Enhance Your Honda 400Ex with a 440 Big Bore Kit: A Guide to the Best Options

Honda’s 400EX 440 Big Bore Kit is an excellent upgrade for any enthusiast looking to add power and performance to their ride. This kit increases the displacement of the engine from 400cc to 440cc, allowing for higher horsepower output and better acceleration. With its combination of complexity and simplicity, Honda’s 400EX 440 Big Bore Kit is the perfect choice for those looking to take their vehicle to the next level. It offers a great balance of perplexity and burstiness that make it ideal for experienced riders looking to get the most out of their machine. With this kit, riders can expect improved performance, increased torque, and a smoother ride overall.

Why Best Honda 400Ex 440 Big Bore Kit Is Necessary?

The Best Honda 400Ex 440 Big Bore Kit is necessary for those looking to increase the power output of their vehicle. The kit includes a larger bore cylinder, piston, gaskets, and other necessary components to increase engine displacement from 397cc to 440cc. This increased displacement allows for a greater amount of air and fuel to be burned in the engine, resulting in increased horsepower. Additionally, the kit also comes with high-performance components that make the engine more efficient and reliable over time. Installing this kit can make your Honda 400Ex a real powerhouse on the road or track.

Comperision Chart for Best Honda 400Ex 440 Big Bore Kit

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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

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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

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NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003

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NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003

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Top Notch Parts Replacement Fits Honda Xr400r XR 400R 440cc Big Bore Cylinder Kit Complete Head Polished Ports Performance Camshaft 96 97 98 99 00 01 02 03 04

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Top Notch Parts Replacement Fits Honda Xr400r XR 400R 440cc Big Bore Cylinder Kit Complete Head Polished Ports Performance Camshaft 96 97 98 99 00 01 02 03 04

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Wiseco W5942 Big Bore Replacement Gasket Kit - Fits: Honda TRX 400EX 1999-2008

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Wiseco W5942 Big Bore Replacement Gasket Kit – Fits: Honda TRX 400EX 1999-2008

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6 Sigma Carb Jet Kit fits 1999-13 Honda 400EX ATV 416 426 440 460 cc Big Bore Stroker Custom Performance Stage 1-3 Carburetor Jetting

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6 Sigma Carb Jet Kit fits 1999-13 Honda 400EX ATV 416 426 440 460 cc Big Bore Stroker Custom Performance Stage 1-3 Carburetor Jetting

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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

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Are you looking for an upgrade to your Honda TRX 400EX? Look no further than the Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft! This all-in-one package comes with everything you need to get your bike running at peak performance. It includes a 440cc big bore cylinder, complete head and performance camshaft, allowing for a 15% increase in power. The head is polished and the ports are performance-tuned for optimal performance. Additionally, youll get a piston, piston pin, circlips, a complete set of rings, a head gasket and cover gasket, chain tensioner gasket, and more. Even better? An oil filter, air filter and fuel filter are included in the package. Plus, youll get a free NGK spark plug too!
Why We Like This
Replaces OEM parts 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
Complete head and performance camshaft for increased power
Includes all necessary parts for installation
Polished ports for maximum performance
Free NGK spark plug included
Common Questions & Answers
Q: Is adult signature required for delivery?
A: Yes, adult signature is required for delivery of this product.
Q: Will this product work with standard and big bore kits up to 440cc?
A: Yes, this camshaft offers increased power when used with standard or big bore kits up to 440cc.
Q: What other parts come with this package?
A: This package includes a piston pin, circlips, complete set of rings, head gasket and cover gasket, chain tensioner gasket as well as fuel filter, air filter and oil filter.

Additional Product Information

NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003

 NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003

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The NICHE 440cc Big Bore Cylinder Piston Kit for Honda Sportrax TRX400EX TRX400X XR400R 13111-KCY-670 91301-428-003 is the perfect upgrade for your Honda ATV. This kit includes a cylinder, piston, piston rings, O-rings (2), wristpin, and circlips (2). Also included are a base gasket and head gasket to make installation a breeze. This kit is compatible with the 1996-2004 XR400R, 1999-2008 Sportrax TRX400EX, and the 2009 and 2012-2014 TRX400X.

Why We Like This
Cylinder Bore & Stroke 89.00mm x 70.00mm
Cylinder Material: Aluminum
Compatible with Honda 1996-2004 XR400R, 1999-2008 Sportrax TRX400EX, 2009 & 2012-2014 TRX400X
Includes Cylinder (89mm), Piston, Piston Rings, O-Rings (2), Wristpin & Circlips (2)
Also Includes Base Gasket & Head Gasket for easy installation

Common Questions & Answers
Q: What is included in this kit?
A: The NICHE 440cc Big Bore Cylinder Piston Kit includes a cylinder (89mm), piston, piston rings, O-rings (2), wristpin and circlips (2). It also includes a base gasket and head gasket for easy installation.
Q: Is this kit compatible with my Honda ATV?
A: Yes! This kit is compatible with Honda 1996-2004 XR400R, 1999-2008 Sportrax TRX400EX, 2009 and 2012-2014 TRX400X models.
Q: What is the cylinder bore size?
A: The cylinder bore size of this kit is 89.00mm x 70.00mm.

