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    Bikes / Kawasaki / Ninja 400 (all years)

    2021 Kawasaki Ninja 400

    243 aftermarket parts are listed for the 2021 Kawasaki Ninja 400, in 38 categories.

    Jump to a category (38)
    • Accessories
    • Air Intake
    • Axle Sliders
    • Bodywork / Fairings
    • Brakes
    • Chain
    • Cosmetic / Styling
    • Crash Protection
    • ECU / Tuning
    • Electronics
    • Engine Covers
    • Exhaust
    • Fender Eliminators
    • Foot Controls
    • Frame Sliders
    • Fuel System
    • Hand Controls
    • Handguards
    • Hardware / Fasteners
    • Integrated Tail Lights
    • Kickstands / Center Stands
    • Levers
    • Lighting
    • Mirrors
    • Oil System
    • Performance
    • Radiator Guards
    • Rearsets
    • Seats
    • Sprockets
    • Stator Covers
    • Steering Dampers
    • Suspension
    • Swingarm Spools
    • Tank Grips
    • Turn Signals
    • Wheels
    • Windscreens

    Performance

    Ninja 400 Air Intake

    See all 7 →
    • Graves MotorsportsGraves Motorsports Velocity Stacks Kawasaki Ninja 400 / Z400 / Ninja 500 / Z500 2018-2026
      $129.95
    • HiFloFiltroHiFloFiltro Air Filter / Street
      from $7.15
    • K&NK&N Air Filter
      from $60.31
    • Sprint Air FiltersSprint Air Filter P08 Kawasaki 18-23 Ninja 250, 18-24 Ninja 400, 24-26 Ninja 500, 23-25 ZX-4R/RR
      $111.99

    Ninja 400 ECU / Tuning

    See all 7 →
    • DynojetDynojet Power Commander 6
      from $334.43
    • Flash Tune ECUFlash Tune Data-Link ECU Flashing Kit '18-'22 Kawasaki Ninja 400/Z400
      from $380.00
    • Flash Tune ECUFlash Tune ECU-Based Quickshifter Kit for '18-'22 Kawasaki Ninja 400
      $240.00
    • FTECUFTECU Data-Link ECU Flashing Kit for Kawasaki Ninja 400 2018-2023
      $380.00

    Ninja 400 Exhaust

    See all 27 →
    • Hindle2018-23 Kawasaki Ninja400, Ninja 500 Hindle EVO Megaphone Full System Low
      $529.99
    • Hindle2018-23 Kawasaki Ninja400, Ninja 500 Hindle Evolution Megaphone Full System Kawasaki
      $574.99
    • Hindle76-0144 KawasakiNinja400 Megaphone Slipon Adapter Elbow (122)
      $110.00
    • AkrapovicAkrapovic Exhaust Headers Kawasaki Ninja 400 / Z400 / Ninja 500 / Z500 2018-2026
      $485.39

    Ninja 400 Fuel System

    See all 2 →
    • Driven RacingDriven Racing Halo Fuel Cap Base
      from $93.99
    • LighTechLighTech Gas Caps
      from $137.20

    Ninja 400 Oil System

    See all 5 →
    • BikeMasterBikeMaster Oil Filter BM-303
      $7.99
    • Gilles ToolingGilles Tooling Oil Filler Cap Ducati / Honda / Kawasaki / Triumph / Yamaha
      $57.07
    • K&NK&N Oil Filters
      from $11.39
    • MotolisMotolis Oil Filter
      from $6.99

    Ninja 400 Performance

    See all 5 →
    • Graves MotorsportsGraves High Precision Cam Chain Tensioner
      from $198.95
    • Graves MotorsportsGraves High Precision Cam Chain Tensioner Kawasaki Ninja 400 2018-2023
      $198.95
    • Graves MotorsportsGraves Motorsports WORKS Clutch Upgrade Kit Kawasaki Ninja 400 / Z400 2018-2023
      $75.99
    • TST IndustriesTST Clutch Return Spring for Kawasaki Ninja 400 2018-2023
      $5.99

