20 Best 2001 Honda 400 Ex [2024]

Are you looking for the best 2001 honda 400 ex? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling 2001 honda 400 ex.

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1 Carburetor Assembly Carb for Honda Sportrax 400 TRX400EX 2x4 1999-2008 ATV, TRX400X 2x4 2009-2015... Carburetor Assembly Carb for Honda Sportrax 400 TRX400EX 2x4 1999-2008 ATV, TRX400X 2x4 2009-2015...
2 Cyleto Front and Rear Brake Pads For Honda TRX400X TRX 400X 2009-2014 / TRX400EX TRX 400EX Sportrax... Cyleto Front and Rear Brake Pads For Honda TRX400X TRX 400X 2009-2014 / TRX400EX TRX 400EX...
3 M MATI Ignition Coil & Spark Plug & CDI for Honda TRX400 EX Sportrax 400 2x4 1999-2004 30500-HN1-003... M MATI Ignition Coil & Spark Plug & CDI for Honda TRX400 EX Sportrax 400 2x4 1999-2004...
4 M MATI Handlebar Switch Start Stop Headlight for Honda ATV TRX400EX Fourtrax Sportrax 1999-2004... M MATI Handlebar Switch Start Stop Headlight for Honda ATV TRX400EX Fourtrax Sportrax 1999-2004...
5 Carburetor ATV Carb for 2001-2015 Honda Sportrax TRX400, 1999-2008 Honda Sportrax 400 TRX400EX 2x4,... Carburetor ATV Carb for 2001-2015 Honda Sportrax TRX400, 1999-2008 Honda Sportrax 400 TRX400EX...
6 7/8' Brake Master Cylinder for Honda TRX 250 300 350 400 450 Foreman Rancher Recon Ricon Yamaha... 7/8" Brake Master Cylinder for Honda TRX 250 300 350 400 450 Foreman Rancher Recon Ricon Yamaha...
7 Karbay Carburetor Rebuild Kit for Honda TRX400EX 1999-2004 400EX TRX 400 EX Carb Repair Karbay Carburetor Rebuild Kit for Honda TRX400EX 1999-2004 400EX TRX 400 EX Carb Repair
8 East Lake Axle replacement for Rear Axle & Bearing Carrier Honda TRX 400 EX / 400 X Sportrax 400... East Lake Axle replacement for Rear Axle & Bearing Carrier Honda TRX 400 EX / 400 X Sportrax 400...
9 Partman Carburetor Carb fit for Honda TRX 400 TRX400EX Sportrax FourTrax TRX400X ATV 16100-HN1-A43... Partman Carburetor Carb fit for Honda TRX 400 TRX400EX Sportrax FourTrax TRX400X ATV...
10 M MATI Rear Brake Master Cylinder Assembly for Honda TRX400EX 1999-2008 TRX400X 2009-2014 Fourtrax... M MATI Rear Brake Master Cylinder Assembly for Honda TRX400EX 1999-2008 TRX400X 2009-2014...
11 32100-HN1-000, Motorcycle Wiring Harness Assy for Honda TRX400EX TRX 400 EX, 1999-2004, 32100HN1000 32100-HN1-000, Motorcycle Wiring Harness Assy for Honda TRX400EX TRX 400 EX, 1999-2004, 32100HN1000
12 East Lake Axle replacement for rear Axle Bearing Carrier Honda TRX 250R / 400 / 400EX 1986 1987 1988... East Lake Axle replacement for rear Axle Bearing Carrier Honda TRX 250R / 400 / 400EX 1986 1987...
13 Handlebar Switch Start Stop Headlight Fits for 1999-2004 Honda TRX400EX Fourtrax Sportrax... Handlebar Switch Start Stop Headlight Fits for 1999-2004 Honda TRX400EX Fourtrax Sportrax...
14 AHL Starter Solenoid Relay for Honda TRX400EX Sportrax 2002-2007 ATV / TRX300EX Sportrax 2001-2006 /... AHL Starter Solenoid Relay for Honda TRX400EX Sportrax 2002-2007 ATV / TRX300EX Sportrax 2001-2006...
15 NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670... NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670...
16 K&N Engine Air Filter: High Performance, Premium, Powersport Air Filter: Fits 1999-2014 HONDA... K&N Engine Air Filter: High Performance, Premium, Powersport Air Filter: Fits 1999-2014 HONDA...
17 Mighty Max Battery YTX9-BS SLA Battery for Honda TRX 400 700 EX 400EX Sportrax Fourtrax Brand... Mighty Max Battery YTX9-BS SLA Battery for Honda TRX 400 700 EX 400EX Sportrax Fourtrax Brand...
18 DSparts 2x H6m 100W LED Super White HeadLight Bulbs Fit For Honda TRX 250 300 400 450 700 DSparts 2x H6m 100W LED Super White HeadLight Bulbs Fit For Honda TRX 250 300 400 450 700
19 FRONT BRAKE CALIPER SET REPLACEMENT FOR HONDA TRX 300EX TRX 250EX TRX 400EX LEFT & RIGHT FRONT BRAKE CALIPER SET REPLACEMENT FOR HONDA TRX 300EX TRX 250EX TRX 400EX LEFT & RIGHT
20 250pc Specbolt Fasteners Brand Bolt Kit: fits Honda TRX400EX TRX250X aslo Great for ATC & TRX 350x... 250pc Specbolt Fasteners Brand Bolt Kit: fits Honda TRX400EX TRX250X aslo Great for ATC & TRX...
