NINJA ZX-4RR
399cc screamer revving to 15,000 rpm. Pocket rocket reborn.
LIGHTWEIGHT SPORT 2026
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Lime Green
Power
77 HP
Torque
27 lb-ft
Engine
399cc I4
MSRP
$9,999
Trans
6-Speed
Seat
31.5 in
0–60 mph
5.0s
0–100 mph
13.0s
¼ Mile
13.6s
01 · TAIL TIDY / FENDER ELIMINATOR
Major visual upgrade. Several boutique brands make ZX-4RR-specific kits.
fender
Evotech Performance
ZX-4RR Tail Tidy verify year
$200-240
UK-made aircraft-aluminum tail tidy. CNC-machined, plug-and-play, LED plate light included.
fender
New Rage Cycles
ZX-4RR Fender Eliminator check fit
$160-200
US boutique. Plug-and-play wiring + integrated plate light.
fender
R&G Racing
ZX-4RR Tail Tidy check fit
$140-180
UK gold standard for tail tidies. Black powder coat.
fender
Graves Motorsports
Fender Eliminator Kit 2023-2026 Ninja ZX-4R / ZX-4RR
$159.95
Compact license-plate relocation kit that removes the bulky factory rear fender.
02 · INTEGRATED TAILLIGHT
Cleans up the rear by integrating turn signals into the brake light.
taillight
Custom LED
Blaster-X Integrated check fit
$180-240
Microprocessor-based with Brake Alert, Turn Alert, Strobe Mode. Plug-and-play.
taillight
Motodynamic
Integrated Tail Light check fit
$120-160
Plug-and-play, smoked lens, sleek profile.
taillight
TST Industries
Programmable and Sequential LED Integrated Tail Light 2023-2026 Ninja ZX-4RR
$141.99
Programmable LED taillight combining running, brake, and sequential turn-signal functions.
03 · EXHAUST
The biggest sound + weight + power upgrade. All four major brands make ZX-4RR systems.
exhaust
Akrapovič
Evolution Line Titanium (ZX-4RR) link pending
$1800-2500
Full titanium system, carbon end cap. Significant weight reduction + power gain. The flagship option.
exhaust
SC-Project
SC1-R / S1 Full Exhaust verify year
$1400-1900
Italian, handmade alongside MotoGP exhausts. SBK race-proven sound.
exhaust
Yoshimura
ZX-4RR Slip-On verify year
$500-1100
Slip-on alternative. More affordable, real weight + sound benefit.
exhaust
Arrow
Pro-Race / Indy-Race link pending
$380-1400
Italian, more affordable than Akra/SC. Multiple silencer options.
exhaust
Hindle
2023-2026 Kawasaki ZX-4R/RR Stainless Full System 2023-2026 Ninja ZX-4R / ZX-4RR
$1,151.90
Stainless-steel full exhaust system with model-specific headers, mid-pipe, and silencer.
04 · WINGLETS / AERO
Aftermarket winglets / aero options for this bike.
winglet
Sixty61
ZX4RR-Wing-Mirrors Aerodynamic Mirror Pair 2023–2026
$195.00
CNC-machined aluminum mirror pair rotates between mirror and winglet positions using the original mounting points.
✓ Fits 2023–2026
Backorder accepted.
05 · LED TURN SIGNALS (FRONT)
Stealth flush-mounts (TST) or premium small stalks (Rizoma Vision).
06 · ECU TUNE
Unlocks meaningful power on ZX-4RR. 2WDW + Woolich are the two universal options.
chip
2 Wheel DynoWorks
Mail-In ECU Flash verify model
$300-400
Ship them your ECU, they flash dyno-developed map. Free future updates.
chip
Woolich Racing
ZX-4RR ECU Flashing verify year
$300-450
DIY route. Buy cable + software, flash yourself. Full tuning control.
chip
BT Moto
Custom Tuning
$400-600
Specializes in many brands. Often paired with intake mods for max power.
chip
TST Industries
TST WORX Performance ECU Tune 2023-2026 Ninja ZX-4RR; 2024-2026 ZX-4R
$250
Model-specific ECU reflash that adjusts fueling, ignition, and electronic throttle parameters.
