20 Best 400ex Top End Gasket Kit [2024]

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

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# Preview Product
1 Tusk Top End Gasket Kit For HONDA TRX 400EX 1999-2008 Tusk Top End Gasket Kit For HONDA TRX 400EX 1999-2008
2 KIPA Complete Top End Head Gasket Kit For TRX400EX TRX 400EX Sportrax 400 1999-2008 TRX400X TRX 400X... KIPA Complete Top End Head Gasket Kit For TRX400EX TRX 400EX Sportrax 400 1999-2008 TRX400X TRX...
3 BH-Motor New Complete Gasket Kit Top & Bottom End Set for Honda 400EX TRX400EX TRX 400EX 1999-2004 BH-Motor New Complete Gasket Kit Top & Bottom End Set for Honda 400EX TRX400EX TRX 400EX 1999-2004
4 TOP NOTCH PARTS PISTON CYLINDER GASKET RINGS AIR FILTER TOP END KIT SET FITS HONDA TRX400EX TRX... TOP NOTCH PARTS PISTON CYLINDER GASKET RINGS AIR FILTER TOP END KIT SET FITS HONDA TRX400EX TRX...
5 Top End Gasket Kit Set Fit for Honda TRX 400EX 1999-2014 trx400ex 400 Head gaskets Top End Gasket Kit Set Fit for Honda TRX 400EX 1999-2014 trx400ex 400 Head gaskets
6 NICHE 97cc Cylinder Piston Gasket Top End Kit for Honda Sportrax XR400R TRX400X TRX400EX... NICHE 97cc Cylinder Piston Gasket Top End Kit for Honda Sportrax XR400R TRX400X TRX400EX...
7 NE Super Gaskets kit Replacement for HONDA TRX 400EX 400X 1999-2014 TRX400EX XR400R 1996-2004 NE Super Gaskets kit Replacement for HONDA TRX 400EX 400X 1999-2014 TRX400EX XR400R 1996-2004
8 TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT FITS HONDA TRX400EX TRX 400EX 99 00... TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT FITS HONDA TRX400EX TRX 400EX 99...
9 NICHE Cylinder Piston Gasket Camshaft Top End Kit for Honda TRX400 XR400R 12100-KCY-670... NICHE Cylinder Piston Gasket Camshaft Top End Kit for Honda TRX400 XR400R 12100-KCY-670...
10 Amhousejoy Complete Gasket Kit Engine Top Bottom End Gaskets Set Fit for Honda 400EX TRX400EX TRX... Amhousejoy Complete Gasket Kit Engine Top Bottom End Gaskets Set Fit for Honda 400EX TRX400EX TRX...
11 Top End Head Gasket Kit Replacement for TRX 400EX 400X 1999-2014 TRX400EX XR400R 1996-2004 Top End Head Gasket Kit Replacement for TRX 400EX 400X 1999-2014 TRX400EX XR400R 1996-2004
12 HICKS 85mm Bore 12100-KCY-670 PISTON CYLINDER GASKET RINGS AIR FILTER TOP END KIT SET FITS HON-DA... HICKS 85mm Bore 12100-KCY-670 PISTON CYLINDER GASKET RINGS AIR FILTER TOP END KIT SET FITS HON-DA...
13 Tektall Top End Gasket Cylinder Piston Kit For Sportrax 400 TRX400EX TRX400X 2X4 Standard Bore 85mm... Tektall Top End Gasket Cylinder Piston Kit For Sportrax 400 TRX400EX TRX400X 2X4 Standard Bore...
14 Top End Gasket Kit Honda TRX400EX TRX 400 EX 400EX 1999-2008 Top End Gasket Kit Honda TRX400EX TRX 400 EX 400EX 1999-2008
15 maXpeedingrods 85mm 397cc Cylinder Piston Gasket Top End Kit for Honda Sportrax 400EX TRX400X... maXpeedingrods 85mm 397cc Cylinder Piston Gasket Top End Kit for Honda Sportrax 400EX TRX400X...
16 CQYD Top End Head Gasket Kit for TRX 400EX 400 X 1999-2014 TRX400EX XR400R 1996-2004 CQYD Top End Head Gasket Kit for TRX 400EX 400 X 1999-2014 TRX400EX XR400R 1996-2004
17 NICHE 397cc Cylinder Piston Gasket Filter Top End Kit For Honda Sportrax TRX400X TRX400EX... NICHE 397cc Cylinder Piston Gasket Filter Top End Kit For Honda Sportrax TRX400X TRX400EX...