Bestseller No. 1
Carburetor Assembly Carb for Honda Sportrax 400 TRX400EX 2x4 1999-2008 ATV, TRX400X 2x4 2009-2015...
  • Fits Honda Sportrax 400 TRX400 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
  • Fits Honda TRX400X 2009 2010 2011 2012 2013 2014 2015
Bestseller No. 2
Cyleto Front and Rear Brake Pads For Honda TRX400X TRX 400X 2009-2014 / TRX400EX TRX 400EX Sportrax...
  • POSITION - Front & Rear, Provide Excellent Braking Performance, Durable and Long Working Life (The Brake Pads Have Been Designed for The Brake Disk to...
  • KEVLAR CARBON FIBER BRAKE PADS FIT - 2009 2010 2011 2012 2013 2014 Honda TRX400X, 1987 1988 1989 1990 1991 1992 Honda TRX250X Fourtrax, 1993 1994 1995...
  • DIMENSION - 46 x 45 x 7.8mm(1.81 x 1.77 x 0.31 inch).
  • ADVICE - Please check the description to confirm the compatibility before purchasing.If you don't ensure whether this BRAKE PADS fit for your...
  • INCLUDED - 3 Pair (6 pads)
Bestseller No. 3
M MATI Ignition Coil & Spark Plug & CDI for Honda TRX400 EX Sportrax 400 2x4 1999-2004 30500-HN1-003...
  • Manufacturer Part # 30500-HN1-003 30700-KCZ-000 30410-HN1-003
  • Fitment:Fit for Honda ATV TRX400EX Sportrax 2x4 1999-2004
  • Feature:This is high quality ignition set repalcement for Honda TRX400EX Sportrax 400 2x4 1999-2004. Replace this ignition set can fix most start...
  • Package:there are CDI Box× 1,Spark Plug× 1,Ignition Coil× 1 packed in a box.
  • Service:If there is any product problem within 1 year, please contact us to solve it for you.We provide product service.
Bestseller No. 4
M MATI Handlebar Switch Start Stop Headlight for Honda ATV TRX400EX Fourtrax Sportrax 1999-2004...
  • Manufacturer Part# 35020-HN1-000
  • Fitment:Fit for Honda TRX400EX Sportrax 400 1999-2004
  • Function:Switch Function include Engine Start,Switch Engine Stop,Switch Headlight On Off and Switch Headlight Hi Lo
  • Package:A Start Stop Headlight handlebar switch is packed in a fine box
  • Service: Please check the fitment detail before you place an order.If there is any other question to confirm,please contact us to solve it.
Bestseller No. 5
Carburetor ATV Carb for 2001-2015 Honda Sportrax TRX400, 1999-2008 Honda Sportrax 400 TRX400EX 2x4,...
  • CARBURETOR REPLACEMENT: You will get the fairly reliable and durable carb to help deliver optimum engines performance and to give your ATV the new...
  • PREMIUM QUALITY: This carburetor is manufactured to the highest production standards which means that it is good at mixing fuel and air, keeps your...
  • FITS: 2001-2015 Honda Sportrax TRX400, 99-08 Honda Sportrax 400 TRX400EX 2x4, 09-14 Honda TRX400X, 99-00 Honda FourTrax TRX400. Replaces#...
  • Inner Diameter (intake side): 39mm/ Outer Diameter (intake side): 43mm, Inner Diameter (air filter side): 54mm/ Outer Diameter(air filter side): 58mm
  • 24-MONTH WARRANTY: If for any reason at all, you are not fully satisfied with the carburetor assembly, you can contact us through amazon message for...
Bestseller No. 6
7/8" Brake Master Cylinder for Honda TRX 250 300 350 400 450 Foreman Rancher Recon Ricon Yamaha...
  • 1 pack premiem honda Brake Master Cylinder- Right, Front
  • Fit for Honda TRX 200 300 350 400 450 + Rancher 350 400 420 +Foreman 400 450 500 TRX400FW TRX450FE TRX450FM TRX450FE TRX500FE TRX500FM TRX500FPE 4x4...
  • OEM Replacement NO.# :45510-HM3-901,45510-HM3-306 ,45510-HM3-305
  • Size: piston bore: 14mm,banjo bolt: 10x1.25mm; Outlet Location: Front, Facing Front Tire
  • Fit on 7/8" Handlebar ONLY
Bestseller No. 7
Karbay Carburetor Rebuild Kit for Honda TRX400EX 1999-2004 400EX TRX 400 EX Carb Repair
  • ★Fits Models:Honda TRX400EX 400EX TRX 400 EX 1999-2004
  • ★Free Shipping
  • ★Includes: 1 Complete Carburetor Rebuild Kit
  • ★100% Brand New and High Quality
  • ★Factory direct pricing and Product support.
Bestseller No. 8
East Lake Axle replacement for Rear Axle & Bearing Carrier Honda TRX 400 EX / 400 X Sportrax 400...
