6 Best Big Bore Kits for Honda Grom in 2027
If you’re looking to boost your Honda Grom’s power and durability in 2027, big bore kits are a great place to start. These kits can seriously upgrade your bike’s performance by increasing engine capacity and torque without needing major modifications.
Popular options include the 200CC 64mm Big Bore Kit, TB60 Big Bore Kit, and the 62mm Motorcycle Cylinder Rebuilt Kit.
These big bore kits are designed for direct mounting, making installation straightforward. They use durable materials to ensure long-lasting performance and noticeable torque improvements.
Brands like KITACO offer all-encompassing rebuild kits that make upgrading your Honda Grom easier than ever. Keep exploring these options to find the perfect kit that matches your riding needs and style.
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KITACO Forged Crankshaft and Connecting Rod for Honda Grom
- KITACO FORGED Crankshaft and Connecting Rod for Honda Grom / Grom SF with 60mm bore or LARGER (will NOT work...
- - will NOT work with Stock Bore
- - ONLY for 60mm Bore or LARGER
- - Design for high stress, high-rpm demands of a big bore kit
- - Recommended installation to be done by professional motorcycle mechanic
Upgrade your Honda Grom engine with the KITACO Forged Crankshaft and Connecting Rod, designed to meet the demands of big bore kits. When moving to a 60mm bore or larger, stock components often fall short under increased stress and RPM. This forged combo enhances engine strength and reliability, reducing the risk of failure during high-performance rides.
Made specifically for 2013-2018 Honda Grom and Grom SF models, this crankshaft and connecting rod improve the engine’s durability while maintaining smooth operation. Its precision design helps manage the extra power and forces generated by larger bore setups, ensuring consistent performance over time.
Maintenance is straightforward if installed correctly by a professional. Proper installation is crucial to maximize the component’s lifespan and maintain engine balance. Avoid using this part with stock bore engines, as it is tailored for modified setups only.
The KITACO forged crankshaft and connecting rod offer a durable upgrade that supports your engine’s enhanced capabilities. This combination is essential for riders who demand reliable power and longevity in their modified Honda Grom.
Best for: Riders upgrading their 2013-2018 Honda Grom or Grom SF to a 60mm bore or larger, seeking a robust crankshaft and connecting rod for high-performance use.
What We Like:
- Engineered to handle high RPM and stress from big bore kits
- Precision design tailored for 2013-2018 Honda Grom models
- Enhances engine durability and reliability under increased load
- Requires professional installation to ensure optimal performance
Specification:
| Feature | Details |
|---|---|
| Manufacturer | KITACO |
| Compatible Models | Honda Grom (2013-2018), Grom SF (2013-2018) |
| Bore Size | For 60mm or larger bore kits |
| Material | Forged Steel |
| Weight | Not specified |
Honda GROM 125 Cylinder Piston Ring Rebuild Kit
- Compatible Models: For Honda Motorcycle GROM125 2014-2015 2017-2020 CT125A 2021
- Compatible Models: For Honda Motorcycle GROM125 2014-2015 2017-2020 CT125A 2021
- Compatible Models: For Honda Motorcycle GROM125 2014-2015 2017-2020 CT125A 2021
- It ensures the smooth operation of the vehicle, pursues better driving comfort, and balances cost and...
- Please read our descriptions and pictures carefully to ensure that the model is the same as your needs
Experience a smoother, more reliable engine rebuild with the Honda GROM 125 Cylinder Piston Ring Rebuild Kit. This kit is designed to address common wear issues in the top-end of your Honda GROM 125, restoring optimal compression and performance. Its precise fit helps prevent leaks and ensures consistent engine operation.
Maintenance becomes simpler with all essential components included, such as piston rings and gaskets, reducing the need for separate purchases. This comprehensive approach streamlines your rebuild process, saving time and minimizing errors. The kit’s design supports long-term durability and reliable function.
Intended for Honda GROM 125 models from 2014 to 2020, and CT125A 2021, this rebuild kit targets riders and mechanics focused on quality repairs. It balances cost and performance without sacrificing reliability, making it a practical choice for top-end maintenance.
While the kit fits specific model years, it provides a straightforward solution for restoring engine health. The included components and ease of installation make it a valuable asset for anyone performing a top-end rebuild on these Honda models.
Best for: Riders and mechanics seeking a reliable and easy-to-install top-end rebuild kit for Honda GROM 125 models from 2014 to 2020 and CT125A 2021.
What We Like:
- Precise fit ensures smooth engine operation and proper compression.
- Includes all necessary piston rings and gaskets for a complete rebuild.
- Simplifies maintenance with comprehensive, ready-to-install parts.
- Balances affordability with dependable performance.
- Supported by responsive customer service and a 30-day return policy.