    Protection

    Ninja 400 Axle Sliders

    See all 3 →
    • Woodcraft45-0137R FRONT or REAR on Ninja400/500 & Z400/500 --- REAR only on ZX4-RR
      $89.99
    • Woodcraft45-0144A Axle Slider Base Nut Side, Kawasaki Ninja 400 2018-20
      $25.00
    • WoodcraftWoodcraft Front/Rear Axle Slider Kit '18-'21 Kawasaki Ninja/Z 400
      $89.99

    Ninja 400 Crash Protection

    See all 13 →
    • Woodcraft27-1099 Slider Spool Replacement Puck
      $12.99
    • Woodcraft27-2008S 8mm Spool Sleeve
      $4.00
    • Woodcraft45-1144 Axle Slider Puck, Clip Style
      $19.99
    • Woodcraft45-4099 Quick Release Pin (45-0144FR)
      $1.99

    Ninja 400 Engine Covers

    See all 8 →
    • Woodcraft60-0144LC Kawasaki Ninja 400 LH Stator Cover Protector BASE COVER ONLY - NO SKID PAD
      $138.00
    • Woodcraft60-0144RC Kawasaki Ninja 400 RHS Clutch Cover Protector BASE COVER ONLY - NO SKID PAD
      $108.00
    • Woodcraft60-0144WPC Kawasaki Ninja 400, Z400 Water Pump Cover w/Puck
      $99.99
    • Woodcraft60-2500 Silicone Pad, Engine Cover Protectors
      $5.00

    Ninja 400 Frame Sliders

    See all 5 →
    • GB RacingGB Racing Bullet Race Frame Sliders
      from $50.12
    • Graves MotorsportsGraves Frame Sliders Kawasaki Ninja 400 / 500 2018-2026
      $209.95
    • Shogun MotorsportsShogun No Cut Frame Sliders '18-'21 Kawasaki Ninja 400/Z400
      $99.99
    • ShogunShogun Protection Kits
      from $99.00

    Ninja 400 Handguards

    See all 1 →
    • Womet-TechWomet-Tech ProGuard Universal Brake Lever Guard
      $99.99

    Ninja 400 Radiator Guards

    See all 1 →
    • Evotech PerformanceEvotech Performance Radiator Guard '18-'19 Kawasaki Ninja 400/Z400
      $85.79

    Ninja 400 Stator Covers

    See all 2 →
    • GB RacingGB Racing Alternator Cover
      from $100.60
    • WoodcraftWoodcraft Stator Cover Yamaha Tracer 900 / FZ / FJ / MT-09 / XSR900 / R9 2014-2026
      from $129.99

    Appearance

    Ninja 400 Bodywork / Fairings

    See all 4 →
    • Armour Bodies71-0144F Kawasaki Ninja 400 Fender
      $113.00
    • Armour Bodies71-0144SPR Kawasaki Ninja 400 Right Side Panel
      $93.00
    • Armour BodiesArmour Bodies Bodywork
      from $113.00
    • PuigPuig Downforce Sport Side Spoilers '18-'23 Kawasaki Ninja 400
      $249.31

    Ninja 400 Cosmetic / Styling

    See all 2 →
    • TST IndustriesTST Anodized Accent Washer Set
      $2.99
    • YoshimuraYoshimura Motorcycle License Plate Frame
      $29.95

    Ninja 400 Fender Eliminators

    See all 11 →
    • Graves MotorsportsGraves Fender Eliminator Kit
      from $83.45
    • New Rage CyclesNew Rage Cycles LED Fender Eliminator
      from $100.00
    • Competition WerkesNinja 400 Fender Eliminator
      $109.95
    • PuigPuig Fender Eliminator Kit
      from $62.08

    Ninja 400 Mirrors

    See all 6 →
    • Woodcraft47-MBW Mirror Block Off Plates (Pair) - 35-50mm spacing
      $19.95
    • Graves MotorsportsGraves Motorsports WORKS Mirror Block Off Screw Kit Kawasaki
      $38.50
    • New Rage CyclesNew Rage Cycles Mirror Block Off Plates Kawasaki Ninja 400 2018-2023
      $30.00
    • PuigPuig Bar End Mirror Adapter
      from $9.52

    Ninja 400 Seats

    See all 2 →
    • Armour Bodies71-0144SSB 2018-23 Kawasaki Ninja400, Kawasaki Ninja500 SuperBike Seat Base
      $167.99
    • WoodcraftArmour Bodies Seat Pad
      from $47.50