18 waltyotur 89MM Complete Gasket Kit Set Top and Bottom End Set Replacement for Honda TRX400EX TRX... waltyotur 89MM Complete Gasket Kit Set Top and Bottom End Set Replacement for Honda TRX400EX TRX...
19 Amhousejoy Complete Gasket Kit Top and Bottom End Set Fit for Honda TRX400EX TRX 400EX 1999-2004 Amhousejoy Complete Gasket Kit Top and Bottom End Set Fit for Honda TRX400EX TRX 400EX 1999-2004
20 FainWan Complete Top End Head Gasket Kit Compatible with TRX400EX TRX 400EX Sportrax 400 1999-2008... FainWan Complete Top End Head Gasket Kit Compatible with TRX400EX TRX 400EX Sportrax 400...
Bestseller No. 1
Tusk Top End Gasket Kit For HONDA TRX 400EX 1999-2008
  • See fitment guide image for additional Machines this item fits. Tusk Top End Gaskets are made from the highest quality materials available.
  • Kits come complete with head and base gaskets and other necessary gaskets and parts to rebuild the top end on your motorcycle or ATV.
Bestseller No. 2
KIPA Complete Top End Head Gasket Kit For TRX400EX TRX 400EX Sportrax 400 1999-2008 TRX400X TRX 400X...
  • Complete Top End Head Gasket Kit For TRX400EX TRX 400EX Sportrax 400 1999-2008
  • Complete Top End Head Gasket Kit For TRX400X TRX 400X 2009-2014
  • Non-Asbestors Gasket with seal
  • This is a Top Quality Brand new aftermarket Replacement Part
  • Easy to install, manual is not included, However, You may search lots of video online. Thanks
Bestseller No. 4
TOP NOTCH PARTS PISTON CYLINDER GASKET RINGS AIR FILTER TOP END KIT SET FITS HONDA TRX400EX TRX...
  • REPLACES OEM NUMBER: 12100-KCY-670 12191-KCY-672 13011-KCY-670 13101-KCY-670 90601-KA5-000 13111-KCY-670 12251-HN1-003 12391-KCY-671 14560-KCW-851
  • AFTERMARKET REPLACEMENT HONDA TRX400EX CYLINDER PISTON TOP END KIT
  • PURCHASE INCLUDES: 1X CYLINDER 1X PISTON. 1X PISTON PIN. 2X CIRCLIPS. 1X COMPLETE SET OF RINGS. 1X HEAD GASKET. 1X BASE GASKET. 1X HEAD COVER GASKET....
  • PARTS FIT: 1999 - 2008 HONDA TRX400EX.
  • ADULT SIGNATURE REQUIRED FOR DELIVERY
Bestseller No. 5
Top End Gasket Kit Set Fit for Honda TRX 400EX 1999-2014 trx400ex 400 Head gaskets
  • 1.Top end gasket kit set fit for Honda TRX 400EX 1999-2014 trx400ex 400
  • 2.New high quality replacement parts
  • 3.Exact kits you will recieve are pictured
  • 4.Please verify this is the right part number before ordering
  • 5.Direct replacement for a proper fit and easy installation, quality materials used
Bestseller No. 6
NICHE 97cc Cylinder Piston Gasket Top End Kit for Honda Sportrax XR400R TRX400X TRX400EX...
  • Replaces OEM Part Numbers: Honda 12100-KCY-670, 12100-HN1-A70,13101-KCY-670, 13011-KCY-670,13111-KCY-670, 90601-KA5-000,12251-HN1-003,...
  • Compatible with Honda 1996-2004 XR400R, 1999-2008 Sportrax TRX400EX, 2009, 2012-2014 TRX400X
  • Includes Cylinder, Cylinder Head, Cylinder Head Cover, Piston, Piston Rings, Wristpin, Circlips
  • Head Gasket, Base Gasket, Head Cover Gasket, Chain Tension Gasket, O-Ring and Spark Plug
  • 85mm x 70mm Bore and Stroke, 9.1:1 Compression, 397cc Displacement
Bestseller No. 7
NE Super Gaskets kit Replacement for HONDA TRX 400EX 400X 1999-2014 TRX400EX XR400R 1996-2004
  • NE Gaskets are made from the highest quality materials available.
  • As Shown in Photo, Ships Quick!
Bestseller No. 8
TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT FITS HONDA TRX400EX TRX 400EX 99 00...