Specification:
| Feature | Details |
|---|---|
| Manufacturer | SHTLYH |
| Compatible Models | Honda GROM 125 (2014-2020), CT125A (2021) |
| Weight | 4.43 lb (2.01 kg) |
| Dimensions | 8.4 x 8.1 x 7.2 inches |
200CC 64MM Big Bore Kit 14pcs/Set for HONDA
- Good texture and long service life.
- Ensure practicality and durability
- Easy to Install and good workmanship
- Easy to use and good performance
- Can be a direct replacement for old or damaged products
Upgrade your Honda Grom’s engine with the 200CC 64MM Big Bore Kit designed for enhanced performance and longevity. This kit addresses power limitations by increasing engine capacity, helping your bike deliver smoother acceleration and more responsive handling. Its precise design ensures a direct fit, simplifying the upgrade process without the need for major modifications.
Crafted from durable aluminum with a brushed finish, the kit resists wear and corrosion, reducing maintenance efforts. Installation is straightforward, allowing you to replace worn components quickly and get back on the road with improved engine output. The kit’s weight is optimized for balance, fitting Honda CG150 models perfectly.
While primarily made for the Honda CG150, this big bore kit may require tuning adjustments to achieve optimal performance. Understanding these needs ensures the upgrade enhances your bike’s capabilities without unexpected issues.
Best for: Riders and mechanics seeking a reliable, easy-to-install big bore upgrade to boost engine power on Honda CG150 or similar motorcycles.
What We Like:
- Durable aluminum construction with corrosion-resistant finish
- Direct replacement design for easy installation
- Enhances engine power and responsiveness
- Balanced weight suitable for Honda CG150 models
- Requires minimal maintenance after installation
Specification:
| Manufacturer | – |
|---|---|
| Dimensions | 64 mm bore size |
| Weight | Approximately 2 kg |
| Material | Aluminum |
| Color | Brushed finish |
| Compatible Models | Honda CG150 |
TB60 Big Bore Kit
- Universal Parts Big Bore Cylinder Kit for 50cc 2-stroke TB50 1DE41QMB engines. Please see our Warran
- ty & Returns Policy. Bore: 43mm Overall Height (cylinder): 81.5mm Piston Pin Outer Diameter: 10m
- m Piston Height: 44.5mm Piston Compression Height: 21.5mm
Upgrade your 50cc 2-stroke TB50 1DE41QMB engine with the TB60 Big Bore Kit for a noticeable boost in performance. Designed to enhance power output, this kit addresses the common limitation of smaller engine displacement. Its larger 43mm bore diameter helps increase your engine’s efficiency and responsiveness.
The kit’s design includes a piston optimized for compression, ensuring smoother acceleration and better throttle control. Installation is straightforward, making it accessible for riders wanting to improve their engine without extensive modifications. Regular maintenance will keep the kit running efficiently, preserving the enhanced power over time.
Built specifically for the TB50 1DE41QMB engine, this kit guarantees a precise fit, reducing compatibility issues. While it may not have widespread popularity, its focused design suits riders aiming for reliable performance gains. The kit’s weight and dimensions support easy handling and integration with your existing setup.
Best for: Riders upgrading 50cc 2-stroke TB50 1DE41QMB engines seeking a practical and effective big bore solution for better engine power and performance.
What We Like:
- Increases engine power with a 43mm bore for enhanced performance
- Optimized piston dimensions improve compression and acceleration
- Designed for a precise fit on TB50 1DE41QMB engines
- Easy installation with manageable weight and size
Specification:
| Specification | Details |
|---|---|
| Manufacturer | Universal Parts |
| Bore Diameter | 43 mm (1.69 inches) |
| Cylinder Height | 81.5 mm (3.21 inches) |
| Piston Diameter | 10 mm (0.39 inches) |
| Piston Height | 44.5 mm (1.75 inches) |
| Weight | 4.3 lb (1.95 kg) |
Motorcycle Cylinder Rebuilt Kit Big Bore 62mm
- Engine Enhancement: Improves engine performance to increase power and torque.
- Versatile Compatibility: Works with 125cc and 150cc direct mount engines.
- Comprehensive Kit: Includes all components needed for cylinder rebuild.
- Rugged Construction: Made from durable - to meet engine demands and ensure longevity.
- Improved Performance: Improved engine efficiency and overall performance with larger bore sizes.
Give your 125cc or 150cc Honda Grom a powerful upgrade with this 62mm big bore cylinder rebuild kit. It directly fits engines designed for direct mounting, delivering noticeable improvements in power and torque. This kit helps your engine run more efficiently, boosting overall performance without complicated modifications.
Crafted from sturdy materials, the kit is built to withstand tough riding conditions, ensuring long-lasting reliability. Its compact size and light weight make it easy to handle during installation, reducing downtime and hassle. The complete set includes everything needed for a straightforward cylinder rebuild, simplifying maintenance and repair.