  • Please verify your year, make and model in the product details before purchasing.
  • OEM Replacement. Brand New Complete Rear Wheel Axle and Bearing Carrier
  • 1 Year No Fault Warranty
  • Stock Length
Bestseller No. 9
Partman Carburetor Carb fit for Honda TRX 400 TRX400EX Sportrax FourTrax TRX400X ATV 16100-HN1-A43...
  • Part number: 16100-HN1-A43 16100-HN1-A41 16100-HN1-A42
  • For 1999-2000 TRX400 FourTrax 2001-2006 TRX400 Sportrax 2007-2015 TRX400 Sportrax
  • High quality products, excellent after-sales service
  • If you have any questions, please contact us and we will respond within 24 hours
  • See below for more information
Bestseller No. 10
M MATI Rear Brake Master Cylinder Assembly for Honda TRX400EX 1999-2008 TRX400X 2009-2014 Fourtrax...
  • Manufacturer Part # 43510-HN1-016
  • Replacement Part # 43510-HN1-006
  • Fitment: Fit for Honda ATV ▶ TRX400EX 1999-2008 ▶ TRX400X 2009-2014
  • Materials: This Rear Foot Brake Master Cylinder is made of high quality materials,duable to use, easy to install
  • Service:If there is any product problem within 1 year, please contact us to solve it for you.We provide product service.
Bestseller No. 11
32100-HN1-000, Motorcycle Wiring Harness Assy for Honda TRX400EX TRX 400 EX, 1999-2004, 32100HN1000
  • FACTORY WIRING HARNESS APPLICATION - Motorcycle Wiring Harness Assy fit for 1999 2000 2001 2002 2003 2004 Honda TRX400EX TRX 400 EX.
  • ELECTRICS WIRING HARNESS REPLACE - Motorcycle wiring harness replace 32100-HN1-000 32100HN1000
  • MOTORCYCLE WIRING HARNESS FUNCTION - Motorcycle wiring harness consisting of wires, plug-ins, and outer wrapping protective insulation quickly...
  • MATERIAL + INSTALLATION - High quality ABS material, Direct replacement. Easy installation, O.E.M. style connector for an exact fit. Unique coverage...
  • SERVICE - 2-years shelf life. If you have any question, please feel free to email us ,and we will reply you ASAP.
Bestseller No. 12
East Lake Axle replacement for rear Axle Bearing Carrier Honda TRX 250R / 400 / 400EX 1986 1987 1988...
  • Please verify your year, make and model below before purchasing.
  • OEM Replacement. Brand New Complete Rear Bearing Carrier
  • Fully Assembled / Ready for install
  • 1 Year Warranty on bearing carrier
Bestseller No. 13
Handlebar Switch Start Stop Headlight Fits for 1999-2004 Honda TRX400EX Fourtrax Sportrax...
  • 【Manufacturer Part Number】: 35020-HN1-000
  • 【Compatible with】: 1999-2000 TRX400EX Fourtrax 400EX; 2001-2004 TRX400EX Sportrax 400EX
  • 【Excellent quality】: Made of durable material which is totally corrosion and dust resistant, each item has been factory tested and meets or...
  • 【Easy to install】. Direct replacement the worn original part. Only requires a couple of minutes of your time. Watching a video on the Internet is...
  • 【After-sales service】: No need to worry about problems in the project. Please don't hesitate to contact us if there is any question, we will reply...
Bestseller No. 14
AHL Starter Solenoid Relay for Honda TRX400EX Sportrax 2002-2007 ATV / TRX300EX Sportrax 2001-2006 /...
  • Compatible with:Honda TRX400EX Sportrax 2002 2003 2004 2005 2006 2007 , Honda TRX300EX Sportrax 2001-2006 , Honda TRX300EX FOURTRAX 1993-2003, Honda...
  • Replace Oem Code: 35850-HM3-000,35850-HB3-771,35850-HM8-000
  • High quality material,efficient and durable with competitive price
  • OEM replacement starter relay solenoid,ideal for the motorbike
  • Quality Assurance!If you are not satisfied with our products,we accept all of the return,replacement or refund requests
Bestseller No. 15
NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670...
  • Replaces OEM Part Numbers: Honda 12100-HN1-A70, 12191-KCY-672,13011-KCY-670, 90601-KA5-000,13101-KCY-670, 13111-KCY-670,91301-428-003,...
  • Compatible with Honda 1996-2004 XR400R, 1999-2008 Sportrax TRX400EX, 2009, 2012-2014 TRX400X
  • Includes Cylinder (89mm), Piston, Piston Rings, O-Rings (2), Wristpin and Circlips (2)
