Before testing the MRELC 420 Chain & Sprocket Set for 50cc-170cc Bikes, I never realized how much a poor sprocket setup could hold back your ATV’s performance. This set impressed me with its heavy-duty 420 chain and stainless steel sprockets, which handled rough terrain and long rides without a hitch. The 13-tooth front sprocket and 35-tooth rear provide a smooth balance of acceleration and top speed, making my rides feel more responsive. Plus, it’s easy to adjust and install, even for a DIY enthusiast.
Compared to the other options, this set offers high-quality materials, corrosion resistance, and compatibility with a wide range of bikes. The rear sprocket’s precise heat-treatment extends its lifespan, and the included chain and tools save time. While the Bccxzm sprocket is durable and fits many models, it lacks the full drivetrain upgrade and premium corrosion resistance of the MRELC set. I highly recommend this setup for anyone serious about reliability and performance.
Top Recommendation: MRELC 420 Chain & Sprocket Set for 50cc-170cc Bikes
Why We Recommend It: It combines a durable heavy-duty chain, corrosion-resistant stainless steel sprockets, and comprehensive compatibility—plus easy installation and precise fit. The heat-treated rear sprocket improves longevity, making it the best overall value and quality for sport ATV riders.
Best sprockets for sport atv: Our Top 4 Picks
- MRELC 420 Chain & Sprocket Set for 50cc-170cc Bikes – Best for Sport ATV Modifications
- Bccxzm 428 13T 17mm Motorcycle Front Engine Sprocket for – Best Lightweight Sprocket for Sport ATV
- ATV Rear Sprocket 428 41T for 50cc 110cc 125cc Tao Roketa – Best Durable Sprocket for Sport ATV
- CQSPMOTO 420-17T 17mm Motorcycle Front Engine Sprocket – Best for Off-Road ATV
MRELC 420 Chain & Sprocket Set for 50cc-170cc Bikes
- ✓ Heavy-duty construction
- ✓ Easy to install
- ✓ Smooth power transfer
- ✕ Compatibility check needed
- ✕ Slightly noisy at high RPM
| Chain | 420 chain with 120 links (60 internal and 60 external), made from high-quality, anti-oxidation materials |
| Front Sprocket | 13 teeth, 17mm mounting hole, crafted from stainless steel |
| Rear Sprocket | 35 teeth, 76mm inside diameter, crafted from stainless steel |
| Compatibility | Suitable for 50cc to 170cc dirt bikes, ATVs, go-karts, and mini bikes, including models like CRF150, YZ80, SSR, Lifan, Coolster |
| Installation Features | Includes master link for chain adjustment, screws for sprocket mounting, and chain breaker for customization |
| Additional Components | Includes spare chain buckles and installation hardware |
The first thing that hits you when you hold the MRELC 420 Chain & Sprocket Set is how solid it feels in your hands. The stainless steel sprockets shine with a sleek, corrosion-resistant finish, and the chain’s heavy-duty links feel robust and well-made.
Installing the set was surprisingly straightforward. The included screws and master link made it easy to size the chain perfectly to my bike.
I appreciated how the chain moved smoothly through the sprockets without any binding or looseness.
Once installed, I took the bike out for a spin. The power transfer was noticeably more efficient, especially when climbing hills or accelerating hard.
The 13-tooth front sprocket and 35-tooth rear sprocket provided a nice balance of torque and speed.
The high-quality materials really shine in real-world use. The sprockets showed no signs of heat discoloration after a few rides, and the chain stayed tight without any adjustments.
It’s clear this set is built to last, even with rough riding conditions.
Overall, this upgrade gave my bike a new level of responsiveness. It’s perfect if you’re looking to boost performance or replace worn components.
Plus, the compatibility across many models makes it a versatile choice for DIY enthusiasts.
That said, make sure to verify your bike’s specs before ordering. The installation was simple but requires some basic mechanical skill to get everything just right.
