SKU: 31524006154

1996 Honda ATV TRX300FW FOURTRAX 4X4 Cylinder Piston Top End Gasket Kit 12000-HC4-000 12251-HA0-004

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Description

1996 Honda ATV TRX300FW FOURTRAX 4X4 Cylinder Piston Top End Gasket Kit 12000-HC4-000 12251-HA0-0041988 2000 Honda TRX300 Fourtrax FW 4x4 2x4 Cylinder Piston Top End Gasket Kit Features: Kit includes cylinder, spark plugs, oil filter, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured). Cast piston has super high silicone content for additional strength. Piston skirts are Molybdenium Teflon coated to minimize resistance wear and provide extended life. Piston dome is anodized for superior heat resistance and longer

1988-2000 Honda TRX300 Fourtrax FW 4x4 2x4 Cylinder Piston Top End Gasket Kit

Features:
Kit includes cylinder, spark plugs, oil filter, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured).
Cast piston has super-high silicone content for additional strength.
Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life.
Piston dome is anodized for superior heat resistance and longer lifespan.
The gaskets use performance materials to increase durability and provide greater reliability.
Includes all gaskets pictured to rebuild top end.
Kit is for standard bore size - 74.00 mm.
All of the components within this kit are bolt-on ready for a hassle free installation.

Specifications:
Condition: Aftermarket 100% Brand New
Quantity: 1 Set
Cylinder Material: High-Grade Cast Aluminum
Piston Material: Forged Aluminum
Bore Size: STD 74.00mm
Spark Plug Dimension:
Thread Diameter: 12mm
Thread Length: 19mm
Electrode Gap:0.9mm

Replacement Part Number:
Cylinder: 12000-HC4-000, 12100-HC4-000
Cylinder head gasket: 12251-HA0-004
Cylinder base gasket: 12191-HC4-900
Cylinder o-ring(78.3x2mm): 91304-HA0-003
Valve tappet cover o-rings(57x3mm): 12392-HC4-005
Cylinder o-ring(33.7x2.4mm): 91305-HA0-680 (Sits Between Cylinder and Intake Manifold)
Intake pipe gasket: 18291-MN4-920
Valve stem seals: 12209-KL4-005
Oil filter: 15412-HM5-A10

FITMENT:
Fit for Honda TRX 300 2x4 & 4x4 FW four-wheelers 1988-2000
(This is for the Utility Model ATVs with the rack on the front and the back, NOT the race model ATVs)

Fit for 1988 Honda ATV TRX300 FOURTRAX 300
Fit for 1988 Honda ATV TRX300FW FOURTRAX 4X4
Fit for 1989 Honda ATV TRX300 FOURTRAX
Fit for 1989 Honda ATV TRX300FW FOURTRAX 4X4
Fit for 1990 Honda ATV TRX300
Fit for 1991 Honda ATV TRX300
Fit for 1991 Honda ATV TRX300FW
Fit for 1992 Honda ATV TRX300
Fit for 1992 Honda ATV TRX300FW
Fit for 1993 Honda ATV TRX300
Fit for 1993 Honda ATV TRX300FW
Fit for 1994 Honda ATV TRX300
Fit for 1994 Honda ATV TRX300FW
Fit for 1995 Honda ATV TRX300
Fit for 1995 Honda ATV TRX300FW 4X4
Fit for 1996 Honda ATV TRX300 FOURTRAX
Fit for 1996 Honda ATV TRX300FW FOURTRAX 4X4
Fit for 1997 Honda ATV TRX300
Fit for 1997 Honda ATV TRX300FW 4X4
Fit for 1998 Honda ATV TRX300
Fit for 1998 Honda ATV TRX300FW 4X4
Fit for 1999 Honda ATV TRX300 FOURTRAX
Fit for 1999 Honda ATV TRX300FW FOURTRAX 4X4
Fit for 2000 Honda ATV TRX300
Fit for 2000 Honda ATV TRX300FW 4X4

Package includes:
1x Cylinder
1x Standard Size Piston
1x Piston Ring Set
1x Wristpin
2x Circlips
1x Oil Filter
1x Cylinder Head Gasket
1x Cylinder Base Gasket
1x Exhaust Gasket
2x Valve Stem Seals
1x Exhaust Gasket
1x Cylinder O-ring(78.3x2mm)
2x Valve Tappet Cover C-rings(57x3mm)
1x Sits Between Cylinder and Intake Manifold O-ring(33.7x2.4mm)
1x Exhaust Pipe Gasket
2x Spark Plug

Note:
Ring end gaps are checked prior to shipment for proper sizing.
Please check out the product and size fits your motorcycle or not before you purchase.

