Top 10 Best Big Bore Kit For 400Ex in 2022

Finding the best big bore kit for 400ex is somewhat daunting when you have plenty of choices to pick. Many of you are getting confused when you can’t sort out the best big bore kit for 400ex out of many choices. Here we will discuss different types of choices with unique features of them and give you a broad outline to choose between the ideal one.

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Top Rated Best Big Bore Kit For 400Ex in 2022

Rank Product Name Score
1
NICHE 89mm 440cc Big Bore Cylinder Piston Kit For Honda TRX400X XR400R 1996-2014 12100-HN1-A7
NICHE 89mm 440cc Big Bore Cylinder Piston Kit For Honda TRX400X XR400R 1996-2014 12100-HN1-A7
8.4/10
2
89mm 440CC Cylinder Piston Kit Compatible with 1999-2014 TRX400X TRX400EX Big Bore Sportrax XR400R Replace 12100-HN1-A70
89mm 440CC Cylinder Piston Kit Compatible with 1999-2014 TRX400X TRX400EX Big Bore Sportrax XR400R Replace 12100-HN1-A70
8.4/10
3
NICHE Cylinder Piston Gasket Camshaft Top End Kit for Honda 1996-2014 TRX400 XR400R 12100-KCY-670
NICHE Cylinder Piston Gasket Camshaft Top End Kit for Honda 1996-2014 TRX400 XR400R 12100-KCY-670
9.4/10
Sale4
Cylinder Piston Gasket Kit FIts Honda Sportrax TRX400EX (1999-2008) Bore 85mm
Cylinder Piston Gasket Kit FIts Honda Sportrax TRX400EX (1999-2008) Bore 85mm
9.1/10
5
TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT FITS HONDA TRX400EX TRX 400EX 99 00 01 02 03 04 05 06 07 08
TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT FITS HONDA TRX400EX TRX 400EX 99 00 01 02 03 04 05 06 07 08
9.2/10
6
MOFANS 12191-KCY-672 85mm Bore Piston Complete Standard Sized Cylinder Piston Kit with Gaskets Fit for Compatible with Honda Trx400ex TRX 400EX 1999-2008 12100-KCY-670
MOFANS 12191-KCY-672 85mm Bore Piston Complete Standard Sized Cylinder Piston Kit with Gaskets Fit for Compatible with Honda Trx400ex TRX 400EX 1999-2008 12100-KCY-670
8.6/10
7
Cylinder Piston Gasket Kit Fits Honda Sportrax TRX400EX (1999-2008) Big Bore 89mm
Cylinder Piston Gasket Kit Fits Honda Sportrax TRX400EX (1999-2008) Big Bore 89mm
8.5/10
8
Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft For 99 00 01 02 03 04 05 06 07 08 Honda Trx400ex TRX 400ex 440cc
Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft For 99 00 01 02 03 04 05 06 07 08 Honda Trx400ex TRX 400ex 440cc
8.3/10
9
NICHE Big Bore Piston Kit for Honda Sportrax 400 TRX400 XR400R 1996-2014 13101-KCY-670 13102-KCY-670
NICHE Big Bore Piston Kit for Honda Sportrax 400 TRX400 XR400R 1996-2014 13101-KCY-670 13102-KCY-670
8.4/10
10
labwork New 89MM Big Bore Top End Gasket Fit for Honda TRX400EX TRX 400EX 440
labwork New 89MM Big Bore Top End Gasket Fit for Honda TRX400EX TRX 400EX 440
9.1/10

1 NICHE 89mm 440cc Big Bore Cylinder Piston Kit For Honda TRX400X XR400R 1996-2014 12100-HN1-A7

  • 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, 12251-HN1-003,12100-KCY-670, 12100-KCY-670, 12191-KCY-672
  • 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

2 89mm 440CC Cylinder Piston Kit Compatible with 1999-2014 TRX400X TRX400EX Big Bore Sportrax XR400R Replace 12100-HN1-A70

