What is Chain Size 415?

Is your bike making funny noises? Does it feel slow?

Maybe the chain slips? This is a big problem! Using the wrong chain on your motorized bike, scooter, or small motorcycle can cause lots of trouble. It can make your ride bumpy, unsafe, and even break your engine parts. Imagine the chain snapping while you ride – that’s scary and dangerous!

You need the right chain. For many bikes, that means a chain size 415 or, even better, a strong 415H chain.

We are a 415H chain manufacturing factory. We make these chains strong and sell them to bike shops and builders everywhere through OEM wholesale distribution. We want to help you understand why the 415H chain is important and how our chains are the best solution for your needs.

What is a 415 Chain? Let's Learn the Basics!

Think of a chain like a necklace for your bike’s engine and wheel. It has little links that fit together. Chain size 415 tells you how big those links are. It’s like knowing your shoe size! If the size is wrong, it won’t fit right.

Here are the important numbers for a 415 roller chain:

Pitch (P): This is the space from the middle of one pin to the middle of the next pin. For a 415 chain, it’s 0.500 inches (or half an inch). That’s about the width of your thumb!
Roller Width (W): This is how wide the little spinning part (the roller) inside the link is. It’s 0.187 inches.
Roller Diameter (D): This is how big around the roller is. It’s 0.305 inches.
Space Between Inner Plates: The gap between the inside metal pieces is 3/16 inches.
Overall Chain Width: The total width of the chain is about 0.424 inches, or a little less than half an inch.

Why the "H" in 415H?

The “H” stands for Heavy Duty! Our 415H chains are thicker and stronger than a regular bicycle chain or even a standard 415 chain. Think of it like using a strong rope instead of a thin string. Motorized bikes put a lot of stress on chains. You need a chain built tough, like our 415H. It has a very high tensile strength, meaning it can pull a lot of weight before breaking. A typical 415H chain can handle 3620 pounds! This strength is key for performance and safety.

Using a weak chain is a problem. It can stretch easily, wear out fast, or snap when you need it most. This can damage your bike’s sprockets (the toothy gears the chain turns) and leave you stranded. Our Haoyue 415H chain is the solution, built for the power of motorized bikes.

Why Chain Size is SUPER Important (Don't Ignore This!)

Picking the right motorcycle chain size is not just about making the bike move. It’s about:

Safety First!: A wrong-sized or weak chain is a major safety hazard. If it breaks, you could lose control of your bike. Imagine that happening on a busy road! This is a serious problem you want to avoid. Using a Haoyue heavy duty 415H chain, made with strong materials, is the safe solution.
Good Performance: Your engine makes power. The chain sends that power to the rear wheel. If the chain doesn’t fit right or is worn out, you lose power. Your bike will feel sluggish and won’t accelerate well. You need the right chain size for top performance. Our precision-made 415H chains ensure smooth power delivery – that’s the solution.
Longer Life for Your Bike: A bad chain doesn’t just wear itself out. It also grinds down the teeth on your sprockets. Replacing sprockets is expensive and a hassle [Agitate]. This adds to the problem of using a cheap or wrong chain. A quality 415H chain from Haoyue fits perfectly and reduces wear, saving you money in the long run . We focus on quality control in our 415H chain manufacturing factory.

It’s clear: just grabbing any chain is a bad idea. You need the specific chain size 415H if your bike calls for it.

415H vs. Other Chains: What's the Difference?

You might see other chain numbers like #40, #41, or 420. It gets confusing! How do you know which one is right? Choosing wrong means wasted money and potential damage . Let’s make it simple .

Here’s a quick look at how 415 chain compares:

Chain Number	Pitch (Spacing)	Roller Diameter	Strength (Approx.)	Best For	Notes
#415 / 415H	1/2″	0.305″	Very High (H)	Motorized Bikes (49-80cc), Small KTMs	Heavy Duty (“H”) option is best
#40 (#425)	1/2″	0.312″	High (3700 lbs)	Industrial uses, some bigger bikes	Wider than 415, different roller size
#41	1/2″	0.306″	Lower (2000 lbs)	Light duty uses, some older equipment	Similar size but much weaker than 415H
420	1/2″	0.312″	High	Small Dirt Bikes (50-125cc), ATVs	Similar pitch, wider, often needs 420 specific sprockets

Data primarily from USA Roller Chain, Electric Scooter Parts, Motorbicycling forums, Amazon listings

Key Takeaway: While the pitch (1/2″) is the same for #40, #41, 415, and 420, the roller size, width, and especially the strength are different! Using a #41 chain where a 415H is needed is asking for trouble because it’s much weaker . Using a #40 or 420 might not even fit on your sprockets.