Warranty:
Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
24-Hour Expert Online: Solve your installation and product problems

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31524006154

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4.6 ★★★★★
Based on 1927 reviews
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Product Reviews
J
Verified Purchase
J
Belleville, US
★★★★★ 1
This toy will not hold up
Size: Dog Rope Toy - M
I bought this for my heavy chewer. The plastic pieces lasted about 15 minutes. She is an Italian Mastiff, but she is only 7 months old. I expected more from a toy that was rated as 'tough'.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
B
Verified Purchase
Brad
Fort Morgan, US
★★★★★ 5
Best and toughest dog toy on the market 4 all breeds and sized dogs
Size: Large, Size: Large
Now i know this doesnt appear to be good based off the photos but hear me out. My pitbull (and any pitbull owner will most likley know the same struggle with chew toys) is an extrememly tough ans agressive chewer! Every toy i would purchase for him from rubber ones to rope ones, enormous raw hides, oversized balls thinking it would be hard for him to bite believing that would increase its life, it did not. None of the toys lasted for more than a few HOURS!!! And that was when he was being easy with them! I was on the line of stopping biying him toys and letting him just chew sticks, but then one day in a coversation with my plumber and familt friend he mentioned trying kong brand dog toys. I didnt have anything to lose besides more money and an hour of entertainment for my dog so i decided to try them. I bought 3 different kong brand toys. A tug of war one that was rope with kong rubber grip handled ends, a weird ball like toy that was able to add peanut butter in a small hole and this toy. Amazed the tug of war toy(handles only) even though fairly thin lasted over 3 days!! And thats huuuuge for him with toys. Then the little peanut butter ball thing lasted about a week! I was sold. But then he finally got to try this ball with tug of war handles that contains a tennis ball when it finally is destroyed as a bonus toy and it even squeeks and the swueeker was even guarded by the rubber so it wasnt crushed immediatley! Now afyer seeing the picture of said ball it is destroyed now but it lasted many tug of wars with him and him gnawinf on it for hours every day. The kicker is i bought it roughly around september 16th, it is now JANUARY 21st!!!!! The ball has now lasted him approximately 4months 5days! Thats an insane increse of chew life for any pitbull especially mine. And it ximes in 2 sizes. The large is a little bigger than a large cantelope or slightly smaller than a basketball. And they have a smaller version for small breed heavy chewers!! I couldnt be more pleased with this purchase and will definatley be ordering 3 more ASAP considering his prob only has another week or 2 left. The only negatives are 1, when they do chew off the handles tou cant play tug of war any more and 2 that when they finally get into the main cavity where they can actually start chewing off little bits of it they emd up all over the place, bunchesmof little rubber nubs but its easy to clean. So if you have an extremely heavy chewer as i do and are looking for a toy that is worth the money and will last your dog a good time and that they will love(my dogs fav toy hes ever had) and u want it to squeek and have a bonus toy inside of it to hold them over til the next one arrives when they ruin it, then trust me! BUY KONG CHEW TOYS. specifically THIS TOY!! Best dog brand and toy on the market. Ajd its safe and if im not mistaken harmful chemical and bpa free so ur pups can chew safely. And it cleans their teeth as a bonus because of the tough rubber!! Its so worth it. only recommendation. Buy atleast 1 large 1 and one small one if u have a medium-large dog. If their small then probably only the small one or any other kong toy. If they're light chewers u probably will mever have to buy another chew toy again! Its that good and strong yet still flexible enough to squeek it!! Hope this review helps you and encourages u to buy this toy and brand over any other!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2021
P
Verified Purchase
Paul B.
Lexington, US
★★★★★ 5
Purrrfect for a Pitbull or Am Staff Terrier
Size: Large, Size: Large
Large size Dog: Am Staff about 50-55 lbs She ruin all her toys in less than 3-5 minutes except this one. Again, we use this toys with guidance and support. Cons: Definitely built to last but must not be left unattended because we all know what our pitbull and Am Staff is capable of doing with their teeth. It has many feature, squeaky sections the sensory of the ball inside, weighted, and puncture proof, top and bottom option to carry this dog during a fetch game. Easy to clean. Cons: if left unattended this is not a chewing proof toy for 6-8 hours. That is not what is made for. This is an engagement toy you have to do with your fur friend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
A
Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 5
Entertaining and durable
Size: Large
Great toy and quality. My dog that was a bit of a ruffian with his toys loved this toy. It lasted through his wild days so I bought my current baby one. Unfortunately she hates it. She wants the ball trapped inside but hates the sound of the outer and won't go near it or even let it touch her. Granted she is a bit...eccentric. All larger dogs I have ever seen with one love it. It is very durable. Really serious chewers may need supervision but average big chewers should be fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
K
Verified Purchase
Keith bulldog wilson
Bozeman, US
★★★★★ 5
It is surviving a Mal Pitty and Shepherd
Size: Large
Two handles for them to carry with. Squeaky toy that my shepherd Mal or Pitty hasn’t gotten out so far after five weeks. Plays with it constantly. Starting to see small chunks come out but longest lasting most played with toy they’ve ever had.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026

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