1. Motorcycle Cylinder Heads & Valve Covers For Sale
  2. sku: 14289499683443722
  3. BFO QNEF01

BFO QNEF01 Cylinder Head Kit Performance 70CC 50CC

fits model: Crf70, Xr70, C70. make: Honda. year: 1970.

Qnef01 Bfo Cylinder Head Complete Kit For Honda Crf70 Xr70 Ct 70 C70 70cc 50cc Performance

( Brand: Bfo ), ( Manufacturer Part Number: QNEF01 ), ( Bundle Listing: Yes ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Compatible Make: For Honda ), ( Compatible Model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65 ), ( Country Of Origin: China ), ( 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 Complete Kit Honda Ct 50cc Performance fits CRF70 XR70 C70 1970

Introducing the BFO QNEF01 Cylinder Head Kit, an exceptional upgrade for your Honda CRF70, XR70, C70, or 70cc/50cc mini bike. This performance cylinder head kit is meticulously engineered to deliver increased power, improved throttle response, and enhanced cooling capabilities for your off-road machine.

The BFO QNEF01 Cylinder Head Kit is a direct replacement for the stock cylinder head, featuring a high-performance design that is CNC-machined from premium aluminum alloy for superior strength and durability. This cylinder head kit comes with a high-performance exhaust port design that facilitates better gas flow, resulting in increased power output.

The BFO QNEF01 Cylinder Head Kit is also equipped with large, high-flow intake ports that allow for greater air intake, improving the bike's throttle response and overall engine performance. In addition, this cylinder head kit comes with oversized valves that provide better flow and improved combustion efficiency.

One of the standout features of the BFO QNEF01 Cylinder Head Kit is its enhanced cooling capabilities. This is achieved through the use of larger cooling fin sizes and an improved cooling fin design, which allows for more efficient heat dissipation. The cylinder head kit also comes with a high-performance cooling system that includes a larger water pump and an upgraded radiator.

The BFO QNEF01 Cylinder Head Kit comes with all the necessary hardware for a straightforward installation, including new head gaskets, camshaft, and valve springs. This cylinder head kit is designed to fit Honda CRF70, XR70, C70, and 70cc/50cc mini bikes, making it a versatile and valuable addition to any off-road enthusiast's garage.

In summary, the BFO QNEF01 Cylinder Head Kit is a high-performance upgrade for your Honda CRF70, XR70, C70, or 70cc/50cc mini bike. It delivers increased power, improved throttle response, and enhanced cooling capabilities, making it an essential accessory for any off-road rider looking to take their bike to the next level.

Pros and Cons of Buying a BFO QNEF01 Cylinder Head Kit for Honda CRF70, XR70, C70, 70cc, and 50cc

Introduction:

The BFO QNEF01 cylinder head kit is a popular aftermarket upgrade for Honda CRF70, XR70, C70, 70cc, and 50cc motorcycles. This kit is known for its potential performance enhancements. In this article, we will discuss the pros and cons of purchasing this cylinder head kit to help you make an informed decision.

Pros:

1. Increased Power: The BFO QNEF01 cylinder head kit is designed to increase power output. It achieves this by improving the engine's combustion efficiency and increasing the flow of air and fuel into the cylinders.

2. Improved Throttle Response: The kit's design enhances the bike's throttle response, allowing for quicker acceleration and smoother power delivery.

3. Enhanced Engine Durability: The kit's components are made from high-quality materials, ensuring improved engine durability and longevity.

4. Customizability: The BFO QNEF01 cylinder head kit is available in various options, enabling riders to choose the best configuration for their specific riding style and preferences.

Cons:

1. Complex Installation: Installing the BFO QNEF01 cylinder head kit can be a complex process, requiring advanced mechanical skills and specialized tools.

2. Cost: The kit is more expensive than OEM parts, which may be a deterrent for some buyers.

3. Potential for Engine Damage: Improper installation or incorrect configuration of the kit might lead to engine damage, potentially resulting in expensive repairs.

Conclusion:

The BFO QNEF01 cylinder head kit offers significant performance enhancements for Honda CRF70, XR70, C70, 70cc, and 50cc motorcycles. However, it comes with complex installation and a higher cost compared to OEM parts. To ensure a successful installation, it's crucial to use a professional mechanic or follow detailed instructions thoroughly. If you are comfortable with the potential challenges and are looking for a significant power boost, the BFO QNEF01 cylinder head kit might be an excellent investment for your motorcycle.

Recommendation:

If you decide to purchase the BFO QNEF01 cylinder head kit, make sure to buy it from a reputable dealer. Additionally, consider having it installed by a professional mechanic to minimize the risk of engine damage. Always remember that any modification comes with risks and benefits, and it's essential to weigh these factors carefully before making a decision.

Details:

This head will only work with FLAT TOP pistons. Cylinder Head for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 50cc Large Bore / 70cc Small. For Honda ATC70 1978-1985. For Honda TRX70.

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

specifications cylindermotorcycleiz:

  • for models: Crf70, Xr70, C70
  • for makes: Honda
  • for years: 1970
  • brand: Bfo
  • mpn: Qnef01
  • bundle listing: Yes
  • california prop 65 warning: California Prop 65 Warning
  • compatible make: For Honda
  • compatible model: Atc70 Crf70 Ct70 C70 Trx70 Xr70 S65
  • country of origin: China
  • 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

seller cylindermotorcycleiz:

  • rating: 99.7%
  • # reviews: 28082
  • city: Elk Grove Village, Illinois

shipping cylindermotorcycleiz:

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

returns cylindermotorcycleiz:

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

offer cylindermotorcycleiz:

  • started: May 14, 2026
  • best offers: True
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0

general cylindermotorcycleiz:

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

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for models: crf70, xr70, c70, for makes: honda, for years: 1970, bundle listing: yes, california prop 65 warning: california prop 65 warning, compatible make: for honda, compatible model: atc70 crf70 ct70 c70 trx70 xr70 s65, country of origin: china, 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,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > cylinder heads, sku: 14289499683443722,
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