07 · MIRRORS
Rizoma Stealth is the premium pick across most sport bikes. CRG bar-ends are the alternative.
mirror
Rizoma
Stealth Mirrors verify SKU
$320-420
Italian aerodynamic foil design. Generates downforce at speed. Premium aluminum.
mirror
mirror
08 · AIR FILTER
K&N, DNA, and Sprint all make bike-specific filters.
filter
Sprint Filter
P08 F1-85 verify SKU
$280-330
Italian polyester race filter. MotoGP/SBK-spec, waterproof, no oil maintenance.
filter
DNA Filters
Hi-Flow Cotton verify SKU
$100-180
4-layer cotton gauze. +20% airflow typical over stock.
filter
K&N
Race Air Filter verify SKU
$70-130
Oiled cotton, washable, million-mile warranty. Most widely available.
filter
09 · FRAME SLIDERS / CRASH PROTECTION
Cheap insurance. R&G and Evotech are the two go-to brands.
slider
Evotech Performance
Crash Protection verify fit
$180-250
UK-made, model-specific, aluminum + nylon polymer bobbins.
slider
R&G Racing
Aero Crash Protectors link pending
$150-220
UK gold standard. Race-proven design.
slider
GB Racing
Engine Case Covers track-day required
$200-350
Required at most track days. Protects expensive engine cases.
slider
Graves Motorsports
Frame Slider Kit 2023-2026 Ninja ZX-4R / ZX-4RR
$209.95
Model-specific crash-protection kit designed to reduce chassis contact during a slide.
10 · BRAKE & CLUTCH LEVERS
ASV, Pazzo, CRG, and Bonamici all make bike-specific kits.
lever
ASV
C5 / F3 Sport Brake & Clutch link pending
$230-280
CNC adjustable, fold-forward on crash. 5-year crash warranty.
lever
Bonamici Racing
Folding Race Levers link pending
$280-340
Italian billet, WSBK-proven, 90° upward fold to resist crash.
lever
lever
11 · WINDSCREEN
Reduces buffeting. Zero Gravity, Puig, and MRA dominate.
screen
Puig
Z-Racing / R-Racer verify SKU
$140-220
Spanish, 3mm acrylic, wind-tunnel tested. Multiple tints.
screen
Zero Gravity
Double Bubble / Corsa verify SKU
$100-140
US-made (CA). The most popular sport-bike windscreen.
screen
MRA
Racing Windshield link pending
$140-200
German double-bubble, taller for better buffet reduction.
screen
WRS
Race High Windscreen KA011 2023-2026 Ninja ZX-4R / ZX-4RR
$107.90
Race-profile windscreen shaped to reduce airflow around a tucked rider.
12 · REARSETS
Critical on a track-focused bike. Bonamici, Sato, Gilles, and Vortex are the four pillars.
rearset
Bonamici Racing
Adjustable Rearsets link pending
$600-800
Italian billet CNC. Bearings on all pivots. WSBK-proven.
rearset
Sato Racing
Adjustable Rearsets verify SKU
$550-700
Japanese billet. Multi-position pegs. QS-compatible variants.
rearset
Gilles Tooling
FXR Rearsets verify SKU
$700-900
German engineering, infinite adjustability. Premium option.
rearset
Vortex
V2 Adjustable link pending
$400-450
Value champion. Designed for track but happy on the street.
rearset
Graves Motorsports
Kawasaki ZX-4RR / ZX-4R Adjustable Rearsets 2023-2026 Ninja ZX-4R / ZX-4RR
$649
Adjustable rearsets for configurable footpeg, brake-pedal, and shift-lever positioning.
13 · PHONE MOUNT
Vibration dampener mandatory for iPhones on any sport bike.
phone
phone
phone
phone
phone
Rokform
Pro Series Motorcycle Stem Mount Universal
$119.99
Fork-stem phone mount with a locking case interface and adjustable viewing angle.
14 · SEAT / GRIP
Track-focused bikes lean toward grip. Comfort seats for street use.
seat
Stomp Grip
Tank Grip Pads
~$55
Tank grip pads. More important than comfort on a track bike.
seat
TechSpec
Snake Skin Tank Grips link pending
~$70
Rubber grip in patterns. Full bike-grip kits available.
15 · RACE FAIRINGS / BODYWORK
For track-day riders. Protects OEM panels, sheds weight, easier maintenance.
body
Hotbodies Racing
Color Form Fiberglass Race Bodywork Set 2023–2026
$949.95
Green fiberglass race set includes upper, lower, superbike tail, and front fender with reinforced mounts.
✓ Fits 2023–2026
Track only.
Confirmed Spend $0 Lock or install products to track