Kawasaki Lightweight supersport
Ninja ZX-4RR specs
Current and prior-year spec data for the Kawasaki Ninja ZX-4RR, including trims, colors, chassis numbers, electronics, and source links.
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Model note
Kawasaki Ninja ZX-4RR
The screaming 399cc inline-FOUR Kawasaki shocked everyone with in 2023 — 16,000 rpm redline, full supersport chassis at a quarter-liter price point.
Model-year table
Side-by-side specs
Specs are normalized into shared fields so different brands can be compared without losing the source trail.
2026
Kawasaki Ninja ZX-4RR
Base / KRT Edition
$10,499 MSRP
Lime Green/Ebony
Metallic Spark Black
- Engine
- 399cc liquid-cooled DOHC inline-four
- Bore Stroke
- 57.0 x 39.1 mm
- Compression
- 12.3:1
- Fuel System
- Fuel injection
- Transmission
- 6-speed with assist-and-slipper clutch and quickshifter
- Final Drive
- Chain
- Front Suspension
- 37 mm Showa SFF-BP inverted fork
- Rear Suspension
- Showa BFRC-lite single shock, adjustable preload
- Front Brakes
- Dual 290 mm semi-floating petal discs with 4-piston calipers and ABS
- Rear Brakes
- 220 mm petal disc with ABS
- Tires
- 120/70ZR17 front, 160/60ZR17 rear
- Wheelbase
- 54.3 in
- Seat Height
- 31.5 in
- Curb Weight
- 414 lb
- Fuel Capacity
- 4.0 gal
Electronics
KTRC Power modes Quick shifter
2025
Kawasaki Ninja ZX-4RR
Base / KRT Edition
$10,299 MSRP
Lime Green/Ebony
Metallic Spark Black
- Engine
- 399cc liquid-cooled DOHC inline-four
- Bore Stroke
- 57.0 x 39.1 mm
- Compression
- 12.3:1
- Fuel System
- Fuel injection
- Transmission
- 6-speed with assist-and-slipper clutch and quickshifter
- Final Drive
- Chain
- Front Suspension
- 37 mm Showa SFF-BP inverted fork
- Rear Suspension
- Showa BFRC-lite single shock, adjustable preload
- Front Brakes
- Dual 290 mm semi-floating petal discs with 4-piston calipers and ABS
- Rear Brakes
- 220 mm petal disc with ABS
- Tires
- 120/70ZR17 front, 160/60ZR17 rear
- Wheelbase
- 54.3 in
- Seat Height
- 31.5 in
- Curb Weight
- 414 lb
- Fuel Capacity
- 4.0 gal
Electronics
KTRC Power modes Quick shifter
2024
Kawasaki Ninja ZX-4RR
Base / KRT Edition
$9,999 MSRP
Lime Green/Ebony
Metallic Spark Black
- Engine
- 399cc liquid-cooled DOHC inline-four
- Bore Stroke
- 57.0 x 39.1 mm
- Compression
- 12.3:1
- Fuel System
- Fuel injection
- Transmission
- 6-speed with assist-and-slipper clutch and quickshifter
- Final Drive
- Chain
- Front Suspension
- 37 mm Showa SFF-BP inverted fork
- Rear Suspension
- Showa BFRC-lite single shock, adjustable preload
- Front Brakes
- Dual 290 mm semi-floating petal discs with 4-piston calipers and ABS
- Rear Brakes
- 220 mm petal disc with ABS
- Tires
- 120/70ZR17 front, 160/60ZR17 rear
- Wheelbase
- 54.3 in
- Seat Height
- 31.5 in
- Curb Weight
- 414 lb
- Fuel Capacity
- 4.0 gal
Electronics
KTRC Power modes Quick shifter
2023
Kawasaki Ninja ZX-4RR
Base / KRT Edition
$9,699 MSRP
Lime Green/Ebony
Metallic Spark Black
- Engine
- 399cc liquid-cooled DOHC inline-four (launch year)
- Bore Stroke
- 57.0 x 39.1 mm
- Compression
- 12.3:1
- Fuel System
- Fuel injection
- Transmission
- 6-speed with assist-and-slipper clutch and quickshifter
- Final Drive
- Chain
- Front Suspension
- 37 mm Showa SFF-BP inverted fork
- Rear Suspension
- Showa BFRC-lite single shock, adjustable preload
- Front Brakes
- Dual 290 mm semi-floating petal discs with 4-piston calipers and ABS
- Rear Brakes
- 220 mm petal disc with ABS
- Tires
- 120/70ZR17 front, 160/60ZR17 rear
- Wheelbase
- 54.3 in
- Seat Height
- 31.5 in
- Curb Weight
- 414 lb
- Fuel Capacity
- 4.0 gal
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