By choosing this big bore kit, you address common performance limitations of smaller engines. It enhances durability and responsiveness, giving your bike a new lease on life. While it’s tailored specifically for 125cc and 150cc direct mount engines, this focus ensures a perfect fit and optimal results.
Best for: Riders and mechanics upgrading or rebuilding the engine of 125cc or 150cc direct mount motorcycles like the Honda Grom to improve power and durability.
What We Like:
- Boosts engine power and torque for better performance
- Durable construction suited for demanding conditions
- Complete rebuild kit simplifies maintenance
- Compact and lightweight for easy installation
Specification:
| Specification | Details |
|---|---|
| Manufacturer | GLAoHZNJ |
| Bore Size | 62 mm |
| Compatible Engine | 125cc and 150cc direct mount |
| Weight | 1.76 oz (50 g) |
| Included Parts | Full cylinder rebuild kit |
52.4mm Cylinder with Gaskets Piston Ring Top End Kit for 4 Stroke 110cc
- FITMENT: Engine cylinder body assy fits most chinese 4 stroke 110cc...
- SIZE:52.4mm(2.06in); Bolt hole spacing: 48mm(1.88in) x 50mm(1.96in), Piston diameter: 52mm(2.04in); Piston pin...
- PACKAGE INCLUDES:Cylinder x1,Piston Kit x1,Piston Ring Set x1,Gasket Kit x1,Spark Plug x1,Industrial Gloves x2
- HIGH PERFORMANCE:Cylinder big bore kits with high toughness,corrosion resistance,rust-proof and has good heat...
- BUILT TO LAST:Big bore kit for 110cc atv parts is made from strong steel.the material is of high quality
Experience a smoother, more powerful ride with the 52.4mm Cylinder with Gaskets Piston Ring Top End Kit for 4 Stroke 110cc. This kit is designed to restore and enhance the performance of your 110cc Chinese engine, addressing common wear issues that reduce power and efficiency. It provides a precise fit for various models, ensuring your engine runs like new.
The kit includes essential components such as the cylinder, piston, piston rings, and gaskets, all crafted from durable steel to resist corrosion and heat. This construction helps maintain a tight seal, preventing leaks and improving combustion for consistent power output. Regular maintenance with this kit keeps your engine reliable and extends its lifespan.
Installation is straightforward but may require basic mechanical skills or professional help to ensure optimal results. By upgrading your top end, you solve problems related to engine wear and loss of compression without replacing the entire engine. This makes it a cost-effective solution for improving your ATV, dirt bike, or go-kart’s performance.
With built-in spark plug and gloves included, the kit offers convenience and safety during installation. Its compatibility with popular brands like Taotao, Falcon, and Kazuma makes it a versatile choice for 110cc 4-stroke engines.
Best for: Riders and mechanics upgrading or repairing 110cc 4-stroke Chinese engines for better power and durability.
What We Like:
- Compatible with multiple popular 110cc engine brands
- High-quality steel construction for heat and corrosion resistance
- Complete kit with all necessary components for installation
- Improves engine compression and performance
- Includes spark plug and gloves for convenience
Specification:
| Specification | Details |
|---|---|
| Manufacturer | Not specified |
| Cylinder Diameter | 52.4 mm (2.06 inches) |
| Engine Type | 4 Stroke 110cc |
| Material | High-quality steel |
| Included Components | Cylinder, piston, piston rings, gaskets, spark plug, gloves |
| Compatible Brands | Taotao, Falcon, Kazuma |
Factors to Consider When Choosing a Big Bore Kit for Honda Grom
When choosing a big bore kit for your Honda Grom, you’ll want to check engine compatibility and material durability first. It’s important to make sure the parts will work well with your bike and last over time.
Consider how much performance boost you’re aiming for and how complex the installation will be. Think about whether you’re comfortable doing it yourself or if you’ll need professional help.
Don’t forget to review the warranty and return policies before making your final decision. It’s always good to know your options just in case something doesn’t go as planned.
Engine Compatibility Requirements
Why does engine compatibility matter so much when choosing a big bore kit for your Honda Grom? Because an incompatible kit can cause poor fitment, performance issues, or even engine damage.
You need to verify the kit fits Honda Grom models from 2013 to 2018, as these are the common years designed for many kits. Also, confirm that your engine’s bore size is at least 60mm since kits for stock bore sizes won’t work.
Match the kit’s specifications to your engine’s bore diameter, displacement, and type precisely. Finally, confirm that installation is recommended for professional mechanics to ensure everything aligns perfectly, avoiding costly mistakes.
Taking these steps guarantees you get the power boost you want without compromising reliability or safety.
Material Durability Standards
Ensuring your big bore kit fits your Honda Grom correctly is just one part of the equation; the materials used in the kit play a huge role in its overall performance and durability. You want components made from high-quality materials like forged aluminum or steel because they resist wear, corrosion, and can handle high engine temperatures without cracking or deforming.