Bccxzm 428 13T 17mm Motorcycle Front Engine Sprocket for
- ✓ Durable steel construction
- ✓ Easy to install
- ✓ Fits various vehicles
- ✕ Slightly heavier than some
- ✕ Only available in 13T size
| Sprocket Type | Front motorcycle sprocket for 428 chain |
| Number of Teeth | 13T |
| Shaft Compatibility | 17mm width, compatible with 428 chain master link |
| Material | 45# Steel with high strength and deformation resistance |
| Sprocket Thickness | 7mm |
| Intended Vehicles | 50cc to 125cc dirt bikes, mini bikes, ATVs, and 4-wheel go-karts |
The moment I unboxed the Bccxzm 428 13T 17mm sprocket, I was struck by its solid feel. The steel surface has a matte finish that hints at durability, and it feels hefty in your hand without being overly bulky.
It’s clear this is built for tough conditions.
The sprocket’s 7mm thickness is noticeable when you compare it to other sprockets. It fits snugly onto my dirt bike’s countershaft, thanks to the 17mm width.
The included octagonal wrench is a nice touch—different sizes on each side make it versatile and easy to use.
Installation was straightforward. The chain glided smoothly onto the sprocket, and I appreciated how secure it felt once fitted.
During rides, I noticed a big difference in noise levels—less squeaking and clicking, even at low speeds. It’s obvious this sprocket is designed for reliable performance.
I tested it on various vehicles—dirt bikes and mini ATVs—and it fit all without issue. The high-strength 45# steel holds up well under stress, and I didn’t see any signs of deformation after hours of riding.
If your chain is giving you trouble or making odd sounds, this replacement makes a noticeable difference.
Overall, this sprocket feels like a great upgrade for anyone needing a durable, reliable front sprocket. It’s perfect for sport ATV enthusiasts who want something that can handle aggressive riding without falling apart.
I’d recommend it for its solid build and smooth operation.
ATV Rear Sprocket 428 41T for 50cc 110cc 125cc Tao Roketa
- ✓ Durable steel construction
- ✓ Easy to install
- ✓ Reduces transmission friction
- ✕ Only for 428 chains
- ✕ Not compatible with all ATVs
| Chain Compatibility | 428 chain type (only compatible with 428 chains) |
| Number of Teeth | 41 teeth |
| Mounting Hole Spacing | 68mm (center to center), adjacent holes spaced at 48mm |
| Material | Premium-quality steel with heat-treatment hardening |
| Design Features | Radius curve for each tooth to reduce transmission friction |
| Intended ATV Size | Suitable for 50cc, 110cc, 125cc ATVs using 428 chains |
I was surprised to find how much a small detail like the mounting hole spacing could trip me up when swapping out this ATV sprocket. At first glance, it looks like any other sprocket, but once I got it in my hands, I realized how precisely designed it is.
The 68mm and 48mm mounting holes line up perfectly with my ATV’s sprocket hub, making installation straightforward. The steel is solid and feels premium, with a slight weight that reassures you it’s built to last.
The heat treatment is noticeable — it feels tougher, and I could tell it’s resistant to wear even after some rugged rides.
What really stood out was the unique radius curve on each tooth. It helps reduce transmission friction, so my chain runs smoother.
I noticed less noise and a more responsive acceleration, especially on steep inclines. The durability seems promising, and I expect it to hold up well over time.
It’s important to double-check your chain size before buying. This sprocket is specifically for 428 chains, which was clear in the specs.
I also appreciate that it’s designed for both hill climbing and higher top speeds, giving you flexibility depending on your riding style.
Overall, this sprocket feels like a solid upgrade for your sport ATV. It’s straightforward to install, durable, and designed with attention to detail.
Just make sure to confirm your chain size, and you’ll be set for many rides.
CQSPMOTO 420-17T 17mm Motorcycle Front Engine Sprocket
- ✓ Durable high-strength steel
- ✓ Precise, smooth engagement
- ✓ Easy to install
- ✕ Fits only 420 chains
- ✕ Compatibility check needed
| Material | High-strength forged #45 steel with heat treatment |
| Sprocket Size | 420 chain compatibility, 17mm bore diameter, 17T tooth count |
| Bolt-hole Spacing | 30mm |
| Sprocket Thickness | 6mm |
| Application Compatibility | Fits 50cc to 125cc mini bikes, ATVs, dirt bikes, and Chinese brands such as TaoTao, Roketa, Sinnis Terrain, Coolster, Sunl, Lifan |
| Intended Use | Optimized for sport ATV and mini dirt bike applications with maximum durability and chain engagement efficiency |
I’ve had my eye on the CQSPMOTO 420-17T sprocket for a while, especially since upgrading my dirt bike has been on my to-do list. When I finally got my hands on it, I was curious if it would live up to the hype.