    Ninja 400 Tank Grips

    See all 7 →
    • Graves MotorsportsGraves Motorsports Tank Grip
      from $64.95
    • R&G RacingR&G Racing Second Skin Polyurethane Protective Film
      from $24.99
    • StompGripStompGrip Volcano Traction Tank Pad Kit 2018+ Kawasaki Ninja 400
      $64.95
    • TechSpecTechSpec Gripster "Spine Style" Center Tank Protector
      $31.96

    Ninja 400 Windscreens

    See all 1 →
    • PuigPuig Z-Racing Windscreen
      from $91.25

    Chassis

    Ninja 400 Brakes

    See all 25 →
    • All Balls RacingAll Balls Racing Front Brake Master Cylinder Rebuild Kit
      from $28.31
    • All Balls RacingAll Balls Racing Front Caliper Rebuild Kit 18-3085
      $42.70
    • EBC BrakesEBC Double-H Sintered Front Brake Pads
      from $31.15
    • EBC BrakesEBC Double-H Sintered Rear Brake Pads
      from $29.57

    Ninja 400 Chain

    See all 2 →
    • Vortex RacingVortex V3 SSA Chain And Sprocket Kit
      from $281.67
    • Vortex RacingVortex V3 WSS Chain And Sprocket Kit
      from $262.46

    Ninja 400 Foot Controls

    See all 15 →
    • Woodcraft05-0144KSM Kawasaki Ninja 400 Kick Stand Eliminator Mount
      $26.00
    • Woodcraft05-0144R Kawasaki Ninja 400 Right Bracket
      $85.00
    • Woodcraft05-K144 Kawasaki Ninja400 Shift Knuckle
      $49.99
    • Woodcraft06-4801 Replacement Footpeg with Bolt (also supersedes 06-4811)
      $29.99

    Ninja 400 Hand Controls

    See all 8 →
    • WoodcraftClipon Riser 5 Degree Bar Sleeve
      $20.00
    • Evotech PerformanceEvotech Brake And Clutch Lever Protector Kit (Race) - Kawasaki Ninja 400 (2018+)
      £123.33
    • Evotech PerformanceEvotech Brake Lever Protector Kit (Race) - Kawasaki Ninja 400 (2018+)
      £79.16
    • LighTechLighTech One Color Bar Ends Kawasaki Ninja / Z / ER-6 / CF Moto 650NK
      $57.99

    Ninja 400 Hardware / Fasteners

    See all 2 →
    • TST IndustriesTST Reflective License Plate Mounting Hardware
      $3.99
    • YoshimuraYoshimura Titanium License Plate Frame Bolts
      $21.99

    Ninja 400 Kickstands / Center Stands

    See all 3 →
    • Hepco & BeckerHepco & Becker Side Stand Enlarger '17+ Kawasaki Ninja 400
      $77.99
    • PuigPUIG Kickstand Extension for '15-'23 Kawasaki Versys 650
      $44.14
    • R&G RacingR&G Racing Kickstand Shoe '18- Kawasaki Ninja 250/400
      $65.99

    Ninja 400 Levers

    See all 6 →
    • ASV InventionsASV C5 Sport Brake Lever Kawasaki / Honda / Suzuki / Benelli
      $150.00
    • CRGCRG RC2 Brake Lever Kawasaki / Honda
      $129.95
    • CRGCRG RC2 Clutch Lever Kawasaki Ninja 250R / 300 / 400 2008-2023
      $129.95
    • Evotech PerformanceEvotech Evo Short Brake and Clutch Lever Set - Kawasaki Ninja 400 (2018+)
      £125.00

    Ninja 400 Rearsets

    See all 4 →
    • Woodcraft05-0144B 2018-23 Kawasaki Ninja400, 2019-23 Z400, Ninja500 Complete Rearset
      $519.99
    • Bonamici RacingBonamici Adjustable Rearsets 18-23 Kawasaki Ninja 400
      $619.50
    • Gilles ToolingGilles Tooling FXR Rearsets Kawasaki Ninja 400 / Z400 2018-2023
      $511.85
    • WoodcraftWoodcraft Rearset Kit
      from $249.99

