BFO PTN9XI Top Cylinder Piston Gasket End Rebuild Set 50CC QT50

( 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: PTN9XI ), ( 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 )

Review BFO 50cc Cylinder Piston Gasket Top End Rebuild Set Yamaha fits PW50 1979–1987

BFO PTMN9XI 50cc Cylinder Piston Gasket Top End Rebuild Set for Yamaha PW50/QT50 (1979-1987)

The BFO PTMN9XI 50cc Cylinder Piston Gasket Top End Rebuild Set is an essential kit for those looking to restore the top end of their Yamaha PW50 or QT50 engine models manufactured between 1979 and 1987. This comprehensive rebuild kit includes all the necessary gaskets required to complete a successful top end rebuild project.

1. Cylinder Head to Cylinder Gasket: This gasket seals the connection between the cylinder head and the engine cylinder. It ensures a proper compression seal and prevents coolant or oil leakage.

2. Piston to Cylinder Gasket: This gasket forms a seal between the piston and the engine cylinder. It is crucial for maintaining compression and preventing oil or coolant leakage.

3. Timing Cover to Engine Block Gasket: This gasket seals the connection between the timing cover and the engine block. It prevents oil leakage and ensures proper sealing of the crankcase.

4. Crankshaft Main Journal Bearing Gasket: This gasket seals the connection between the crankshaft and the engine block, ensuring a proper seal and preventing oil leakage.

5. Timing Marker Gasket: This gasket seals the connection between the timing cover and the engine block, ensuring accurate timing mark alignment.

6. Oil Pump Gasket: This gasket seals the connection between the oil pump and the engine block, ensuring proper oil flow and preventing oil leakage.

All gaskets in this set are carefully manufactured to ensure a perfect fit and sealing performance. They are made from high-quality materials that can withstand the rigors of motorcycle use. By using this rebuild set, you can restore the top end of your Yamaha PW50 or QT50 engine with confidence, knowing that you have used the best possible gaskets for the job.

In summary, the BFO PTMN9XI 50cc Cylinder Piston Gasket Top End Rebuild Set is an essential kit for anyone looking to restore the top end of their Yamaha PW50 or QT50 engine manufactured between 1979 and 1987. This comprehensive set includes all the necessary gaskets required to ensure a successful and leak-free rebuild project.

Buying a BFO Ptn9xi 50cc Cylinder Piston Gasket Top End Rebuild Set for Yamaha PW50/Qt50 (1979-1987): Pros, Cons, and Conclusion

The BFO Ptn9xi 50cc cylinder piston gasket top end rebuild set is a popular choice among Yamaha PW50 and Qt50 owners for restoring their engines. In this analysis, we will discuss the advantages and disadvantages of purchasing this rebuild kit to help you make an informed decision.

1. Comprehensive: The BFO Ptn9xi rebuild set includes all the necessary gaskets, piston rings, and seals required for a top-end rebuild. This saves time and money by eliminating the need to purchase individual components.

2. High-quality: BFO is known for manufacturing high-quality gasket sets, ensuring a proper seal and reducing the likelihood of leaks.

3. Easy installation: The gaskets are pre-cut and come with precise instructions, making the installation process straightforward for most DIY enthusiasts.

4. Affordability: Compared to the cost of a professional rebuild or buying each component individually, the BFO Ptn9xi rebuild set is a cost-effective solution.

1. Fitment concerns: Ensure that the gaskets in the kit fit perfectly with your engine model. While BFO is a reputable brand, there have been isolated reports of misfit gaskets.

2. Availability: Depending on your location, it may take some time for the kit to arrive. Make sure to order well in advance to avoid any potential delays.

3. Limited engine coverage: The BFO Ptn9xi rebuild set is specifically designed for the Yamaha PW50 and Qt50 models from 1979 to 1987. If you have a different engine model, you may need to look for an alternative rebuild kit.

The BFO Ptn9xi 50cc cylinder piston gasket top end rebuild set offers several advantages, such as comprehensive coverage, high-quality components, ease of installation, and affordability. However, it also has some potential downsides, like fitment concerns, availability issues, and limited engine coverage.

If you own a Yamaha PW50 or Qt50 from the specified model years and are in need of a top-end rebuild, the BFO Ptn9xi rebuild set is an excellent choice due to its comprehensive nature and high-quality components. However, make sure to double-check the fitment with the seller or manufacturer before making your purchase. Additionally, consider ordering the kit well in advance to allow for any potential shipping delays.

part # ptn9xi prices

• $28.89-$33.53

specifications atvsienna:

• for makes: Yamaha
• for years: 1979-1987
• 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: PTN9XI
• 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

offer atvsienna:

• started: March 29, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock

shipping atvsienna:

• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• cost: $0.00
• type: Fixed
• transit: 4-8 Days
• carrier: FedEx

seller atvsienna:

• rating: 98.8%
• # reviews: 941

general atvsienna:

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

payments atvsienna:

• wallet: Google-pay
• other
• credit card: Mastercard

returns atvsienna:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

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