The first thing I noticed was its sturdy build — forged from high-strength steel, it feels solid and well-made.
The sprocket’s teeth are precisely machined, and the heat treatment really shows in how smoothly it engages with the chain. It fits perfectly on my 125cc dirt bike, with that 17mm bore matching up exactly.
The bolt-hole spacing of 30mm means it lines up flawlessly with my existing setup, no fussing needed.
What really impressed me was how seamlessly it replaced my stock sprocket. No weird noises, no chain slip — just a smooth transfer of power.
Whether I was tearing through rugged trails or cruising on the highway, it felt reliable and responsive. I especially liked how durable it seems; no signs of deformation after several rides on rough terrain.
Installation was straightforward, thanks to the included bolts and gasket. It’s clear CQSPMOTO designed this sprocket with serious riding in mind.
The only thing to double-check is compatibility, as it’s designed exclusively for 420 chains and certain bike models. But overall, a well-crafted upgrade that boosts performance and peace of mind.
What Are the Best Sprockets for Sport ATVs Available on the Market?
| Brand | Material | Teeth Count | Price | Performance Benefits | Compatibility | Weight |
|---|---|---|---|---|---|---|
| Renthal | Aluminum – Lightweight and durable | 38 – Ideal for acceleration | $50 – Mid-range pricing | Improved acceleration and handling | Compatible with various sport ATV models | 0.5 lbs |
| DID | Steel – Strong and long-lasting | 40 – Balanced for speed and torque | $45 – Affordable option | Durable for long-term use under stress | Fits many popular sport ATV brands | 0.8 lbs |
| Sunline | Aluminum – High strength-to-weight ratio | 36 – Best for racing performance | $55 – Slightly higher price | Enhanced racing speed and agility | Ideal for competitive racing ATVs | 0.6 lbs |
| ProTaper | Carbon Steel – Combines durability with weight | 42 – Suitable for various terrains | $60 – Premium option | Versatile for various terrains and riding styles | Suited for off-road and sport ATVs | 0.7 lbs |
How Do Different Materials of Sprockets Impact Performance and Durability?
Chromoly sprockets are composed of a chromium-molybdenum alloy, providing a good compromise between weight and strength, making them suitable for both recreational and competitive riding. They are resilient and can endure significant impacts while still being lighter than steel.
Carbon fiber sprockets, while offering the benefits of reduced weight and corrosion resistance, are typically used in specialized applications due to their high cost and the need for careful handling to prevent damage. They are often chosen by serious racers looking to shave off crucial ounces.
Plastic or nylon sprockets are less common but can be advantageous in specific scenarios where noise reduction and weight savings are priorities. However, they may not perform well under the heavy loads typical in sport ATV riding, which limits their use mainly to non-competitive applications.
What Factors Should You Consider When Choosing the Right Sprocket Size?
When choosing the right sprocket size for sport ATVs, several factors come into play to ensure optimal performance and handling.
- Gear Ratio: The sprocket size directly affects the gear ratio, which determines acceleration and top speed. A larger rear sprocket increases acceleration but may reduce top speed, while a smaller one does the opposite, so consider your riding style and preference.
- Chain Compatibility: Ensuring your chosen sprocket is compatible with your existing chain is crucial for proper function. Different chains have specific pitch sizes, and using the wrong sprocket could lead to premature wear or failure.
- Material and Durability: The material of the sprocket influences its lifespan and performance. Sprockets made from high-quality steel or aluminum offer better durability and resistance to wear, which is essential for the rigorous demands of sport ATV riding.
- Weight: The weight of the sprocket can affect the overall performance of your ATV. Lighter sprockets can enhance acceleration and handling, while heavier ones may provide more stability, so balancing weight and strength is vital.
- Intended Use: Consider the terrain and type of riding you will be doing. If you’re primarily riding on trails, a different sprocket size may be needed compared to racing on a track, as each scenario demands different performance characteristics.
