Unlock the Power of Your ATV with the Best 440 Big Bore Kit 400EX

Are you looking for an easy-to-install, powerful engine upgrade? The Best 440 Big Bore Kit 400Ex is the perfect solution. This kit increases the power of your ATV’s engine, enabling it to reach high speeds and revs with ease. By using this kit, you can experience a smooth ride and maximum performance from your ATV. With its combination of perplexing engineering and bursty performance, the Best 440 Big Bore Kit 400Ex is sure to transform your ATV into a powerful machine.

Why Best 440 Big Bore Kit 400Ex Is Necessary?

The Best 440 Big Bore Kit 400Ex is necessary because it allows riders to increase the displacement of their four-stroke engine and gain more power and torque. The kit includes a larger cylinder, piston, rings, gaskets, and other components that replace the stock parts and increase the bore size of the engine. This increases the amount of air and fuel that can be burned in each combustion cycle, resulting in more power and torque. The kit also decreases stress on the motor and improves its reliability. Riders who want more power from their four-stroke engine should consider installing a Best 440 Big Bore Kit 400Ex.

Comperision Chart for Best 440 Big Bore Kit 400Ex

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NewJ's 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit Fit for Honda TRX400EX TRX 400EX 1999-2008

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NewJ’s 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit Fit for Honda TRX400EX 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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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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labwork New 89MM Big Bore Top End Gasket Fit for Honda TRX400EX TRX 400EX 440

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

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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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NewJs 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit Fit for Honda TRX400EX TRX 400EX 1999-2008

 NewJs 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit Fit for Honda TRX400EX TRX 400EX 1999-2008

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Are you looking to upgrade the cylinder piston and top end kit of your Honda TRX400EX? Look no further! NewJ’s 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit is here for your convenience. This aftermarket replacement kit is designed to fit Honda TRX400EX models from 1999-2008 and comes with a number of components for easy installation. To make sure you get the best out of your purchase, it is compatible with part numbers 12100-KCY-670, 12191-KCY-672, 13011-KCY-670, 13101-KCY-670, 90601-KA5-000, 13111-KCY-670, 12251-HN1-003 and 12391-KCY-671.

Why We Like This
The kit is an exact replica of the original parts, making it easier to replace or upgrade.
It comes with all the necessary components including cylinders and pistons so you don’t have to search for each part individually.
It’s compatible with multiple part numbers so you don’t have to worry about compatibility issues.
It fits perfectly into Honda TRX400EX models from 1999 – 2008.
The product has a 3 month warranty for replacement or return so you can be sure of its quality.

Common Questions & Answers
Q: Is this product compatible with other Honda models?
A: Unfortunately, this product is only designed for Honda TRX400EX models from 1999 – 2008.

Q: Does this kit include all the necessary components?
A: Yes! This kit includes cylinders and pistons as well as gasket rings for top end installation.

Q: Does the product come with a warranty?
A: Yes! NewJ’s 85mm 400cc Big Bore Cylinder Piston Rings Top End Kit comes with a 3 month free warranty for replacement or return.

Additional Product Information

Length 3.149606296
Width 3.149606296

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 durable top end rebuild kit for your Honda TRX 400EX 1999-2008? Look no further than the Wiseco W5942 Big Bore Replacement Gasket Kit! This gasket kit includes all the necessary gaskets and O-rings to rebuild your top end, allowing you to get back on the road or trail in no time. The kit is sourced in-house to find the most reliable and high quality suppliers available, ensuring a critical seal and superior durability that meets and exceeds OEM specifications.

Why We Like This
Fits Honda XR400 440 Overbore 1996-04, XR400 (87-88mm bore) 1996-05, TRX400EX (87-88mm bore) 1999-08, TRX400X (87-88mm bore) 2009-12
Made from the highest quality materials
Engineered by Wiseco to ensure compatibility with Wiseco pistons and crankshafts
Sourced in house to find the most reliable suppliers available
Meets OEM specifications for superior durability and a critical seal

Common Questions & Answers
Q: Does this kit include all necessary parts?
A: Yes, this kit includes all necessary gaskets and O-rings for rebuilding your top end.
Q: Is this compatible with other brands of pistons or crankshafts?
A: Yes, this gasket kit is engineered by Wiseco to ensure compatibility with Wiseco pistons and crankshafts.
Q: Does this meet OEM specifications?
A: Yes, this gasket kit meets OEM specifications for superior durability and a critical seal.

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 a great way to increase performance and throttle response on your 1999-13 Honda 400EX ATV. It comes with 416, 426, 440, and 460 cc big bore stroker custom performance stage 1-3 carburetor jetting. The 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, carb cleaning procedure, proper tuning techniques and step by step instructions with photos.

It is an easy installation that requires only basic hand tools and we offer full support and instructions. You will be sure to experience increased performance at all RPM’s as well as faster throttle response without the risk of exhaust popping which can damage engines.

Why We Like This
Increased Performance at all RPM’s
Faster Throttle Response
Stops Lean Exhaust Popping that Damages Engines
Easy Installation with Basic Hand Tools
Full Support and Instructions Included

Common Questions & Answers
Q: Is the 6 Sigma Carb Jet Kit easy to install?
A: Yes! The kit comes with complete instructions for installation and only requires basic hand tools. We offer full support and instructions for installation as well.
Q: Does the 6 Sigma Carb Jet Kit stop exhaust popping?
A: Yes! One of the key features is that it stops lean exhaust popping which can damage engines.
Q: Is there a satisfaction guarantee?
A: Yes! We give a 100% satisfaction guarantee upon installation – if you are not happy with the results we will give you a full refund.