    Ninja 400 Sprockets

    See all 7 →
    • Driven RacingDriven Racing 520 Steel Rear Sprocket
      from $50.39
    • JT SprocketsJT Sprockets Front Sprocket
      from $4.95
    • SuperliteSuperlite XD Series Chromoly Steel Front Sprocket for Kawasaki - 520 Pitch
      $28.95
    • Vortex RacingVortex 520 CAT5 Aluminum Rear Sprocket
      from $61.16

    Ninja 400 Steering Dampers

    See all 2 →
    • GPR StabilizerGPR V5S Stabilizer/Steering Damper '18-'21 Kawasaki Ninja 400
      $525.00
    • GPR StabilizerV5-S Street Bike Stabilizer Kit
      $250.00

    Ninja 400 Suspension

    See all 10 →
    • All Balls RacingAll Balls Racing Steering Bearing Kit 22-1014
      $53.88
    • BituboBitubo JBH Fork Cartridge Kit Kawasaki Ninja 400 / 500 2018-2026
      $980.95
    • BituboBitubo XXT Rear Shock
      $1,547.95
    • K-Tech SuspensionK-Tech 20IDS Front Fork Cartridges Kit 18-26 Kawasaki Ninja 400, 24-26 Ninja 500 (Spring Included)
      $1,125.62

    Ninja 400 Swingarm Spools

    See all 7 →
    • Woodcraft27-0800 8mm Swingarm Spools
      $18.99
    • Graves MotorsportsGraves Swingarm Spools Kawasaki Ninja 400 / ZX-6R / ZX-10R 2016-2025
      $32.99
    • ShogunShogun Swingarm Sliders
      from $26.99
    • TST IndustriesTST M8 Anodized Aluminum Swingarm Spools
      $25.99

    Ninja 400 Wheels

    See all 7 →
    • All Balls RacingAll Balls Racing Front Wheel Bearing Kit
      from $11.16
    • All Balls RacingAll Balls Racing Front Wheel Bearing Kit 25-1104
      $20.59
    • Driven RacingDriven Racing Captive Axle Blocks Kawasaki Ninja 400 / Z400
      $143.99
    • Driven RacingDriven Racing Captive Wheel Spacers
      from $62.39

    Electronics

    Ninja 400 Accessories

    See all 1 →
    • TST IndustriesTST ECHO Anodized Color Ring Set
      $5.99

    Ninja 400 Electronics

    See all 12 →
    • Woodcraft43-0107 2018-23 Kawasaki Ninja400, Ninja500 Keyswitch Elimination Harness
      $64.99
    • Antigravity BatteriesAntigravity Batteries ATZ-10-HD Re-Start Lithium Ion Battery
      $251.99
    • BikeMasterBikeMaster BTX9-BS Maintenance Free Battery
      $49.99
    • BS BatteryBS Battery SLA Factory-Activated AGM Battery
      from $60.45

    Ninja 400 Integrated Tail Lights

    See all 4 →
    • Motorcycle Parts HouseIntegrated Taillight | Ninja 400
      $149.95
    • MotodynamicMotodynamic Sequential LED Tail Light 2018+ Kawasaki Ninja 400 | Light Smoke
      $99.95
    • TST IndustriesTST Industries LED Integrated Tail Light 18-23 Kawasaki Ninja 400, 19-23 Z400
      $141.99
    • TST IndustriesTST Programmable and Sequential LED Integrated Tail Light for Kawasaki Ninja 400 2018-2023 / Z400 2019-2023
      $141.99

    Ninja 400 Lighting

    See all 1 →
    • TST IndustriesTST LED Low-Profile Universal Fit License Plate Light
      $17.99

    Ninja 400 Turn Signals

    See all 8 →
    • TST IndustriesTST BL6 Universal Sequential LED Pod Turn Signals
      $53.99
    • TST IndustriesTST ECHO Universal LED Pod Turn Signals
      $52.99
    • TST IndustriesTST MECH-EVO Universal LED Pod Turn Signals
      $64.99
    • TST IndustriesTST Nexus LED Front Turn Signals for Kawasaki Ninja 650 2012+
      from $115.99

    More categories

    • Device Mounts
    • Engine Rebuild Kits
    • Luggage Racks
    • Radiators
    • Tires
    • Towing & Hitches
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