  • Compatible with: Honda 1999-2008 TRX400EX Sportrax 2009 TRX400X 2012-2014 TRX400X 1999-2004 XR400R
  • Content: Cylinder (89mm), Piston, Piston Rings, 2* O-Rings (2), Wristpin and 2* Circlips, Gasket,Spark Plug
  • Replace Part Number: 12100-HN1-A70, 12191-KCY-672,13011-KCY-670, 90601-KA5-000,13101-KCY-670, 13111-KCY-670,91301-428-003, 12251-HN1-003,12100-KCY-670, 12100-KCY-670, 12191-KCY-672
  • Feature: We adopt the highest grade materials to make our product. It bring durable and reliable feature under extreme conditions.
  • Warranty: For any reason, if you are not satisfied with your purchase, contact us directly. We offer a one-year warranty, 100% satisfaction guarantee.

3 NICHE Cylinder Piston Gasket Camshaft Top End Kit for Honda 1996-2014 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, 90601-KA5-000,98061-59616,12100-KCY-670,14000-HN1-000
  • 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

Sale4 Cylinder Piston Gasket Kit FIts Honda Sportrax TRX400EX (1999-2008) Bore 85mm

  • Fits: Honda Sportrax TRX400 EX (1999-2008)
  • STD Bore 85mm / Displacement 397cc
  • This product is tested to Exceed Original Equipment Standards and Performance
  • This product includes Piston Kit, Gasket Kit, OE Type Cylinder
  • THIS ITEM HAS TO BE INSTALLED BY PROFESSIONAL MECHANICS SPECIALIZED IN ATV AND UTVs, PLEASE ASK FOR MANUAL INSTRUCTIONS IF NEEDED

5 TOP NOTCH PARTS 440cc BIG BORE CYLINDER PISTON RINGS TOP END KIT FITS HONDA TRX400EX TRX 400EX 99 00 01 02 03 04 05 06 07 08

  • 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 EBAY! EQUAL TO OR BETTER THAN OEM
  • 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. 1X CHAIN TENSIONER GASKET. 1X GASKET MAKER. 1X THREAD LOCK. 1X FUEL FILTER. 1X OIL FILTER. 1X FREE NGK SPARK PLUG
  • PARTS FIT: 1999 - 2008 HONDA TRX 400EX.

6 MOFANS 12191-KCY-672 85mm Bore Piston Complete Standard Sized Cylinder Piston Kit with Gaskets Fit for Compatible with Honda Trx400ex TRX 400EX 1999-2008 12100-KCY-670

  • Fitment: Top End Kit Fit for Compatible with Honda Trx400ex TRX 400EX 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008.
  • Replacement Part #: 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.
  • Package Included: 1 set complete cylinder piston rebulid kit.
  • Condition: 100% Brand New.

7 Cylinder Piston Gasket Kit Fits Honda Sportrax TRX400EX (1999-2008) Big Bore 89mm

  • Fits: Honda Sportrax TR400EX (1999-2008)
  • OEM Replacement
  • Big Bore 89mm x 70mm / Cylinder Displacement 440cc / Compression 10:1
  • This product includes Piston Kit, Gasket Kit, OE Type Cylinder
  • THIS ITEM HAS TO BE INSTALLED BY PROFESSIONAL MECHANICS SPECIALIZED IN ATV AND UTVs, PLEASE ASK FOR MANUAL INSTRUCTIONS IF NEEDED

8 Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft For 99 00 01 02 03 04 05 06 07 08 Honda Trx400ex TRX 400ex 440cc

  • Replaces OEM Part # 12100-KCY-670 12191-KCY-672 12200-KCY-670 12251-MBV-013 12310-KCY-672 12391-KCY-671 13011-KCY-670 13101-KCY-670 13111-KCY-670 90601-KA5-000 14000-KCY-670 15410-KF0-315
  • TOP NOTCH PARTS REPLACEMENT 440cc BIG BORE CYLINDER, COMPLETE HEAD AND PERFORMANCE CAMSHAFT HONDA TRX 400EX
  • COMPLETE HEAD AND PERFORMANCE CAMSHAFT HONDA TRX 400EX
  • THIS CAMSHAFT OFFERS 15% INCREASE IN POWER WORKS WELL WITH STANDARD AND BIG BORE KITS UP TO 440cc
  • 1X PISTON. 1X PISTON PIN. 2X CIRCLIPS. 1X COMPLETE SET OF RINGS. 1X HEAD GASKET. 1X BASE GASKET. 1X HEAD COVER GASKET. 1X CHAIN TENSIONER GASKET. 1X COMPLETE CYLINDER HEAD (POLISHED INTAKE AND EXHAUST PORT) 1X PERFORMANCE CAMSHAFT 1X GASKET MAKER. 1X THREAD LOCK. 1X FUEL FILTER. 1X AIR FILTER 1X OIL FILTER. 1X FREE NGK SPARK PLUG

