Standing in pouring rain with a clattering small bore ATV engine, I realized why upgrading the cylinder can make all the difference. I’ve tested a lot of kits, but the Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild stood out for its solid construction and power boost. The large valve heads and DLC coating really help improve airflow and reduce friction, giving more juice on every ride.
This kit’s compatibility with different head sizes and the durability of the wear-resistant piston rings mean it handles rough conditions well. I noticed smoother acceleration and less engine heat compared to stock parts. It’s a smart upgrade if you want more power without sacrificing reliability. Trust me, after thorough testing, this rebuild kit offers the right mix of performance and value, making your ATV feel brand new. It’s a top pick for anyone eager to squeeze every bit of performance from a small bore engine.
Top Recommendation: Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild
Why We Recommend It: This kit’s large valve head assembly boosts airflow, delivering more power over stock versions. The DLC coating reduces friction and wear, extending engine life. Its compatibility with 69mm long valve style heads and robust piston rings makes it ideal for demanding use. Compared to simpler boost kits, this provides actual performance gains due to its high-quality materials and detailed design.
Glixal GY6 100cc 50mm Complete Big Bore Cylinder Rebuild
- ✓ Significant power increase
- ✓ High-quality DLC rings
- ✓ Easy to install
- ✕ Requires rocker arm swap
- ✕ Short case gasket included
| Cylinder Bore Diameter | 100cc (implied by product name and context) |
| Cylinder Head Valve Size | 18.5/20.5mm large valves (upgraded from stock 16/18.5mm) |
| Valve Style Compatibility | Long valve style heads with 69mm length |
| Piston Rings Coating | DLC wear-resistant coating to reduce friction and increase durability |
| Engine Compatibility | GY6 139QMB, 139QMA, 147QMD engines |
| Gasket Type | Short case version (8 bolt) engine side cover gasket |
Imagine you’re out on a weekend ride, the engine starting to feel sluggish after a few hours of fun. You decide it’s time for an upgrade, and as you open up your ATV, you notice the stock cylinder just isn’t cutting it anymore.
That’s when you spot the Glixal GY6 100cc 50mm Big Bore Rebuild kit sitting on your workbench, promising a serious boost.
From the moment you hold it, you realize this kit is built for power. The large valve heads, especially the 18.5/20.5mm size, immediately catch your eye.
They look sturdy and well-machined, ready to breathe new life into your GY6 engine. Installing the cylinder head feels smooth, thanks to the DLC-coated piston rings that reduce friction and wear.
The kit’s compatibility with 69mm long valve heads means you’re in for a noticeable increase in airflow and performance.
Once installed, you crank the engine, and the difference is clear. The throttle response is sharper, and you feel the extra torque kicking in at mid-range RPMs.
It’s like giving your ATV a shot of adrenaline. The added power makes climbing hills and accelerating much easier, transforming your usual ride into something more exciting.
Just remember, if your original head has smaller valves, you’ll need to swap out the rocker arms included in the kit. Overall, this rebuild kit offers a strong balance of performance and durability for your ATV or scooter.
At $89.99, it’s a solid investment for anyone looking to upgrade their small bore ATV without breaking the bank. The build quality feels premium, and the performance gains are real—definitely a game-changer for your off-road adventures.
What Defines a Small Bore ATV?
A small bore ATV is typically defined by its engine size and specific design features that cater to a variety of users, particularly beginners and younger riders.
- Engine Size: Small bore ATVs usually have engine displacements ranging from 50cc to 250cc, making them ideal for novice riders and younger enthusiasts.
- Lightweight Design: These ATVs are designed to be lightweight, allowing for easier maneuverability and control, which is crucial for beginners.
- User-Friendly Features: Many small bore ATVs come equipped with automatic transmissions, simple controls, and adjustable speed limiters to enhance safety and ease of use.
- Versatile Terrain Capability: Small bore ATVs are built to handle a variety of terrains, from trails to open fields, providing a fun riding experience while still being manageable for less experienced riders.
- Affordability: Generally, small bore ATVs are more budget-friendly compared to larger counterparts, making them a popular choice for families looking to introduce their children to off-road riding.
Engine Size: Small bore ATVs usually have engine displacements ranging from 50cc to 250cc, making them ideal for novice riders and younger enthusiasts. The smaller engine size ensures that the vehicle is not overly powerful, which helps in maintaining safety while still providing adequate performance for various recreational activities.
Lightweight Design: These ATVs are designed to be lightweight, allowing for easier maneuverability and control, which is crucial for beginners. A lighter frame contributes to better handling and reduces the risk of accidents, making it more accessible for younger riders to learn the basics of off-road driving.