  • Also Includes Base Gasket and Head Gasket
  • Cylinder Bore and Stroke 89.00mm x 70.00mm; Cylinder Material: Aluminum; Cylinder Sleeve Coating: None
Bestseller No. 16
K&N Engine Air Filter: High Performance, Premium, Powersport Air Filter: Fits 1999-2014 HONDA...
  • ULTIMATE LONGEVITY: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle
  • ENGINEERED POWER: State-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration...
  • EASY INSTALLATION: Pre-oiled and ready to install One of the easiest and most cost-effective upgrades for your motorcycle or ATV for quick performance...
  • SAVES MONEY: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters
  • ECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste A K&N filter will last longer than 10 disposable filters
Bestseller No. 17
Mighty Max Battery YTX9-BS SLA Battery for Honda TRX 400 700 EX 400EX Sportrax Fourtrax Brand...
  • YTX9-BS is a 12V 8AH 135 Cold Cranking Amps (CCA) Sealed Lead Acid (SLA) Battery
  • Dimensions: 5.90 inches x 3.38 inches x 4.25 inches. Polarity: Positive on left, Negative on right. Listing is for the Battery and Screws only. No...
  • SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures, long service life and deep discharge recover
  • Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures
  • Backed by a 30 day refund policy and full 1 year warranty
Bestseller No. 18
DSparts 2x H6m 100W LED Super White HeadLight Bulbs Fit For Honda TRX 250 300 400 450 700
  • Aftermarket item, exactly same function as original
  • Power: 100W/Set; 50W/Bulb lumens:1200lm
  • Voltage; DC12V-24V Beam Angle:360°
  • Usage:SignalLight,DoorLight, Reading light
  • Base: H6m or 70023, If one headlight ever fails please contact us for a new replacement.
Bestseller No. 19
FRONT BRAKE CALIPER SET REPLACEMENT FOR HONDA TRX 300EX TRX 250EX TRX 400EX LEFT & RIGHT
  • Compatible Model: Replacement for HONDA TRX 400EX TRX 300EX TRX 250EX
  • Black anodized brackets (prevent rust ), Sintered metal pads included
  • FIT FOR THE FOLLOWING MODELS: TRX400EX 1999-2008, TRX300EX 1995-2008, TRX250EX 2001-2008
  • Brand New and Well Packaged.
  • High quality products with competitive price, fast delivery and good service, free shipping and shipped from USA warehouse.
SaleBestseller No. 20
250pc Specbolt Fasteners Brand Bolt Kit: fits Honda TRX400EX TRX250X aslo Great for ATC & TRX 350x...
  • 250 pieces of original factory fit flange bolts, lug nuts, and fender washers
  • Strong heat treated 8.8 & 10.9 grade bolts for replacing missing damaged bolts
  • Generous selection of the correct Nylon Push Rivets for fenders and bumper skid plate bolts
  • Used for maintenance, repair, and or restoration of 400EX 250EX and X models
  • Complete and organized in a tough 18 compartment high impact poly storage box

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FAQ:

Q: What is the top speed of a Honda 400ex?

A: It has a 28 horsepower engine and the Honda 400EX has a top speed of 72 MPH. The 400EX also sports a sturdy steel frame with removable sub-frame and exceptionally rigid cast aluminum swing-arms.

Q: What kind of oil does a Honda TRX 400ex take?

A: A Honda TRX 400EX ATV requires 10w40 ATV oil and has an oil capacity of 2 Quarts. Fully Synthetic oil is not required unless engine performance has been increased with after-market parts or has already been using synthetic oil.

Q: How many gallons of fuel does a 400ex hold?

A: Honda 400EX Weight : 375 LBS Fuel Capacity : 2.6 gallons including 0.4 gallon reserve Colors : Black, Red 400EX Top Speed : 72 MPH

Q: What is the standard size of a 400ex piston?

A: Standard 400ex piston size to CC ratios are as follows These sizes are affected by natural wear over time. If you measure your piston opening and find it has a reading of 85.35mm then it is most likely an 85.25 400cc engine with 0.10 in overbore. Select your 400ex piston size and rings accordingly when you plan your rebuild.