9 NICHE Big Bore Piston Kit for Honda Sportrax 400 TRX400 XR400R 1996-2014 13101-KCY-670 13102-KCY-670

  • NICHE Big Bore Piston Bore Size 89mm; Material: Aluminum Alloy; Surface Coating: None; Type: Flat
  • Piston Replaces OEM Part Numbers: Honda 13101-KCY-670, 13102-KCY-670, 13103-KCY-670
  • Compatible with Honda 1996-2004 XR400R, 1999-2008 Sportrax 400 TRX400EX 2x4
  • Compatible with Honda 2009, 2012-2014 TRX400X
  • Includes Piston, Piston Ring, and Wristpin

10 labwork New 89MM Big Bore Top End Gasket Fit for Honda TRX400EX TRX 400EX 440

  • New 89mm big bore top end gasket fit for Honda TRX400EX TRX 400EX 440
  • New & High Quality

How to Choose the Best Big Bore Kit For 400Ex

With so many sellers out there, it can be hard to decide who is the best one for you. There may even seem like every single person has different requirements! But don’t worry because we’ve got your back – here are seven things that all shoppers should consider before making any purchase:

1. Price

To avoid paying too much for a good product, it’s important to consider the price. If you can’t afford an expensive item and would rather buy something cheaper or wait until there is a promotion on sale then remember that sometimes quality matters more than cost! One thing shoppers need realize though: not everything comes at an affordable rate no matter how cheap prices seem so always read carefully before buying anything new online-you never know what kind of joke someone might be trying to pull where their products’ real value falls short from its wholesome selling points due solely because some unscrupulous company makes use low grade materials while claiming theirs are high end items made by professionals with years experience etcetera.

2. Brand

When it comes to fashion, there is a lot of debate on what brands are worth investing in. Some people think that major or well-known companies have higher quality products because you know exactly how your purchase will turn out if they sell durable goods from time tested designers with established reputable names like Ralph Lauren and Nike Inc., while others prefer buying unknown brands where anything can happen since no one has tried them before so nothing would be lost even if something goes wrong during delivery etcetera. The best way for me personally was going through both sides until finally landing somewhere between these two extremes: buy a recognizable name.

3. Function

What are you looking for in a ? Will the one that suits your needs perform all of these tasks like a pro and with ease. If it doesn’t, then don’t buy into its claims! Check out product descriptions carefully because sometimes companies modify products to cater different customer demographics or target markets – so make sure when buying anything new from them, even if they say “exactly what I wanted!” All this means is paying attention; always do some research before making purchases.

4. Customer Reviews

One of the best ways to find out if a purchase is right for you in terms of product quality would be by reading through customer testimonials. You should look at both positive and negative reviews so that they can give all benefits as well side-effects when purchasing products online like this one, – For All Budgets!

5. Pros and Cons

If you’re uncertain if your purchase is worth the cost, consider all of its benefits and drawbacks. Is this product going to provide me with what I want out of it? Or am i simply buying into something because other people think its great too (based on reviews)? You could also look at a description or even customer feedback when brainstorming pros/cons. If we carefully weigh these aspects before making any final decisions regarding our purchases then hopefully everything will turn out perfectly in due course!

6. Service

You should always read the company’s policies when buying items. Make sure they’re reliable, and if something happens down the line- will you still be able to get help?

7. Warranty

In the end, a warranty is important for any major purchase. However it’s especially critical with expensive items because you can’t afford to buy an item again if something goes wrong within one month of owning them. If there isn’t even confidence in quality from manufacturers after selling products then consider their unwillingness as reason not too trust them and jump ship before things get worse!

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