1. Motorcycle Cylinder Heads & Valve Covers For Sale
  2. sku: 12102610234124781
  3. BFO B4LNTV

BFO B4LNTV Cylinder Head Kit ATC70 70CC 50CC

fits model: Xr70, Ct70, C70, Crf. make: Honda. year: 1970.

B4lntv Bfo Cylinder Head Complete Kit For Honda Crf 70 Xr70 Ct70 C70 Atc70 70cc 50cc

( Brand: Bfo ), ( Manufacturer Part Number: B4LNTV ), ( 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 Complete Kit Honda 50cc fits XR70 CT70 C70 CRF 1970

Introducing the BFO B4LNTV Cylinder Head Kit, specifically designed for Honda CRF 70, XR70, CT70, C70, and AT70 models with 70cc and 50cc engines. This cylinder head kit is an excellent choice for those looking to enhance the performance of their Honda dirt bike or quad.

The BFO B4LNTV Cylinder Head Kit comes with several upgraded components that set it apart from the OEM (original equipment manufacturer) parts. The kit includes a high-performance cylinder head with larger intake and exhaust ports, which allow for increased air and fuel intake and exhaust gases exit, respectively. This results in improved combustion efficiency, increased power output, and better overall engine performance.

Moreover, the cylinder head features a high-strength, lightweight design made from aluminum alloy. This not only helps to reduce the weight of the engine but also enhances its durability, ensuring that it can withstand the rigors of off-road riding. The cylinder head comes with pre-installed valves, which are made of high-quality materials that provide excellent sealing and durability.

The kit also includes a set of high-performance pistons and rings that offer superior compression and ring grip, ensuring optimal engine performance and longevity. The pistons are made of forged aluminum alloy, which provides strength and durability, while the rings are made of high-tensile steel, ensuring a tight seal between the piston and cylinder wall.

The BFO B4LNTV Cylinder Head Kit is easy to install, with all necessary hardware included in the kit. The installation process is similar to that of the OEM parts, making it a straightforward upgrade for most riders. Additionally, the kit comes with a detailed installation guide to ensure a smooth and successful installation process.

In summary, the BFO B4LNTV Cylinder Head Kit is an excellent upgrade for Honda CRF 70, XR70, CT70, C70, and AT70 models with 70cc and 50cc engines. It offers increased power output, improved combustion efficiency, and enhanced durability, making it a worthwhile investment for any serious off-road rider.

Buying a BFO (Brady Foam Off-Road) B4LNTV cylinder head kit for Honda CRF 70, XR70, CT70, C70, AT70, and 70cc/50cc models comes with several pros and cons. Here's a detailed analysis:

Pros:

1. Improved Performance: The BFO cylinder head kit is known to provide better engine performance, including increased horsepower and torque.

2. Durability: The kit is designed to be robust and long-lasting, ensuring that it can withstand the rigors of off-road riding.

3. Enhanced Cooling: The BFO cylinder head kit features improved cooling capabilities, which helps prevent engine overheating and extends the engine's life.

4. Easy Installation: The kit comes with clear instructions, making it relatively straightforward to install, even for those without extensive mechanical knowledge.

5. Cost-Effective: Compared to buying a new engine or even a complete rebuild, a cylinder head kit is a more cost-effective solution for improving the performance of your Honda CRF 70.

Cons:

1. Expensive: While the kit may be more cost-effective than a complete engine rebuild, it is still a significant investment.

2. Requires Skills: Installing the kit requires some mechanical knowledge and skills. If you're not confident in your abilities, it may be worth considering hiring a professional.

3. Potential Compatibility Issues: Ensure that the kit is compatible with your specific Honda CRF 70 model before making a purchase.

4. Risk of Damage: There is a risk of damaging other engine components during the installation process. Take care to follow the instructions carefully to minimize this risk.

Conclusion:

The BFO B4LNTV cylinder head kit for Honda CRF 70 models offers several advantages, such as improved performance, durability, enhanced cooling, and cost-effectiveness. However, it also comes with some drawbacks, including the expense, the requirement for mechanical skills, potential compatibility issues, and the risk of damaging other engine components during installation.

Recommendation:

If you're looking to significantly improve the performance of your Honda CRF 70, a cylinder head kit like the BFO B4LNTV may be worth considering. However, be sure to weigh the pros and cons carefully and ensure that you have the necessary skills and resources to install the kit yourself. Alternatively, you may want to consider hiring a professional to do the installation for you. Ultimately, the decision depends on your budget, mechanical abilities, and desired outcome.

Details:

This head will only work with FLAT TOP pistons. For Honda ATC70 1978-1985. . Compare the Combustion Chamber Size shown below, to your current head.

For Honda S65. For Honda TRX70. Cylinder Head for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 50cc Large Bore / 70cc Small. Fast Shipping.

This head will only work with DOMED pistons.

part #: b4lntv prices

  • $19.99-$47.59

specifications cylindermotorcycleiz:

  • for models: Xr70, Ct70, C70, Crf
  • for makes: Honda
  • for years: 1970
  • brand: Bfo
  • mpn: B4lntv
  • 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

payments cylindermotorcycleiz:

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

returns cylindermotorcycleiz:

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

offer cylindermotorcycleiz:

  • quantity: 5
  • sold: 0
  • options: Ship-to-home
  • best offers: True
  • availability: In Stock
  • started: July 17, 2025

seller cylindermotorcycleiz:

  • city: Houston, Texas
  • # reviews: 3914
  • rating: 98.5%

general cylindermotorcycleiz:

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

shipping cylindermotorcycleiz:

  • carrier: FedEx
  • transit: 4-9 Days
  • cost: $0.00
  • class: Standard
  • service: FedEx Ground or FedEx Home Delivery
  • type: Fixed
for models: xr70, ct70, c70, crf, 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, 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: 12102610234124781,
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