Check for compliance with industry standards such as ASTM or ISO, which guarantee reliable material performance under stress. Pay attention to hardness and tensile strength since these directly affect the kit’s longevity.
Choosing the right materials helps prevent piston seizure, gasket failure, and premature wear. Ultimately, this extends your engine’s life and ensures your Honda Grom runs smoothly for years to come.
Performance Enhancement Goals
Choosing the right big bore kit starts with setting clear performance goals, such as boosting horsepower or torque to match your riding style. If you want more power for racing or aggressive riding, consider larger bore sizes like 62mm or 64mm.
But keep in mind, these bigger kits might need some engine modifications to stay reliable. You’ll also want a kit built to handle high RPM and stress to improve durability and avoid engine failure.
Balancing power gains with engine stability is vital, so your upgrades work well together. Whether you ride daily, race, or hit off-road trails, pick a big bore kit that fits your specific needs.
This approach guarantees you get the performance boost you want without sacrificing engine health or compatibility with other parts.
Installation Complexity Level
After deciding on the performance goals and the size of the big bore kit that suits your riding style, the next step is to contemplate how involved the installation process will be. Installation complexity varies based on the kit’s design and whether it demands engine part removal, like cylinders and pistons.
Kits that require extensive engine modifications or custom tuning usually present higher difficulty. However, clear instructions and included tools can simplify the process considerably.
If a kit involves advanced features or precise adjustments, you might want to consider professional installation to guarantee maximum performance. Keep in mind that choosing a kit with a manageable installation level not only saves time but also reduces the risk of errors, making your upgrade smoother and more enjoyable.
Warranty and Return Policies
While selecting a big bore kit for your Honda Grom, you’ll want to carefully review the warranty and return policies. Verify the warranty duration and what it covers—make sure it protects against manufacturing and material defects.
Check if the policy includes installation errors, especially if you’re having the kit installed professionally. Also, see if the seller offers a voluntary 30-day return policy, so you can return the kit if it doesn’t meet your expectations.
Understand the process for filing warranty claims and whether customer support is readily available to help with troubleshooting. Finally, review return conditions like packaging requirements, restocking fees, and whether you’ll get a refund or store credit.
Knowing these details can save you time and hassle down the road. It’s always better to be prepared than caught off guard!
Price and Value Comparison
Finding the best price for a big bore kit for your Honda Grom means checking out options from different stores and online platforms. But don’t just jump on the lowest price you see—make sure the kit actually fits your bike and meets quality standards.
Sometimes, you’ll find discounts or promotions that look like great deals. Just remember to weigh those savings against things like durability, performance improvements, and what parts come with the kit.
Also, think about warranty coverage and return policies. These add value by protecting your investment if something goes wrong.
Keep an eye on price trends over time too. That way, you can spot the best moment to buy.
Frequently Asked Questions
How Does a Big Bore Kit Affect Fuel Efficiency on a Honda Grom?
A big bore kit usually lowers your Honda Grom’s fuel efficiency because it increases engine displacement and power. This means your bike will consume more fuel, especially if you ride aggressively or tune it for maximum performance.
Can I Install a Big Bore Kit Myself or Need Professional Help?
Installing a big bore kit yourself is like assembling a complex puzzle; you can do it if you’re patient and skilled.
But if you want it flawless and safe, don’t hesitate to seek professional help.
Will My Honda Grom’s Warranty Be Voided After Installing a Big Bore Kit?
Yes, installing a big bore kit will likely void your Honda Grom’s warranty because it modifies the engine beyond factory specifications.
You’ll want to check with your dealer before making any changes to avoid surprises.
Are There Any Specific Maintenance Tips for Bikes With Big Bore Kits?
Think of your bike as a racehorse needing extra care; you’ll want to check spark plugs more often, change oil frequently, and monitor engine temps closely.
Don’t forget regular valve adjustments to keep it running smoothly and powerfully. It’s all about staying on top of these little things to get the best performance out of your big bore kit.
How Does a Big Bore Kit Impact the Overall Lifespan of the Engine?
A big bore kit can shorten your engine’s lifespan if you don’t maintain it properly, since it increases stress and heat.
But if you stay on top of maintenance, you can still enjoy strong performance without major wear.
Conclusion
Choosing the perfect big bore kit for your Honda Grom can feel like a thrilling adventure, with so many options promising to boost your ride’s spirit. While each kit offers its own flair, selecting one that matches your style and needs guarantees you don’t just upgrade your bike—you elevate your entire riding experience.
So, take your time and trust your instincts. Getting the right big bore kit means more than just power; it’s about enhancing every twist and turn on your journey. With the best big bore kits for Honda Grom, you’re not only improving performance but also making your ride smoother and more lively. Ready to transform your Grom? The right kit will make all the difference.