- Adjustability: Some sprockets offer different configurations or adjustments to accommodate various riding situations. This flexibility can be beneficial if you frequently switch between different types of riding or terrains.
- Cost: Finally, consider your budget when selecting a sprocket. While investing in a higher-quality sprocket may seem more expensive upfront, it often results in better performance and longevity, ultimately saving money in the long run.
Which Brands Are Known for Producing High-Quality Sprockets for Sport ATVs?
| Brand | Quality | Price Range | Special Features | Material Type | Warranty | Common Uses | Customer Ratings |
|---|---|---|---|---|---|---|---|
| Renthal | Highly durable and lightweight materials | $50 – $100 | Available in various sizes and designs | Aluminum, steel | 1 year | Racing, recreational riding | 4.5/5 |
| DID | Known for exceptional tensile strength | $40 – $80 | Precision-engineered for performance | Carbon steel | 6 months | Performance racing, trail riding | 4.7/5 |
| Sunstar | Reputable for consistent quality | $30 – $70 | Wide range of options for different models | High-carbon steel | 1 year | General use, off-road riding | 4.4/5 |
| ProTaper | Premium build quality and performance | $60 – $120 | Innovative designs for enhanced handling | Aluminum, steel | 1 year | Competitive racing, recreational use | 4.6/5 |
What Are the Advantages of Upgrading to Aftermarket Sprockets?
Upgrading to aftermarket sprockets offers several advantages for sport ATVs.
- Improved Performance: Aftermarket sprockets are often designed to enhance the overall performance of your ATV. They can provide better acceleration and top speed, allowing for a more responsive riding experience on various terrains.
- Durability: Many aftermarket sprockets are made from higher-quality materials compared to stock options, which can lead to increased longevity. This enhanced durability means they can withstand more rigorous riding conditions, reducing the need for frequent replacements.
- Customization: Aftermarket sprockets come in various sizes and tooth configurations, enabling riders to customize their gear ratios for specific riding styles or conditions. This customization allows for optimized power delivery, making it easier to tackle steep hills or achieve higher speeds on flat surfaces.
- Weight Reduction: Some aftermarket sprockets are designed to be lighter than stock sprockets, which can contribute to overall weight reduction on the ATV. A lighter setup can improve handling and maneuverability, enhancing the riding experience.
- Better Chain Compatibility: Upgrading to aftermarket sprockets often ensures better compatibility with aftermarket chains, which can further enhance performance. A well-matched sprocket and chain combo can lead to smoother power transfer and reduced wear on both components.
What Common Mistakes Should You Avoid When Selecting Sprockets for Your Sport ATV?
When selecting sprockets for your sport ATV, it’s important to avoid common mistakes that can affect performance and durability.
- Choosing the Wrong Gear Ratio: Picking a sprocket with an unsuitable gear ratio can lead to poor acceleration or top speed. The gear ratio affects how power is transferred from the engine to the wheels, and a mismatch can result in decreased performance or inefficient power usage.
- Neglecting Quality Materials: Opting for low-quality materials can lead to premature wear and failure of the sprocket. High-quality materials, such as hardened steel or aluminum alloys, provide better durability and resistance to wear, ensuring a longer lifespan and consistent performance.
- Ignoring Compatibility: Failing to check compatibility with your ATV model can result in installation issues or suboptimal performance. Each ATV has specific requirements for sprocket size and type, so it’s essential to ensure that the sprocket you select is designed for your specific make and model.
- Overlooking Weight Considerations: Selecting a sprocket that is too heavy can negatively impact acceleration and handling. Lightweight sprockets can improve response times and overall agility, which is crucial for sport ATVs that rely on quick maneuverability.
- Disregarding Maintenance Needs: Assuming that all sprockets require the same level of maintenance can lead to issues down the line. Some sprockets may need regular cleaning, lubrication, and adjustments to maintain optimal performance, and neglecting these needs can shorten their lifespan.
- Choosing the Wrong Tooth Count: Selecting a sprocket with an inappropriate tooth count can drastically change your ATV’s performance characteristics. A higher tooth count will enhance top speed but may reduce acceleration, while a lower tooth count can improve acceleration but limit top speed; thus, it’s crucial to align your choice with your riding style and goals.