  • REPLACES OEM NUMBER 12100-KCY-670 12191-KCY-672 13011-KCY-670 13101-KCY-670 90601-KA5-000 13111-KCY-670 12251-HN1-003 12391-KCY-671 14560-KCW-851
  • HONDA TRX 400EX 440cc BIG BORE CYLINDER PISTON TOP END KIT
  • PISTON TOP HAS A CERAMIC COATING PROVIDING SUPERIOR HEAT RESISTANCE WHICH WILL EXTEND THE LIFE SPAN OF THE PISTON. * THIS IS THE BEST QUALITY KIT ON...
  • PURCHASE INCLUDES: 1X CYLINDER 1X PISTON. 1X PISTON PIN. 2X CIRCLIPS. 1X COMPLETE SET OF RINGS. 1X HEAD GASKET. 1X BASE GASKET. 1X HEAD COVER GASKET....
  • PARTS FIT: 1999 - 2008 HONDA TRX 400EX.
Bestseller No. 9
NICHE Cylinder Piston Gasket Camshaft Top End Kit for Honda TRX400 XR400R 12100-KCY-670...
  • Replaces OEM Part Numbers: Honda 12100-HN1-A70, 12191-KCY-672,12391-KCY-671, 14000-HN1-A70, 13011-KCY-670, 13101-KCY-670,13111-KCY-670,...
  • Compatible with the 1996-2004 Honda XR400R, 1999-2008 Honda Sportrax TRX400EX, 2009, 2012-2014 Honda TRX400X
  • Includes Cylinder, Camshaft, Piston, Piston Ring Set, Wristpin and Circlips
  • Also Includes Head and Base Gaskets, O-Ring and NGK Spark Plug
  • Cylinder Bore and Stroke 85mm x 70mm
Bestseller No. 10
Amhousejoy Complete Gasket Kit Engine Top Bottom End Gaskets Set Fit for Honda 400EX TRX400EX TRX...
  • Brand New Complete Engine Gasket Kit
  • Gasket Kit Fits for Honda TRX400EX 1999-2004
  • Direct Replacement for a Proper fit for and Easy Installation
  • Package includes 1 * Gasket Kit Top & Bottom End Set
  • Quality Assurance: You can get a replacement or full refund if our product was damaged in 90 days. If you got any problem please contact with us and...
Bestseller No. 11
Top End Head Gasket Kit Replacement for TRX 400EX 400X 1999-2014 TRX400EX XR400R 1996-2004
  • Brand New Replacement Gasket Kit fit for TRX 400EX 400X 1999-2014 TRX400EX XR400R 1996-2004
  • -High quality and durable, top quality material and asbestos free.Great replacement for your old one.Enhance your love machine performance
  • Fits these machines: TRX 400EX 400X 1999-2014,XR400R 1996-2004
  • Use pictures as reference.We strongly suggest to look carefully to images that we provide to compare with your faulty unit-
Bestseller No. 12
HICKS 85mm Bore 12100-KCY-670 PISTON CYLINDER GASKET RINGS AIR FILTER TOP END KIT SET FITS HON-DA...
  • REPLACES OEM NUMBER: 12100-KCY-670 12191-KCY-672 13011-KCY-670 13101-KCY-670 90601-KA5-000 13111-KCY-670 12251-HN1-003 12391-KCY-671 14560-KCW-851
  • PURCHASE INCLUDES: 1X CYLINDER 1X PISTON. 1X PISTON PIN. 2X CIRCLIPS. 1X COMPLETE SET OF RINGS. 1X HEAD GASKET. 1X BASE GASKET. 1X HEAD COVER GASKET....
  • AFTERMARKET REPLACEMENT Hon-da TRX400EX CYLINDER PISTON TOP END KIT.
  • PARTS FIT: 1999 - 2008 Hon-da TRX400EX.
Bestseller No. 13
Tektall Top End Gasket Cylinder Piston Kit For Sportrax 400 TRX400EX TRX400X 2X4 Standard Bore 85mm...
  • 【Fitment】Tektall Top End Gasket Cylinder Piston Kit Fits for Sportrax 400 TRX400EX TRX400X 2X4 1999-2008
  • 【Replaces Part Number】 Replace for 12100-HN1-A70, 12191-KCY-672,13011-KCY-670, 13101-KCY-670,13111-KCY-670, 90601-KA5-000,98061-59616,...
  • 【Good Quality】 Tektall Top End Gasket Cylinder Piston Kit use low-expansion, low-friction piston alloy to extend the life of the piston. The...
  • 【Long Life】 The Tektall top rebuild kit is very suitable for replacing the air blowing cylinder. It is made of the highest quality materials,...
