their motorcycles until the repair has been completed. The #5 metal crankshaft bushing must be inspected on all eligible units already in operation. If there is no abnormality with or damage to the bushing, the bolts holding the crankshaft together in the crank case must be re-tightened with proper torque. If there is any abnormality with or damage to the bushing, the parts must be replaced and the crankshaft properly tightened, or the engine must be otherwise repaired or replaced. The manufacturer has not yet provided a schedule for recall notification. Owners may contact KMC customer service at 1-866-802-9381. This recall was replaced by 25V798.

These recalls cover some 2025 bikes of this model. Whether one applies to a specific bike, and whether the repair has already been done, depends on its VIN — check your VIN with NHTSA or ask a dealer.

Source: NHTSA. View all Kawasaki recalls →