Additional Product Information

Height 6.5
Length 11.5
Weight 7.7
Width 8.5

Top Notch Parts Replacement Fits Honda Xr400r XR 400R 440cc Big Bore Cylinder Kit Complete Head Polished Ports Performance Camshaft 96 97 98 99 00 01 02 03 04

 Top Notch Parts Replacement Fits Honda Xr400r XR 400R 440cc Big Bore Cylinder Kit Complete Head Polished Ports Performance Camshaft 96 97 98 99 00 01 02 03 04

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400 words, Five Bullet Points: 40 words, Three Common Questions & Answers: 60 words

Are you looking for a top-notch parts replacement for your Honda XR400R? Look no further! This 440cc Big Bore Cylinder Kit complete head and polished ports performance camshaft is exactly what you need. It comes with all the necessary parts to replace the 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. This kit is designed to fit 1996 – 2004 Honda XR 400Rs. With this kit you can expect better performance, improved power and higher torque than the standard OEM components.

Why We Like This
The piston top has a ceramic coating providing superior heat resistance which will extend the life span of the piston.
It comes with a complete cylinder head (polished intake and exhaust port), performance camshaft, gasket maker, thread lock, fuel filter, air filter and oil filter.
Comes with free NGK spark plug.
Easy to install and replace damaged or worn out parts.
Can be used to increase horsepower and torque.

Common Questions & Answers
Q: Is this product compatible with my Honda XR400R?
A: Yes, this product is compatible with 1996 – 2004 Honda XR 400Rs.
Q: Does it come with all necessary parts for installation?
A: Yes, it comes with all the necessary parts for installation including cylinder head (polished intake and exhaust port), performance camshaft, gasket maker, thread lock and fuel filter etc.
Q: Does it require any special tools for installation?
A: No special tools are required for installation, basic hand tools should be sufficient for most installations.

Additional Product Information

Wiseco W5942 Big Bore Replacement Gasket Kit – Fits: Honda TRX 400EX 1999-2008

 Wiseco W5942 Big Bore Replacement Gasket Kit - Fits: Honda TRX 400EX 1999-2008

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Are you looking for a reliable and high-quality replacement gasket kit for your Honda TRX 400EX? Look no more, because Wiseco has the perfect product for you. The Wiseco W5942 Big Bore Replacement Gasket Kit is designed to be compatible with your Honda TRX 400EX (1999-2008) and other models. It contains all the necessary gaskets and O-rings to rebuild the top end of your vehicle and is sourced in-house to find the most reliable suppliers available. With this Wiseco gasket kit, you can rest assured that you are getting a critical seal and superior durability that meets or exceeds OEM specifications.

Why We Like This
Compatible with Honda TRX 400EX (1999-2008) and other models
Contains all necessary gaskets and O-rings to rebuild the top end of your vehicle
Sourced in-house for highest quality suppliers available
Critical seal and superior durability that meets or exceeds OEM specifications
High quality materials engineered by Wiseco

Common Questions & Answers
Q: Is this replacement gasket kit suitable for Honda XR400 440 Overbore 1996-04?
A: Yes, it is suitable for Honda XR400 440 Overbore 1996-04 as well as XR400 (87-88mm bore) 1996-05, TRX400EX (87-88mm bore) 1999-08, and TRX400X (87-88mm bore) 2009-12.
Q: Is this product reliable?
A: Yes, the Wiseco W5942 Big Bore Replacement Gasket Kit is designed to be reliable with its high quality materials engineered by Wiseco to insure compatibility with Wiseco pistons and crankshafts. It also ensures a critical seal and superior durability that meets or exceeds OEM specifications.
Q: Does this product contain all necessary parts?
A: Yes, it contains all the necessary gaskets and O-rings required to rebuild your top end of your vehicle.

Additional Product Information

Length 7
Weight 0.18
Width 6

6 Sigma Carb Jet Kit fits 1999-13 Honda 400EX ATV 416 426 440 460 cc Big Bore Stroker Custom Performance Stage 1-3 Carburetor Jetting

 6 Sigma Carb Jet Kit fits 1999-13 Honda 400EX ATV 416 426 440 460 cc Big Bore Stroker Custom Performance Stage 1-3 Carburetor Jetting

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The 6 Sigma Carb Jet Kit is an amazing product for Honda 400EX ATV owners who want to maximize their engine performance. This kit includes everything you need to customize and upgrade your engine, from main jets, needle adjusters, and drill bits to slide hole mod (with CV carb), idle mixture mod, slide spring mod (with CV carb), and much more. The kit also comes with detailed instructions, full support, a 100% satisfaction guarantee, and a complete carb schematic. With this kit, you can expect increased performance at all RPMs, faster throttle response and the elimination of the lean exhaust popping that can damage your engine.

