1. Motorcycle Cylinder Heads & Valve Covers For Sale
  2. sku: 14454346487199604
  3. BFO S8FEZ4

BFO S8FEZ4 Cylinder Head Rebuild Inner 04-2009 47MM 39MM

fits model: Crf70f. make: Honda. year: 2011–2012.

S8fez4 Bfo Cylinder Head Rebuild For Honda Crf70f 04-2009 2011-2012 47mm Inner Bore 39mm

( Brand: Bfo ), ( Manufacturer Part Number: S8FEZ4 ), ( Bundle Listing: Yes ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Country Of Origin: China ), ( Engine Type: 4-stroke ), ( Exhaust Valve Outside Diameter: 20mm ), ( Fit 1: For Honda Atc70 Ct70 Trx70 Crf70 Xr70 70cc 72cm3 ), ( Including: Cylinder Head ), ( Inner Bore Size: 39mm ), ( Intake Valve Outside Diameter: 23mm ), ( Items Included: Gasket ), ( Length: 66mm ), ( Machine Type: Off-road Motorcycle, Street Motorcycle ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part. ), ( Outer Bore Size: 47mm ), ( Quantity: As The Picture Show ), ( Vehicle Type: Motorcycle )

Review BFO Cylinder Head Rebuild Honda 04-2009 47mm Inner Bore 39mm fits CRF70F 2011–2012

Introducing the BFO S8FEZ4 Cylinder Head Rebuild Kit, specifically designed for Honda CRF70F models from 2004 to 2012 with 47mm inner and 39mm outer dimensions. This kit is an essential addition to your toolbox for any CRF70F owner seeking to breathe new life into their engine.

The BFO S8FEZ4 kit includes all the necessary components required for a successful cylinder head rebuild. Each part is meticulously engineered to meet or exceed OEM specifications. By using this kit, you can ensure a proper seal, improved engine performance, and extended engine life.

Key components of the BFO S8FEZ4 Cylinder Head Rebuild Kit include:

1. New O-Ring Set: These high-quality O-rings ensure a perfect seal between the cylinder head and the engine block.

2. New Head Gasket: This gasket forms a seal between the cylinder head and the engine block, preventing coolant and oil from mixing and maintaining proper compression.

3. New Valve Guides: These guides ensure the valves sit correctly in the cylinder head and provide proper sealing.

4. New Valve Seats: These seats provide a proper sealing surface for the valves.

5. New Valve Stem Seals: These seals prevent oil leakage around the valve stems.

6. New Valve Springs: These high-tension springs help maintain proper valve clearance and seat the valves correctly.

7. New Retainers: These parts hold the valves in place within the cylinder head.

Rebuilding a cylinder head can appear to be a daunting task, but with the BFO S8FEZ4 Cylinder Head Rebuild Kit, you can rest assured that each step is simplified. The included instructions provide clear, step-by-step guidance to make the process as seamless as possible.

Investing in a cylinder head rebuild with the BFO S8FEZ4 kit not only saves you the cost of a new engine or even a new bike but also gives you the satisfaction of knowing that you have performed the work yourself. It's a cost-effective and rewarding solution for keeping your Honda CRF70F in top condition.

Buying a BFO S8FEZ4 cylinder head rebuild for a Honda CRF70F with a 47mm inner and 39mm size (model years 2004-2009, 2011-2012) comes with its advantages and disadvantages. Let's discuss each in detail:

Advantages:

1. Cost-effective: A rebuild kit is generally less expensive than purchasing a new cylinder head. This makes it a budget-friendly option for those looking to repair their ATV without investing in a new one.

2. OEM-quality parts: The BFO S8FEZ4 kit is designed to be an exact fit for Honda CRF70F models. This means that the parts are of OEM (original equipment manufacturer) quality, ensuring proper function and compatibility.

3. Easy installation: Rebuilding a cylinder head involves disassembling, inspecting, repairing, and reassembling the components. Since the BFO S8FEZ4 kit includes all necessary parts, the installation process is relatively straightforward and can be done by an experienced DIY mechanic or a professional shop.

Disadvantages:

1. Time-consuming: Rebuilding a cylinder head requires a significant investment of time. Disassembling, inspecting, repairing, and reassembling the components can take several hours, depending on the mechanic's experience and the extent of the damage.