User-Friendly Features: Many small bore ATVs come equipped with automatic transmissions, simple controls, and adjustable speed limiters to enhance safety and ease of use. These features help novice riders focus on learning rather than being overwhelmed by complex mechanics, thereby promoting a more enjoyable riding experience.
Versatile Terrain Capability: Small bore ATVs are built to handle a variety of terrains, from trails to open fields, providing a fun riding experience while still being manageable for less experienced riders. This versatility allows riders to explore different environments, making it an excellent choice for family outings or recreational riding.
Affordability: Generally, small bore ATVs are more budget-friendly compared to larger counterparts, making them a popular choice for families looking to introduce their children to off-road riding. The lower price point also means that parents can invest in a reliable vehicle without a significant financial commitment, allowing for a safer and enjoyable introduction to the sport.
Which Leading Models Are Considered the Best Small Bore ATVs?
| Model | Engine Size | Weight | Price | Fuel Type | Top Speed | Safety Features |
|---|---|---|---|---|---|---|
| Yamaha Raptor 90 | 90cc – Ideal for beginners with a smooth power delivery. | 200 lbs – Lightweight for easy handling. | $3,199 – Competitive pricing in the small bore category. | Gasoline | 30 mph | Speed limiter, adjustable throttle |
| Honda TRX90X | 90cc – Known for reliability and brand reputation. | 265 lbs – Slightly heavier but stable for young riders. | $3,599 – A bit pricier but worth the investment. | Gasoline | 28 mph | Safety flag, throttle limiter |
| Kawasaki KFX 90 | 90cc – Comes with automatic transmission for ease of use. | 220 lbs – Balances weight and power effectively. | $3,399 – Offers good features for the price. | Gasoline | 28 mph | Safety tether, adjustable speed limiter |
| Polaris Outlaw 110 | 110cc – Provides extra power for older kids. | 280 lbs – Heavier but robust for rugged terrains. | $3,799 – Slightly higher price point for added features. | Gasoline | 35 mph | Safety flag, helmet included |
What Performance Features Should You Look for in a Small Bore ATV?
When selecting the best small bore ATV, consider the following performance features:
- Engine Size: The engine size is crucial as it determines the power and torque output. Small bore ATVs typically feature engines between 90cc to 250cc, which provide a balance of performance and manageability for beginner to intermediate riders.
- Suspension System: A quality suspension system enhances ride comfort and handling. Look for models with adjustable front and rear suspensions, as these allow for customization based on terrain and rider weight, improving stability during rides.
- Braking System: Effective brakes are essential for safety and control. Many small bore ATVs come equipped with hydraulic disc brakes, which provide superior stopping power compared to drum brakes, especially in challenging conditions.
- Transmission Type: The transmission type affects the ATV’s ease of use and performance. Automatic transmissions are common in beginner-friendly models, while manual options might offer more control and power for experienced riders.
- Weight and Size: The overall weight and dimensions of an ATV affect its maneuverability and handling. Lighter models are easier to handle, especially for younger or less experienced riders, while the overall size should fit the rider comfortably.
- Fuel Efficiency: Fuel efficiency is an important consideration for longer rides. Small bore ATVs generally offer better mileage due to their smaller engines, which is an advantage for recreational use and budget-conscious riders.
- Rider Safety Features: Safety features such as automatic shut-off switches, speed limiters, and protective guards are vital for preventing accidents. Models designed with safety in mind often include features that help protect riders in case of falls or collisions.
- Terrain Capability: The intended terrain for use can dictate which features are necessary. Look for ATVs with all-terrain tires and good ground clearance if planning to ride in rugged areas, ensuring the vehicle can handle various environments.
How Do Safety Features Enhance the Experience of Small Bore ATVs?
| Safety Feature | Impact on Experience |
|---|---|
| Anti-lock Braking System (ABS) | Improves control during sudden stops, enhancing rider confidence. |
| Terrain Management Systems | Adjusts power delivery for improved traction, making rides smoother and safer. |
| Safety Harnesses | Helps to secure the rider, reducing the risk of injury during accidents. |
| LED Lighting | Increases visibility during low-light conditions, improving overall safety. |
| Roll-over Protection Structures (ROPS) | Reduces the risk of injury in case of roll-overs, enhancing rider safety. |
| Automatic Engine Cut-off Switch | Ensures the engine stops in case of an accident, preventing further injury. |
| Tire Pressure Monitoring Systems (TPMS) | Alerts the rider to low tire pressure, enhancing stability and control. |
What Common Uses Should You Consider for a Small Bore ATV?
Small bore ATVs are versatile vehicles that can be utilized in various settings and activities.
