SKU: 44361913532

1991 Honda ATV TRX300 Cylinder Piston Top End Gasket Kit 12000-HC4-000 12251-HA0-004

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Description

1991 Honda ATV TRX300 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]
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SKU: 44361913532

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4.4 ★★★★★
Based on 11 reviews
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B
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Beach Lover (Sue)
Dallas, US
★★★★★ 5
Pup loves this!
Color: Blue Puppy, Size: Medium Size 2
My pup loves his soccer balls. These are very durable although if you have a dog that doesn't grasp the concept of using the loops/straps to carry it, teeth could puncture it. They are a good value for the money if your dog likes to chase the ball, I get the smaller size ball for my dog (medium dog). They come with a pump but if you have a bicycle pump or a battery operated pump, it will fill much faster. Ours stay outside and even in the winter, they hold up well, just need a bit more air occasionally to keep it pumped up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
N
Verified Purchase
Natalie
Grantham, US
★★★★★ 5
Strong Toy
Color: Blue Puppy, Size: Medium Size 2
My dog loves this toy and lasted months. Just ordered a new one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
G
Verified Purchase
Geege
Waukegan, US
★★★★★ 3
Well that didn't last long!
Color: Blue Puppy, Size: Medium Size 2
He loved it for the 15 minutes it took to destroy it! Cute design, but the material was thin enough to penetrate with his teeth and it was all over in a very short time! He still carries the carcass around and tries to play with it...it's sad. Definitely not for strong chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
A
Verified Purchase
Ash
Carnegie, US
★★★★★ 4
Decent ball
Color: Blue Puppy, Size: Medium Size 2
Context: I have a busy, anxious Corgi. I like that it came with a pump to air it up. My dog likes the tag feature on it which made the ball easy to carry. She chewed off the tags pretty quick. She didn’t like herding this one as much. She prefers herding a basketball over this ball. The ball sits in the backyard through all the weather and elements and has held up pretty well. We’ve had it about a year and it’s still a good toy.
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Reviewed in the United States on April 10, 2026
P
Verified Purchase
Pamela G
Belleville, US
★★★★★ 1
Easily Ripped apart within minutes
Color: Blue Puppy, Size: Medium Size 2, Color: Blue Puppy, Size: Medium Size 2
I have a new foster who’s only 35 pounds not an aggressive chewer and loves to play with my dogs rooster soccer ball toy but the ball itself is a little big for her to get her teeny little mouth around when she’s trying to carry and run with it this happened to pop up on my feed a size smaller (medium, instead of large ) and available for next day delivery, so I bought it specifically for the little dog to play with. I gave it to her to play outside while my hound is busy playing with one of her toys I went about watering the garden, when I turned around a few minutes later, I saw the ball appeared to be completely flattened. As I walked over, I saw pieces of black rubber on the ground, and then the rest of the ball had a gaping hole in it. The rooster version of the ball that I bought from another seller has been going strong for months with multiple dogs playing with it and chewing on it and ripping the side ribbons apart so either I got a defective toy or the quality of manufacturer from this seller is much lower since the durability of the ball seems to be less than an hour.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 24, 2025

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