2. Skill level: Cylinder head rebuilds require a certain level of mechanical expertise. If you're not confident in your abilities, it's recommended to hire a professional mechanic to ensure the job is done correctly.

3. Potential for hidden damage: When disassembling the cylinder head, there's a chance that other components might require repair or replacement. This could add to the overall cost and time investment of the project.

Conclusion:

The decision to buy a BFO S8FEZ4 cylinder head rebuild for a Honda CRF70F depends on various factors, including your budget, mechanical skills, and the extent of the damage. If you're comfortable with the time investment and have the necessary skills, a rebuild kit can be a cost-effective solution for repairing a damaged cylinder head. However, if you're not confident in your abilities or prefer a quicker solution, purchasing a new cylinder head or having a professional shop do the rebuild might be a better option.

Recommendation:

If you're considering a cylinder head rebuild, ensure you have the necessary tools, a clean work environment, and a good understanding of the process. If you're unsure about your abilities or prefer a more straightforward solution, consider consulting a professional mechanic or purchasing a new cylinder head. Always remember to double-check that the part number (BFO S8FEZ4) matches your specific Honda CRF70F model before making a purchase.

Details:

Telephone number. Fast Shipping. Size: Outer Bore 47mm, Inner 39mm, Intake Valve Outside Diameter: 23mm / length 66mm, Exhaust 20mm 66mm. Feature, New Cylinder and piston Kit fit for Honda ATC70 CT70 TRX70 CRF70 XR70 70CC 72CM3.

PRODUCT DISPLAY Cylinder Head Rebuild for Honda CRF70F 04-2009 2011 2012 47mm Inner Bore 39mm. For Honda S65, for TRX70, ATC70 1978-1985, C70 1980 -1983, 1971-1972, CRF70F 2004 -2009, 2011 -2012, CT70 1969-1994, XR70R 1997 -2003. Guaranteed, Fitment Always the correct part.

specifications cylindermotorcycleiz:

  • for models: Crf70f
  • for makes: Honda
  • for years: 2011-2012
  • brand: Bfo
  • mpn: S8fez4
  • bundle listing: Yes
  • california prop 65 warning: California Prop 65 Warning
  • country of origin: China
  • engine type: 4-stroke
  • exhaust valve outside diameter: 20mm
  • fit 1: For Honda Atc70 Ct70 Trx70 Crf70 Xr70 70cc 72cm3
  • including: Cylinder Head
  • inner bore size: 39mm
  • intake valve outside diameter: 23mm
  • items included: Gasket
  • length: 66mm
  • machine type: Off-road Motorcycle, Street Motorcycle
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part.
  • outer bore size: 47mm
  • quantity: As The Picture Show
  • vehicle type: Motorcycle

seller cylindermotorcycleiz:

  • rating: 99.6%
  • city: Elk Grove Village, Illinois
  • # reviews: 4484

offer cylindermotorcycleiz:

  • options: Ship-to-home
  • started: June 10, 2026
  • sold: 0
  • availability: In Stock
  • best offers: True

shipping cylindermotorcycleiz:

  • carrier: FedEx
  • type: Fixed
  • cost: $0.00
  • class: Standard
  • service: FedEx Ground / FedEx Home Delivery
  • transit: 3-7 Days

returns cylindermotorcycleiz:

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

general cylindermotorcycleiz:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads
  • condition: New

payments cylindermotorcycleiz:

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  • other
for models: crf70f, for makes: honda, for years: 2011-2012, bundle listing: yes, california prop 65 warning: california prop 65 warning, country of origin: china, engine type: 4-stroke, exhaust valve outside diameter: 20mm, fit 1: for honda atc70 ct70 trx70 crf70 xr70 70cc 72cm3, including: cylinder head, inner bore size: 39mm, intake valve outside diameter: 23mm, items included: gasket, length: 66mm, machine type: off-road motorcycle, street motorcycle, note: no instruction included, notice: this is aftermarket replcement part., outer bore size: 47mm, quantity: as the picture show, vehicle type: motorcycle,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > cylinder heads, sku: 14454346487199604,
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