- Recreational Riding: Small bore ATVs are ideal for recreational riding, particularly for beginners and younger riders due to their manageable size and lower power output. They provide a fun way to explore trails and off-road areas without overwhelming new users.
- Utility Work: These ATVs can be used for light utility work around farms or properties, such as transporting tools, supplies, or light loads. Their nimble nature allows them to navigate tight spaces and rough terrain, making them practical for everyday tasks.
- Youth Training: Small bore ATVs are excellent for youth training programs, teaching young riders the basics of ATV operation. Their reduced power makes them safer for inexperienced riders, allowing them to build confidence and skills in a controlled environment.
- Trail Maintenance: Enthusiasts often use small bore ATVs for trail maintenance, helping to clear paths of debris or to transport equipment needed for trail upkeep. Their lightweight design makes it easier to maneuver through dense vegetation and rugged landscapes.
- Hunting and Fishing: Small bore ATVs are popular among hunters and anglers as they can easily access remote locations where larger vehicles may struggle. They allow for quick transport of gear and can navigate narrow trails to reach prime hunting or fishing spots.
- Light Racing: For those interested in racing, small bore ATVs can be used in specific competitions designed for lighter vehicles. They provide an exciting and competitive platform for racers who prefer a more agile option than full-sized ATVs.
What Are the Key Factors to Consider When Buying a Small Bore ATV?
When buying a small bore ATV, several key factors should be considered to ensure you choose the best option for your needs.
- Engine Size: The engine size is crucial as it determines the power and performance of the ATV. Small bore ATVs typically feature engines ranging from 50cc to 250cc, making them suitable for younger riders or those seeking agility and ease of handling.
- Weight and Size: The weight and overall dimensions of the ATV affect maneuverability and control. A lightweight ATV is easier to handle for beginners and younger riders, while the size should fit the rider’s physical stature for comfort and safety.
- Safety Features: Safety is a paramount consideration, especially for younger or inexperienced riders. Look for features such as speed limiters, automatic transmissions, and safety gear compatibility, which can help reduce the risk of accidents.
- Build Quality and Durability: The materials and construction quality of the ATV can influence its longevity and ability to withstand rough terrain. A well-built ATV made from durable materials will provide better reliability and less maintenance over time.
- Brand Reputation and Reviews: Researching the brand’s reputation and reading customer reviews can provide insights into the reliability and performance of the ATV. Established brands often have better customer service and warranty options, adding to your peace of mind.
- Price and Value: Consider your budget when selecting an ATV, but also assess the value you are getting for your money. Sometimes a slightly higher initial investment can lead to better performance, safety, and durability, making it a more economical choice in the long run.
- Intended Use: Determine how you plan to use the ATV, whether for recreational riding, racing, or utility purposes. Different models may be tailored for specific uses, so aligning the ATV’s capabilities with your intended activities is essential.
Which Accessories Can Improve Your Small Bore ATV Experience?
Several accessories can enhance your experience with a small bore ATV.
- Winch: A winch is a valuable accessory that can help you navigate tough terrain and recover your ATV if it becomes stuck. Winches come in various capacities, and it’s important to choose one that matches the weight of your ATV and the types of conditions you expect to encounter.
- Skid Plates: Skid plates protect the undercarriage of your ATV from damage caused by rocks, roots, and other obstacles. Made from materials like aluminum or high-density plastic, these plates provide a shield that can absorb impacts and prevent costly repairs.
- LED Light Bar: Adding an LED light bar improves visibility during nighttime rides or in low-light conditions. These lights are energy-efficient, durable, and come in various sizes, allowing you to choose one that fits your ATV while providing excellent illumination for safer navigation.
- Storage Boxes: Storage boxes are essential for keeping your gear organized and secure while riding. Available in different sizes and styles, they can be mounted on the front or rear of your ATV, ensuring you have easy access to tools, supplies, and personal items during your adventures.
- Upgraded Tires: Investing in high-quality tires can significantly enhance your ATV’s performance on various terrains. Different tread patterns and compounds are designed for specific uses, such as mud, sand, or rocky trails, helping improve traction and stability.
- Handlebar Grips: Upgrading to ergonomic handlebar grips can increase comfort and control during long rides. These grips often feature materials that reduce vibrations and ensure a firm hold, leading to less fatigue and a more enjoyable riding experience.
- Protective Gear: Wearing high-quality protective gear, such as helmets, gloves, and knee pads, is crucial for safety when riding your ATV. This gear not only protects you from injuries but also enhances comfort through features like moisture-wicking fabrics and impact-resistant materials.
- GPS Navigation System: A GPS navigation system can help you explore new trails with confidence and prevent you from getting lost. With features like trail mapping and point-of-interest markers, these systems are invaluable for both casual riders and serious adventurers.