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JRL CNC Cylinder Head for Racing 66cc/80cc Engine (red) | Racing CNC cylinder head, fits 66cc 80cc motorized bicycle engine, high performance, red anodized finish
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JRL CNC Cylinder Head for Racing 66cc/80cc Engine (red) | Racing CNC cylinder head, fits 66cc 80cc motorized bicycle engine, high performance, red anodized finish
100% CNC made with high grade aluminum
JRL CNC Cylinder Head for Racing 66cc/80cc Engine (red) | Racing CNC cylinder head, fits 66cc 80cc motorized bicycle engine, high performance, red anodized finish
JRL

Item #: 11956279

JRL CNC Cylinder Head for Racing 66cc/80cc Engine (red) | Racing CNC cylinder head, fits 66cc 80cc motorized bicycle engine, high performance, red

Item #: 11956279

GTQ 306

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Order now and get it around Tuesday, August 25
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100% CNC made with high grade aluminum
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What Stands Out

Precision CNC Design
Crafted with advanced CNC technology, this cylinder head ensures optimal airflow and heat dissipation for maximized engine performance and reliability in racing environments.
Lightweight Aluminum
Constructed from high-quality aluminum, it offers a significant weight reduction without sacrificing strength, enhancing the overall speed and agility of your gas motorized bicycle.
Custom Fit
Designed specifically for 66cc/80cc engines, this cylinder head provides a seamless, custom fit that eliminates compatibility issues, ensuring peak performance and durability tailored to racing needs.

Product Details

Upgrade your gas motorized bicycle with the high-performance JRL Yellow CNC Cylinder Head for Racing 66cc80cc Engine. Shop now at Ubuy Guatemala and experience ultimate speed and precision.
  • JRL Yellow CNC Cylinder Head for Racing 66cc80cc Engine Gas Motorized Bicycle Custom Aluminum
  • Designed to fit 66cc / 80cc Gas Motorized Bicycles
  • Includes 1x CNC Cylinder Head
  • Cylinder head has a diameter of 118mm and a height of 47mm
  • Important: Please check all connectors with your stock ones carefully
  • Made with high-quality custom aluminum for superior performance and durability

Who Should Buy?

Suitable For
  • Racing Enthusiasts

    Ideal for users looking to enhance speed and performance in racing scenarios with gas motorized bicycles.

  • Custom Builders

    Perfect for DIY enthusiasts building custom motorized bicycles, allowing for improved engine cooling and aesthetics.

  • Experienced Riders

    Designed for experienced riders wanting to upgrade their existing engines for better performance and efficiency.

Not Suitable For
  • Casual Riders

    Not suitable for casual riders who prefer standard performance without the need for high-performance upgrades.

Product Description

JRL CNC Cylinder Head for Racing 66cc/80cc Engine (red) | Racing CNC cylinder head, fits 66cc 80cc motorized bicycle engine, high performance, red anodized finish

About This Item

Upgrade your motorized bicycle with the JRL Yellow CNC Cylinder Head for Racing 66cc80cc Engine Gas Motorized Bicycle. Engineered to deliver maximum performance and durability, this custom aluminum cylinder head is a must-have for any racing enthusiast. Designed specifically for gas motorized bicycles, this CNC cylinder head is built to withstand the demands of high-performance racing. Crafted from high-quality aluminum, it offers superior strength and heat resistance, ensuring optimal performance even in the most demanding conditions. The JRL Yellow CNC Cylinder Head features precision machining for a perfect fit and maximum efficiency.

Its advanced design promotes airflow and combustion, resulting in improved engine performance and increased power output. With this cylinder head, you'll experience smoother acceleration, enhanced throttle response, and a noticeable boost in overall speed. Not only does this cylinder head enhance performance, but it also adds a touch of style to your motorized bicycle. The eye-catching yellow color adds a vibrant and sporty look that is sure to turn heads wherever you go.

Whether you're hitting the racetrack or cruising around town, this CNC cylinder head will make your bike stand out from the crowd. Upgrade your gas motorized bicycle with the JRL Yellow CNC Cylinder Head for Racing 66cc80cc Engine Gas Motorized Bicycle and experience the thrill of high-performance racing. Don't settle for ordinary, unleash the full potential of your bike and dominate the competition.

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Customer Questions & Answers

  • Question: What is the JRL Yellow CNC Cylinder Head designed for?

    Answer: The JRL Yellow CNC Cylinder Head is specifically designed for racing applications in 66cc and 80cc gas-powered motorized bicycles. Its unique engineering enhances performance by improving airflow and combustion efficiency. This custom aluminum head is crafted using CNC machining, which ensures precision and durability, helping to increase horsepower and torque. If you're looking to customize or upgrade your motorized bicycle for better speed and performance, this cylinder head is an excellent choice.
  • Question: What materials are used in the construction of the JRL Cylinder Head?

    Answer: The JRL Cylinder Head is made from high-quality aluminum, which is not only lightweight but also provides excellent heat dissipation. This material choice is crucial for racing applications where performance is key, as it helps to maintain optimal operating temperatures. The CNC machining process further enhances the material properties, resulting in a durable part that can withstand the rigorous demands of high-speed biking. Riders who need both performance and longevity will find this product beneficial.
  • Question: Can the JRL Cylinder Head increase the speed of my bicycle?

