SKU: 89162192059

1988 Honda ATV TRX300FW FOURTRAX 4X4 Cylinder Piston Top End Gasket Kit 12000-HC4-000 12251-HA0-004

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Description

1988 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: 89162192059

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D Rie
Lowell, US
★★★★★ 3
Okay for the price
Size: XX-Large, Color: Denim Blue
The product was light and compact for packing for an Alaska cruise. It was also sufficiently warm and relatively rain resistant. But on the second day of wearing, the zipper blew out. I was able to fix for a short while, but in the end, I couldn’t use it.
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Reviewed in the United States on September 24, 2025
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Pamela Osborne
Pawtucket, US
★★★★★ 5
Good quality stuff
Color: Blue, Size: Large
Great, looking shirt fits well. Great price great company. Great workmanship is the place for shopping at.
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Reviewed in the United States on June 4, 2026
O
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Olga Torres
Alexandria, US
★★★★★ 5
Buena relación calidad - precio .talla L
Color: Blue, Size: Large
Buena calidad - precio , son suaves , se ven modernas , te sirve para el trabajo o una salida ocasional . 5.7 , 165 lbs talla L
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Reviewed in the United States on May 18, 2026
A
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Grantham, US
★★★★★ 4
Quality meets style
Color: White, Size: Large, Color: White, Size: Large
This is an Oxford button-down dress shirt that is a great example of quality craftsmanship paired with classic style. The 50% polyester and 50% cotton fabric has a nice substantial weight to it that feels durable without being too heavy, making it perfect for a polished summer look. The detailed design around the collar adds a subtle touch of casual sophistication, and the chest pocket keeps it practical and versatile. The construction is impressive, with securely attached buttons that reinforce the overall sense of durability. I also appreciated the inclusion of two extra button which is a thoughtful and useful addition. The size large did run a bit snug so I’ll be ordering the next size up. This is a well-made shirt, of a quality-feel material. This brand continues to deliver on both quality and style, and the price feels more than fair for what you’re getting. Overall, a very nice summer dress shirt that I’d gladly recommend.
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Reviewed in the United States on March 30, 2026
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Jim Schuster
Bozeman, US
★★★★★ 3
Good quality but need to be aware.
Color: White, Size: XX-Large
Good quality but know Sizes run small so size up when ordering if you are a US customer. Also chest is tight even when sizing up.
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Reviewed in the United States on June 2, 2026

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