BFO SF2DZI Cylinder Head Kit ATC70 70CC 50CC

( Brand: Bfo ), ( Manufacturer Part Number: SF2DZI ), ( Bundle Listing: Yes ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Compatible Make: For Honda ), ( Compatible Model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65 ), ( Engine: 50cc, 70cc ), ( Engine Type: 4-stroke ), ( Exhaust Valve Outside Diameter: 20mm ), ( Fit 1: For Honda 50cc Large Bore ), ( Fit 2: For Honda 70cc Small Bore Cylinder ), ( Fit For: For Domed 50cc Or Flat Top 70cc ), ( 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 Kit Fit Honda 70cc 50cc fits CRF70 XR70 CT70 C70 TRX70 S65

Introducing the BFO SF2DZI Cylinder Head Kit, an excellent upgrade solution for various Honda CRF models, including the CRF70, XR70, CT70, C70, ATC70, and TRX70, as well as the S65 and 70cc and 50cc versions. This cylinder head kit is designed to provide enhanced performance and reliability for your Honda dirt bike or quad.

The BFO SF2DZI Cylinder Head Kit is an OEM-quality replacement that features a redesigned combustion chamber for improved combustion efficiency. The kit includes a new cylinder head gasket, camshaft, and camshaft bearings, ensuring a perfect seal and smooth operation.

One of the most notable features of this cylinder head kit is the inclusion of the SF2DZI intake port design. This advanced port design provides superior airflow and increased power output, resulting in improved throttle response and overall performance. The SF2DZI intake ports have been tested and proven to provide significant gains in power, making this an ideal upgrade for riders seeking more power from their Honda engine.

Another advantage of the BFO SF2DZI Cylinder Head Kit is its compatibility with various aftermarket performance parts, such as high-performance camshafts and exhaust systems. This makes it an excellent choice for riders who are looking to further enhance the performance of their Honda engine.

The BFO SF2DZI Cylinder Head Kit is manufactured using high-quality materials and precise manufacturing processes to ensure a perfect fit and reliable operation. Each kit includes all necessary hardware and instructions for a straightforward installation process.

Upgrading your Honda CRF or ATV with the BFO SF2DZI Cylinder Head Kit is an investment in both performance and reliability. This kit is designed to provide better combustion efficiency, improved airflow, and increased power output, making it an essential upgrade for any serious off-road rider. With its OEM-quality construction, compatibility with aftermarket performance parts, and straightforward installation process, the BFO SF2DZI Cylinder Head Kit is the perfect choice for those seeking to enhance the performance of their Honda engine.

Buying a BFO SF2DZI Cylinder Head Kit for Honda CRF70, XR70, CT70, C70, AT70, TRX70, S65, and 70cc/50cc: Pros, Cons, and Conclusion

The BFO SF2DZI Cylinder Head Kit is a popular upgrade for various Honda mini bikes including CRF70, XR70, CT70, C70, AT70, TRX70, S65, and 70cc/50cc models. This kit offers several benefits, but it also comes with some potential drawbacks. In this article, we'll discuss the pros and cons of investing in a BFO SF2DZI Cylinder Head Kit for your Honda mini bike.

1. Increased power: The primary reason for purchasing a BFO SF2DZI Cylinder Head Kit is to enhance the performance of your mini bike. This kit includes high-performance components such as a new cylinder head, piston, and camshaft, which can lead to increased horsepower and torque.

2. Improved throttle response: The new components in the BFO SF2DZI Cylinder Head Kit can provide smoother power delivery and improved throttle response, making your mini bike more responsive and fun to ride.

3. Enhanced reliability: The BFO SF2DZI Cylinder Head Kit is designed to improve the overall reliability of your mini bike's engine. The new components are manufactured to higher standards, ensuring they last longer than the original parts.

4. Better fuel efficiency: The increased power and improved engine efficiency offered by the BFO SF2DZI Cylinder Head Kit can result in better fuel economy.

5. Cosmetic appeal: The BFO SF2DZI Cylinder Head Kit comes with a new, polished cylinder head, which can give your mini bike a more attractive appearance.

1. Cost: The BFO SF2DZI Cylinder Head Kit is a substantial investment, and the cost may be a deterrent for some riders.

2. Installation difficulty: Installing the BFO SF2DZI Cylinder Head Kit can be a complex and time-consuming process. It may require specialized tools and a high level of mechanical skill.

3. Potential for increased noise: The high-performance components in the BFO SF2DZI Cylinder Head Kit can lead to increased engine noise. This may not be a concern for all riders, but it is something to consider.

4. Potential for decreased fuel economy: While the BFO SF2DZI Cylinder Head Kit can improve fuel economy in some cases, it can also lead to decreased fuel economy due to the increased power demands.

The BFO SF2DZI Cylinder Head Kit offers several advantages for riders of Honda mini bikes, including increased power, improved throttle response, enhanced reliability, better fuel efficiency, and a cosmetic appeal. However, it also comes with some potential drawbacks, such as cost, installation difficulty, potential for increased noise, and potential for decreased fuel economy.

If you are an avid rider looking to maximize the performance of your Honda mini bike and are willing to invest the time and money required for installation, the BFO SF2DZI Cylinder Head Kit is an excellent choice. However, if you are a casual rider or are concerned about the cost or installation complexity, you may want to consider other upgrades or wait until you have more experience and resources to tackle this project. Ultimately, the decision to purchase a BFO SF2DZI Cylinder Head Kit depends on your riding style, budget, and mechanical abilities.

Details:

This head will only work with DOMED pistons. For Honda S65. For Honda TRX70. Compare the Combustion Chamber Size shown below, to your current head.

This head will only work with FLAT TOP pistons. PRODUCT DISPLAY Cylinder Head Kit Fit for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 70cc 50cc. Guaranteed, Fitment Always the correct part. Fast Shipping.

Telephone number. Cylinder Head for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 50cc Large Bore / 70cc Small.

part #: sf2dzi prices

• $19.99-$48.79

specifications cylindermotorcycleiz:

• for models: Crf70, Xr70, Ct70, C70, Trx70, S65
• for makes: Honda
• brand: Bfo
• mpn: Sf2dzi
• bundle listing: Yes
• california prop 65 warning: California Prop 65 Warning
• compatible make: For Honda
• compatible model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65
• engine: 50cc, 70cc
• engine type: 4-stroke
• exhaust valve outside diameter: 20mm
• fit 1: For Honda 50cc Large Bore
• fit 2: For Honda 70cc Small Bore Cylinder
• fit for: For Domed 50cc Or Flat Top 70cc
• 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

shipping cylindermotorcycleiz:

• service: FedEx Ground / FedEx Home Delivery
• class: Standard
• transit: 3-6 Days
• carrier: FedEx
• cost: $0.00
• type: Fixed

payments cylindermotorcycleiz:

• wallet: Google-pay
• other
• credit card: Diners-club

seller cylindermotorcycleiz:

• # reviews: 2166
• rating: 99.1%
• city: Elk Grove Village, Illinois

offer cylindermotorcycleiz:

• sold: 0
• availability: In Stock
• started: October 19, 2025
• options: Ship-to-home
• best offers: True

returns cylindermotorcycleiz:

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

general cylindermotorcycleiz:

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

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