    Answer: Yes, the JRL Yellow CNC Cylinder Head can significantly enhance the speed of your motorized bicycle. By optimizing the combustion chamber and improving airflow, it allows for a more efficient engine performance, translating into increased speed. This makes it a popular choice among racing enthusiasts looking to squeeze every bit of performance from their engine. Riders who aim for competitive racing will especially benefit from this upgrade, as it can lead to faster lap times.
  • Question: How does the JRL CNC Cylinder Head compare to stock cylinder heads?

    Answer: Compared to stock cylinder heads, the JRL CNC Cylinder Head features superior design and construction, resulting in enhanced performance. Stock heads may restrict airflow and combustion efficiency, whereas the JRL design focuses on optimizing those parameters for racing. This translates to improved acceleration and power output. If you're seeking considerable improvements for racing, upgrading to the JRL head is a smart decision, providing a competitive edge over standard options.
  • Question: Is installation of the JRL Cylinder Head difficult?

    Answer: Installation of the JRL Yellow CNC Cylinder Head requires mechanical skill, but it can be manageable for those familiar with motorized bicycles. You will need basic tools and an understanding of engine disassembly and reassembly. The cylinder head comes with standard mounting points, allowing it to fit well in most compatible motors. For best results, detailed installation guides or videos are available that can walk you through the process, ensuring a correct and fitted upgrade.
  • Question: What kind of maintenance is required after installing the JRL Cylinder Head?

    Answer: After installing the JRL Yellow CNC Cylinder Head, regular maintenance involves checking for any leaks and ensuring all bolts are properly torqued. Given the added performance, it's also essential to monitor engine temperature during operation. Keeping your engine tuned and routinely inspecting components like the spark plug can help maximize the benefits you gain from this upgrade. This maintenance routine helps in maintaining optimal performance for your racing endeavors.
  • Question: Will I need to make other modifications when using the JRL Cylinder Head?

    Answer: Depending on your current setup, additional modifications may be necessary when installing the JRL Yellow CNC Cylinder Head. Upgrading your exhaust system or carburetor can complement the increased airflow and combustion efficiency provided by the cylinder head. Many racers choose to enhance their bike’s overall performance with tweaks to fuel mix and gearing. This holistic approach can maximize the benefits of the cylinder head for improved racing outcomes.
  • Question: What is the weight of the JRL Yellow CNC Cylinder Head?

    Answer: The JRL Yellow CNC Cylinder Head is designed to be lightweight, a critical factor for racing applications where every gram counts. The use of aluminum contributes to its lightweight properties while still offering strength and durability. This design helps maintain the overall weight of the motorized bicycle low, enabling better handling and speed. Riders looking to optimize performance will find the balance between strength and weight to be advantageous in competitive scenarios.
  • Question: Is the JRL Cylinder Head compatible with all 66cc and 80cc engines?

    Answer: The JRL Yellow CNC Cylinder Head is designed for compatibility with most 66cc and 80cc gas-powered engines commonly used in motorized bicycles. However, it's essential to verify the specific engine model and dimensions to ensure a proper fit. Many enthusiasts have successfully made this upgrade with positive results, but it's recommended to confirm compatibility for your unique setup before making a purchase, ensuring a seamless installation experience.
  • Question: Where can I buy the JRL Yellow CNC Cylinder Head for Racing in Guatemala?

    Answer: You can buy the JRL Yellow CNC Cylinder Head for Racing 66cc80cc Engine Gas Motorized Bicycle Custom Aluminum from Ubuy in Guatemala. Ubuy offers a wide selection of motorized bicycle parts, making it a reliable choice for your needs. They ensure that you have access to quality products and efficient customer service, enhancing your shopping experience. Visit Ubuy's website to find more details on the product and place your order easily.

JRL Cylinder Heads Editorial Review

The high-compression cylinder head helps the engine run cooler and adds more power to your bike. The head is easy to bolt on and fits 7/8" handlebars. It is essential to use the correct torque specified for the different bolt sizes. The head gasket is about 1.5 to 2 inches tall; therefore, a deep socket is necessary for installation. The gasket and fins may be damaged on arrival. Upgrading your carburettor and exhaust will result in the most performance from this mod. Customers have reported enjoying the improvement in the frequency of four-stroke, increased acceleration, better compression, and fast engine cooling. However, there is no noticeable increase in power, and you need to take a break after 20 minutes.

Customer Reviews & Ratings

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Pros

  • Easy to install
  • Improves engine cooling
  • Increases frequency of four-stroking
  • Increases acceleration
  • Better compression

Cons

  • No noticeable increase in power

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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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23 July 2026 · via Trustpilot
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  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

GTQ 306

Order now and get it around Tuesday, August 25

QTY:

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Features & Benefits

  • High grade aluminum cylinder head for 66cc/80cc gas motorized bicycle
  • 100% CNC made with fine design to keep your engine cool
  • Special design adds up to the compression
  • Suitable for 66cc/80cc Gas Motorized Bicycle
  • Package includes 1x CNC cylinder head with 118mm diameter and 47mm height

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