Why We Like This
Increased Performance at all RPMs – This kit ensures that your engine will run optimally at all times for maximum power output.
Faster Throttle Response – With this kit installed in your Honda 400EX ATV, youll experience a faster response time when accelerating or decelerating.
Stops Lean Exhaust Popping – Lean exhaust popping can damage an engines internal components, but this jet kit will stop it from happening so you dont have to worry about any additional wear or damage caused by the fuel mixture.
Easy Installation – Installing this jet kit is simple and straightforward; only basic hand tools are required and the included instructions make it easy to understand how to get it done right.
100% Satisfaction Guarantee – If youre not happy with the results after installation, 6 Sigma offers a full refund so theres no risk involved in trying out this product!

Common Questions & Answers
Q: Does this jet kit come with everything I need?
A: Yes! This jet kit includes main jets, needle adjusters, nylon spacers, drill bits, slide hole mod (with CV carb), idle mixture mod, slide spring mod (with CV carb), carb schematic specifications, carb sync tool build instructions, proper tuning techniques and step by step instructions with photos.
Q: Is installation difficult?
A: No! Installation is quite simple; only basic hand tools are required and the included instructions make it easy to understand how to get it done right.
Q: Is there a satisfaction guarantee?
A: Yes! 6 Sigma offers a 100% satisfaction guarantee; if youre not happy with the results after installation they will give you a full refund.

Additional Product Information

Benefits of Best Honda 400Ex 440 Big Bore Kit

1. Increased Horsepower & Torque: The Best Honda 400Ex 440 Big Bore Kit provides a dramatic increase in horsepower and torque, allowing for faster acceleration and improved off-road performance.
2. Improved Reliability & Longevity: The kit includes high-quality components that are designed to last, providing reliable performance over time.
3. Easier Maintenance: The new parts are easier to replace and maintain than the stock parts, saving time and money on upkeep.
4. More Versatile: The additional power and improved reliability makes the Best Honda 400Ex 440 Big Bore Kit more versatile than the stock engine, allowing for more challenging terrain or higher speeds.
5. Added Fun Factor: With all the extra power, you’ll have more fun on your ATV rides!

Buying Guide for Best Honda 400Ex 440 Big Bore Kit

Overview:
Honda 400Ex 440 Big Bore Kits are the perfect addition to any Honda 400Ex ATV. With the increased displacement, your ATV will be able to generate more power and torque. This means you’ll be able to accelerate faster and keep up with larger ATVs on the trail. The kits come with all the necessary components to complete the installation, including cylinders, pistons, gaskets, and other hardware. The installation is relatively easy and can be completed in a few hours.

Types of Kits:
Honda 400Ex 440 Big Bore Kits come in two different types: Stage 1 and Stage 2 kits. Stage 1 kits include cylinders and pistons that increase displacement from 397cc to 440cc. This is a great option for those who want a mild performance boost without breaking the bank. Stage 2 kits offer an even larger increase in displacement from 397cc up to 478cc. While it’s more expensive than Stage 1, it provides much more power and torque for those who want maximum performance from their ATV.

Features to Consider:
When shopping for Honda 400Ex 440 Big Bore Kits, there are several features you should consider before making your purchase. One of the most important features is cylinder bore size. Cylinder bore size refers to how large or small the inside diameter of the cylinder is when compared to its outside diameter. A larger bore size will allow more fuel and air into the combustion chamber which results in increased power output. You should also look at compression ratio which affects engine performance as well as fuel economy. Finally, make sure that the kit includes all necessary components such as gaskets, hardware, piston rings and cylinders so that you don’t have to buy them separately later on.

Price Range:
Honda 400Ex 440 Big Bore Kits range in price from $200-$500 depending on what type of kit you choose and what features it includes. The Stage 1 kits tend to be cheaper since they don’t offer as much performance as Stage 2 kits do but they’re still a great option for those who want a mild boost in power without spending too much money. On the other hand, if you’re looking for maximum performance then you’ll need to pay extra for a higher end kit with better components such as higher quality gaskets or larger bore sizes which can cost upwards of $500 or more depending on what you choose.

Benefits of Installing a Honda 400EX 440 Big Bore Kit:
Installing a Honda 400EX 440 Big Bore Kit has several benefits including increased power output due to increased displacement, improved fuel economy due to higher compression ratios, less engine wear due to higher quality components included in most kits and improved durability due to stronger internal components such as gaskets and pistons rings that can handle higher temperatures without failur

The Honda 400Ex 440 Big Bore Kit is an excellent choice for those looking to upgrade their quad’s performance. It provides a significant power boost and improved acceleration, making it perfect for racing or recreational use. It also offers great value for the money, as it is a relatively affordable upgrade. With its combination of performance and affordability, the Honda 400Ex 440 Big Bore Kit is one of the best upgrades available for your quad.

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