  • 【Package Includes】 You will get everything shown in the picture. Please confirm the item if it matches your machine before you purchase.
Bestseller No. 15
maXpeedingrods 85mm 397cc Cylinder Piston Gasket Top End Kit for Honda Sportrax 400EX TRX400X...
  • [Wide Applications] - This aftermarket cylinder piston gasket kit fit for Honda Sportrax 400 TRX400EX 1999-2008
  • [ Excellent Design] - Complete standard sized replacement cylinder kit. 85 mm x 70 mm Bore and Stroke; 397cc Displacement; 9.1:1 Compression
  • [Package Contents] - 1 x Cylinder,1 x Piston,1 x Piston Pin,1 x Spark Plug,2 x Circlips,1 x Head Gasket,1 x Base Gasket,1 x Head Cover Gasket,2 x...
  • [Part Number] -...
  • [Premium Quality] - The kit is made of high-strength metal material,can effectively improve heat,pressure,high temperature and corrosion...
Bestseller No. 16
CQYD Top End Head Gasket Kit for TRX 400EX 400 X 1999-2014 TRX400EX XR400R 1996-2004
  • Fits these machines: HONDA TRX 400EX 400X 1999-2014,HONDA XR400R 1996-2004
  • Included item are detailed in the product pictures
  • Mounts up to the original equipment perfectly
  • Complete Gasket Kits are made from the highest quality materials available.
  • Kits come complete with all necessary gaskets to completely rebuild the top and bo ttom end on your motorcycle or ATV.
Bestseller No. 17
NICHE 397cc Cylinder Piston Gasket Filter Top End Kit For Honda Sportrax TRX400X TRX400EX...
  • Replaces OEM Part Numbers: Honda 12100-KCY-670, 12100-HN1-A70,13101-KCY-670, 13011-KCY-670,13111-KCY-670, 90601-KA5-000,12251-HN1-003,...
  • Compatible with Honda 1999-2008 Sportrax TRX400EX, 2009, 2012-2014 TRX400X
  • Includes Cylinder, Piston, Piston Rings, Wristpin, Circlips, Head Gasket, Base Gasket, O-Ring
  • Head Cover Gasket, Chain Tension Gasket, Air Cleaner, Fuel Filter, Oil Filter and Spark Plug
  • A Complete Standard Sized Replacement Cylinder & Filter Kit
SaleBestseller No. 18
waltyotur 89MM Complete Gasket Kit Set Top and Bottom End Set Replacement for Honda TRX400EX TRX...
  • Replacement for: 1999-2004 Honda Sportrax 400 TRX400EX 2x4
  • Please review all product information to ensure that this product is compatible with your unit
  • We provide carefree return, Please shop with confidence
  • NOTE: If there is any issues about our product, do not hesitate to contact us. We will work actively for you
  • High quality replacement parts
Bestseller No. 19
Amhousejoy Complete Gasket Kit Top and Bottom End Set Fit for Honda TRX400EX TRX 400EX 1999-2004
  • Quality Assurance: You can get a replacement or full refund if our product was damaged in 90 days. If you got any problem please contact with us and...
  • Easy Installation
  • The sets compatibles with Honda 400EX TRX400EX TRX 400EX 1999-2004
  • Actual kit you will get is pictured
  • Please double check the years and models in the description to make sure it fit for your vehicle before ordering
Bestseller No. 20
FainWan Complete Top End Head Gasket Kit Compatible with TRX400EX TRX 400EX Sportrax 400 1999-2008...
  • Complete Top End Head Gasket Kit For TRX400EX TRX 400EX Sportrax 400 1999-2008
  • Complete Top End Head Gasket Kit For TRX400X TRX 400X 2009-2014
  • Non-Asbestors Gasket with seal
  • This is a Top Quality Brand new aftermarket Replacement Part
  • Easy to install, manual is not included, However, You may search lots of video online. Thanks

