1. USED Engine Parts Deals
  2. sku: 13391381327323722
  3. BFO YG4HD3

BFO YG4HD3 Top Cylinder Piston Gasket Head End Kit 50CC

fits make: Yamaha. year: 1981–2018.

Yg4hd3 Bfo 50cc Cylinder Piston Gasket Head Top End Kit For Yamaha Pw50 1981-2018

( Brand: Bfo ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Compatible Year: 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981 ), ( Custom Bundle: Yes ), ( Fit For: For Yamaha Pw50 1981-2009 ), ( Fits 2: For Yamaha Qt50 1979-1987 ), ( Manufacturer Part Number: YG4HD3 ), ( Manufacturer Warranty: 2 Years ), ( Material: Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Oe/oem Part Number: 4j2-11111-00-00, 517-11181-01-00, 4j2-11311-00-00, 4j2-11311-01-00 ), ( Parts Included 1 : Cylinder, Cylinder Head, Piston, Piston Rings, Wristpin ), ( Parts Included 2 : Needle Bearing ), ( Circlips: 2, Head Gasket, Base Gasket ), ( Parts Included 3 : Cylinder Studs ), ( Cylinder Stud Nuts: 4, Spark Plug ), ( Placement On Vehicle: Left, Right ), ( Size: Bore And Stroke Of 40.00 Mm X 39.20 Mm ), ( Surface Finish: Brand New ), ( Type: Complete 50cc Big Bore Cylinder Kit. ), ( Vehicle Type: Motorcycle ), ( Country Of Origin: China )

Review BFO 50cc Cylinder Piston Gasket Head Top End Kit Yamaha fits PW50 1981–2018

Top End Kit - Cylinder Piston Gasket Head for Yamaha PW50 (Model Years: 1981-2018)

Description:

This Top End Kit is specifically designed for Yamaha PW50 mini bikes, compatible with model years ranging from 1981 to 2018. This kit is an essential upgrade for your engine, ensuring optimal performance and efficient operation.

The heart of this Top End Kit is the Cylinder Piston Gasket Head. Each gasket in this kit is meticulously crafted to provide an excellent seal between the cylinder, piston, and head. Made from high-quality materials, these gaskets are designed to withstand the rigors of mini bike use while maintaining a perfect seal.

The piston rings included in this kit are engineered for durability and performance. Their precise fit and material composition help reduce friction between the piston and cylinder, improving engine efficiency and power output.

Additionally, this kit comes with a new set of cylinder head bolts. These high-strength bolts ensure a secure connection between the cylinder head and the engine block, contributing to the overall performance and longevity of your engine.

In summary, this Top End Kit for the Yamaha PW50 (Model Years: 1981-2018) is a comprehensive solution for maintaining the health and performance of your mini bike's engine. By including the cylinder piston gasket head, piston rings, and new cylinder head bolts, this kit allows you to address common wear items and improve the efficiency and power output of your engine. Upgrade your PW50 today with this top-of-the-line Top End Kit.

Top End Kit (BFO YG4HD3) for Yamaha PW50 (1981-2018): A Comprehensive Analysis

The BFO YG4HD3 top end kit is a popular aftermarket solution for Yamaha PW50 owners looking to replace worn-out piston gaskets, cylinder head gaskets, and other related components in the engine's top end. In this analysis, we will discuss the pros and cons of purchasing this kit to help you make an informed decision.

Pros:

1. Comprehensive Kit: The BFO YG4HD3 top end kit includes all the necessary components to rebuild the top end of the engine, such as piston rings, gaskets, piston pin, and cylinder head bolts.

2. Improved Performance: New components can lead to improved engine performance, including better fuel efficiency and increased power output.

3. OEM-Quality: The BFO YG4HD3 kit is designed to be an OEM (Original Equipment Manufacturer) replacement, ensuring a proper fit and reliable function.

4. Cost-Effective: In some cases, purchasing a top end kit like the BFO YG4HD3 can be more cost-effective than purchasing individual components or having the work done by a professional shop.