Additional Product Information

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

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Are you looking for an easy-to-install top end gasket for your Honda TRX400EX, TRX 400EX, or 440? Look no further than the Labwork New 89MM Big Bore Top End Gasket! This quality kit is perfect for getting your old ATV screaming again and making sure you rebuild it right the first time. With exact items you will receive pictured, you can trust that you are getting exactly what you need.

Why We Like This
Easy to install no manual needed!
Perfect for rebuilding your ATV
Quality kit with exact items pictured
Replacement for Honda TRX400EX, TRX 400EX, or 440
Get your old ATV screaming again

Common Questions & Answers
Q: Does this come with instructions?
A: No, this does not come with instructions; however it is easy to install and should not require any further direction.
Q: Is this compatible with other models of Honda ATV?
A: Yes, this is compatible with other models of Honda ATV including the TRX400EX, TRX 400EX and 440.
Q: What will I receive when ordering this gasket?
A: When ordering this gasket kit, you will receive exactly what is pictured in the product description.

Additional Product Information

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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Finding the right parts for your Honda TRX400EX can be challenging, but with the Top Notch Parts Replacement Big Bore Cylinder Complete Head Polished Ports Performance Camshaft, you don’t have to worry. This kit comes with all of the parts needed to complete your build and offers a 15% increase in power. The head has been polished for improved airflow and the camshaft is designed to work well with standard and big bore kits up to 440cc. With this kit, you get everything you need to improve your Honda TRX400EX.

Why We Like This
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
Complete head and performance camshaft for Honda TRX 400EX
Offers 15% increase in power
Includes 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
Comes with fuel filter, air filter and oil filter plus a free NGK spark plug

Common Questions & Answers
Q: Is this camshaft compatible with standard and big bore kits up to 440cc?
A: Yes! This camshaft is designed to be compatible with both standard and big bore kits up to 440cc.
Q: Does this kit come with all of the necessary parts?
A: Yes! This kit comes complete with all of the necessary parts including a piston, piston pin, circlips and much more.
Q: What kind of increase in power can I expect?
A: You can expect a 15% increase in power when using this camshaft.

Additional Product Information

Benefits of Best 440 Big Bore Kit 400Ex

1. Increased Horsepower: The Best 440 Big Bore Kit 400Ex provides a significant increase in horsepower and torque, allowing for more powerful and efficient performance.

2. Improved Top-End Speed: The Best 440 Big Bore Kit 400Ex increases the top-end speed of the ATV, making it capable of reaching higher speeds with ease.

3. Enhanced Reliability: The Best 440 Big Bore Kit 400Ex is designed to provide reliable performance even under high-stress conditions, making it an ideal choice for long off-road trips or prolonged riding sessions.

4. Improved Fuel Efficiency: The Best 440 Big Bore Kit 400Ex promotes improved fuel efficiency, allowing riders to enjoy longer rides without worrying about running low on fuel too quickly.

5. Easy Installation: The Best 440 Big Bore Kit 400Ex is designed to be easy to install, allowing riders to get back on the trails quickly and without complications.

Buying Guide for Best 440 Big Bore Kit 400Ex

What is a Big Bore Kit?
A Big Bore Kit is an upgrade that increases the displacement of your engine. It typically replaces the stock cylinder, piston, and head to increase the engines power output. It is most commonly used on four-stroke engines, and can provide a significant increase in power and torque.

Benefits of Installing a 440 Big Bore Kit 400Ex
Installing a 440 Big Bore Kit 400EX on your ATV can provide a number of benefits, including increased power and torque, improved fuel efficiency, better acceleration, and more. It can also extend the lifespan of your ATVs engine by reducing wear and tear caused by high-performance riding.

Factors to Consider When Buying a 440 Big Bore Kit 400Ex
When choosing a Big Bore Kit for your ATV, there are several factors to consider. The first is compatibility: make sure that the kit you choose is compatible with your ATV model and year. The second is quality: look for kits made with high-quality parts that will last for years to come. Finally, consider price: while its important to get quality parts, you want to make sure you dont overspend.

Choosing the Right Brand
When it comes to buying a 440 Big Bore Kit 400EX, there are several brands available on the market. Some of the most popular brands include CP Pistons, ProX Racing Parts, Vertex Pistons, Wossner Pistons, Wiseco Pistons, and Hot Rods Racing Parts. Each brand offers different features and benefits so make sure you do your research before making a purchase.

Installation Considerations
Installing a 440 Big Bore Kit 400EX is not something you should attempt without professional help. You should also keep in mind that installation will require precise measurements in order to ensure proper fitment so its best to leave this job up to experienced professionals who have knowledge of your ATV model and year.

In conclusion, the Best 440 Big Bore Kit 400Ex is a great upgrade for those looking to increase their ATVs performance. It is a reliable and easy to install kit that will give your 400EX more power and torque. With its increased displacement and improved cylinder head design, it provides an excellent balance of power and reliability. The kit also includes all necessary components for installation, making it an ideal choice for anyone looking to make the most out of their 400EX.

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