Having trouble finding a great 400ex top end gasket kit?

This problem is well understood by us because we have gone through the entire 400ex top end gasket kit research process ourselves, which is why we have put together a comprehensive list of the best 400ex top end gasket kits available in the market today.

After hours of searching and using all the models on the market, we have found the best 400ex top end gasket kit for 2023. See our ranking below!

How Do You Buy The Best 400ex Top End Gasket Kit?

Do you get stressed out thinking about shopping for a great 400ex top end gasket kit? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching 400ex top end gasket kit, which is why we have assembled a comprehensive list of the greatest 400ex top end gasket kit available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 400ex top end gasket kit that you consider buying. Your questions might include the following:

  • Is it worth buying an 400ex top end gasket kit?
  • What benefits are there with buying an 400ex top end gasket kit?
  • What factors deserve consideration when shopping for an effective 400ex top end gasket kit?
  • Why is it crucial to invest in any 400ex top end gasket kit, much less the best one?
  • Which 400ex top end gasket kit are good in the current market?
  • Where can you find information like this about 400ex top end gasket kit?

We’re convinced that you likely have far more questions than just these regarding 400ex top end gasket kit, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 400ex top end gasket kit, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 400ex top end gasket kit. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an 400ex top end gasket kit buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 400ex top end gasket kit currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of 400ex top end gasket kit has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 400ex top end gasket kit?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 400ex top end gasket kit.
  5. Customer Ratings: Number ratings grade 400ex top end gasket kit objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 400ex top end gasket kit.
  7. Product Quality: You don’t always get what you pay for with an 400ex top end gasket kit, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 400ex top end gasket kit is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining 400ex top end gasket kit information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding 400ex top end gasket kit is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

Related Post:

FAQ:

Q: What is in a trx400ex winderosa engine gasket set?

A: TRX400EX Winderosa Complete Gasket Set and Seal Kit – This complete engine gasket set also includes all of the engine oIl seals – crank, kickstart, countershaft, and ETC. Winderosa Gaskets are extremely high quality US made gasket sets. TRX400EX Hot Rods Connecting Rod – Available in stock stroke.

Q: Will 5 angle valves work on a 400ex?

A: The 5 angle valve job really shines on big valves as the seat diameter is opened up all the way into the aluminum casting, blending to the port work. Adding +1mm valves to a modified engine package helps the mid to top-end horsepower. Most aftermarket hi compression pistons are NOT clearanced for +1mm valves, on the 400ex.

Q: What size pistons are in a trx400ex?

A: TRX400EX Wossner Piston Kit 87-87.5mm Big Bore 415cc – Available 11:1 and 12.5:1 Comp Ratios. TRX400EX Vertex Piston Kit 85-86mm – Available 9.3:1 Comp Ratio.

Q: How much does a trx400ex hard faced rocker arm cost?

A: TRX400EX Hard Faced Rocker Arm Kit – $75.00 core charge or send us your rockers. Dynatek Programmable ATV Ignition – Direct plug in performance: 4 programmable timing curves, programmable rev limiter, external curve selector switch, plug-in module replacement, and more. Keihin FCR Carburetor Kits – Available in 39mm and 41mm.