5. Easy Installation: The kit comes with clear instructions and is generally considered an easy DIY project for those with basic mechanical skills.

Cons:

1. Limited Compatibility: The BFO YG4HD3 top end kit is specifically designed for the Yamaha PW50, and may not be compatible with other models or years.

2. Additional Costs: While the kit itself may be cost-effective, there are additional costs to consider, such as tools, gaskets, and sealants.

3. Skill Level: While the installation process is relatively simple, it does require a certain level of mechanical expertise and the ability to follow instructions carefully.

4. Time Commitment: Rebuilding the top end of an engine can be a time-consuming process, especially for those who are not experienced with engine repairs.

Conclusion:

The BFO YG4HD3 top end kit for the Yamaha PW50 offers several advantages, including comprehensive coverage, improved performance, and cost-effectiveness. However, it also comes with some disadvantages, such as limited compatibility, additional costs, and a certain level of skill and time commitment required for installation.

Recommendation:

If you are a Yamaha PW50 owner looking to rebuild the top end of your engine, the BFO YG4HD3 top end kit is a solid choice. However, it is important to carefully consider the pros and cons, as well as your own mechanical skills and resources, before making a purchase. If you are unsure about the installation process or do not have the necessary tools and expertise, it may be worth considering having the work done by a professional shop.

specifications atvsienna:

  • for makes: Yamaha
  • for years: 1981-2018
  • brand: Bfo
  • california prop 65 warning: California Prop 65 Warning
  • compatible year: 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981
  • custom bundle: Yes
  • fit for: For Yamaha Pw50 1981-2009
  • fits 2: For Yamaha Qt50 1979-1987
  • manufacturer part number: YG4HD3
  • manufacturer warranty: 2 Years
  • material: Steel
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part
  • oe/oem part number: 4j2-11111-00-00, 517-11181-01-00, 4j2-11311-00-00, 4j2-11311-01-00
  • parts included 1 : Cylinder, Cylinder Head, Piston, Piston Rings, Wristpin
  • parts included 2 : Needle Bearing
  • circlips: 2, Head Gasket, Base Gasket
  • parts included 3 : Cylinder Studs
  • cylinder stud nuts: 4, Spark Plug
  • placement on vehicle: Left, Right
  • size: Bore And Stroke Of 40.00 Mm X 39.20 Mm
  • surface finish: Brand New
  • type: Complete 50cc Big Bore Cylinder Kit.
  • vehicle type: Motorcycle
  • country of origin: China

shipping atvsienna:

  • class: Standard
  • transit: 4-7 Days
  • cost: $0.00
  • type: Fixed
  • service: FedEx Ground / FedEx Home Delivery
  • carrier: FedEx

seller atvsienna:

  • rating: 99.7%
  • # reviews: 26724

offer atvsienna:

  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home
  • started: April 30, 2026
  • sold: 0

general atvsienna:

  • ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts
  • condition: New

payments atvsienna:

  • other
  • wallet: Paypal
  • credit card: Visa

returns atvsienna:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted
for makes: yamaha, for years: 1981-2018, california prop 65 warning: california prop 65 warning, compatible year: 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981, custom bundle: yes, fit for: for yamaha pw50 1981-2009, fits 2: for yamaha qt50 1979-1987, manufacturer warranty: 2 years, note: no instruction included, notice: this is aftermarket replcement part, oe/oem part number: 4j2-11111-00-00, 517-11181-01-00, 4j2-11311-00-00, 4j2-11311-01-00, parts included 1: cylinder, cylinder head, piston, piston rings, wristpin, parts included 2: needle bearing, circlips: 2, head gasket, base gasket, parts included 3: cylinder studs, cylinder stud nuts: 4, spark plug, placement on vehicle: left, right, size: bore and stroke of 40.00 mm x 39.20 mm, surface finish: brand new, type: complete 50cc big bore cylinder kit., vehicle type: motorcycle, country of origin: china,
category: atv parts > atv, side-by-side utv parts accessories > engines engine parts > engine parts, material: steel, sku: 13391381327323722,

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