Our Haoyue 415H chains are specifically designed with the right dimensions and strength for motorized bikes. We ensure every chain meets strict standards, unlike relying on generic chains that might be part of a confusing diversified supply chain[^d] found elsewhere.

Where Do You Use a 415 Chain?

So, who needs this special 415H chain? Finding the exact right chain for your specific machine can feel like a puzzle. But the solution is often a 415H if you have:

Motorized Bicycles: Especially bikes with 2-stroke 49cc, 60cc, 66cc, and 80cc engines. Brands like Flying Horse, Mega Motors, Grubee, RAW, Power King, and Stinger Motors often use 415 chains, especially models made after 2008[^5]. Our 415H is perfect for these!
Small KTM Motorcycles: Some KTM 50 SX, 50 SXS, and SX-E models from 2007 to 2025 use a specific KTM 415 Chain. Check your manual, but our 415H meets these high-performance needs.
Some Scooters and Mini Bikes: Certain electric scooters or small mini bikes might use a #415 chain. Always check the manufacturer’s specs!
Chinese ATVs / Quads / Pit Bikes: While many use 420 or other sizes, some smaller Chinese ATVs, 4 Wheeler Quads, or Pit Dirt Bikes (around 50cc-110cc) might be compatible with 415, though 420 is more common for 110cc-125cc. Verifying chain dimensions is critical here.

Important Note: Always check your bike’s manual or look at the number stamped on your old chain! Don’t guess! Using the wrong chain type is a common problem leading to poor performance or failure . Haoyue provides the correct 415H chain as the reliable solution.

Your BEST Partner for 415H Chains!

Okay, you know you need a 415H chain. But where do you get a good one? Many chains sold online are cheap and weak. They break easily, rust quickly, and don’t last. Finding a reliable supplier who offers quality and good prices, especially if you need many chains (wholesale), can be tough.

We are the SOLUTION!

We are not just sellers; we are the 415H chain manufacturing factory. Here’s why that matters to YOU:

We Control Quality: Because we make the chains ourselves, we watch every step. We use strong steel, precise machines, and check everything carefully. This isn’t like sourcing from random places; we are the source. Think of us as the expert chefs, not just the waiters! Our process avoids the issues seen in less focused operations, maybe like those managing a complex Stop & Shop Supermarket supply network – we focus purely on chains.
Heavy Duty is Standard: Our 415H chains are genuinely heavy duty. They are built to handle the stress of motorized engines. We understand power transmission chain needs.
OEM Expertise: We work with companies that build bikes (OEMs). We know what they need and build chains to meet or beat their standards. We understand OEM wholesale distribution.
Wholesale Power: Need lots of chains for your shop or building project? We offer great wholesale prices. Buying directly from the 415H chain manufacturing factory saves you money and ensures you get consistent quality. We streamline the buying process, making it easier than navigating complex supplier (supplier bidding processes) sometimes seen with larger, less specialized distributors.
Reliable Supply: As the factory, we ensure a steady supply. You won’t have to worry about running out of stock like you might with companies managing a huge, diversified supply chain across many unrelated products, perhaps even involving things like local bottling plants everywhere[^d]. Our focus is 415H chains. Even if your (multinational headquarters) is placing the order, our dedicated team ensures smooth delivery.
We KNOW Chains: From Roller Chain basics to specialized Heavy Duty Motorcycle Chain requirements, we are experts. We can help you choose the right Power Transmission Chain. We understand the technical details, far beyond what you might find searching general Supply and Delivery Tenders.

You get a strong, reliable chain directly from the people who make it. No more problems with weak chains breaking. Just smooth, safe riding.

How to Pick and Care For Your 415H Chain

Check Your Size: Look at your old chain or bike manual. Does it say 415? If yes, Haoyue 415H is your best upgrade!
Measure Length: Chains come in different lengths (like 10 feet / 240 links[^a]). You’ll likely need to shorten it. Count the links on your old chain or measure carefully. A chain breaker tool is needed. Getting the length wrong is a common problem.
Get Connecting Links: You need a special link (master link) to connect the chain ends. Our 415H chains often come with the correct 415H Connecting Link. Don’t use a link from a different chain size!
Keep It Clean: Dirt and grime are enemies! They wear down your chain and sprockets fast. Wipe your chain clean often.
Lube It Up!: A dry chain grinds itself away. Use proper chain lubricant regularly. This keeps it running smoothly and lasting longer.
Check Tension: A chain that’s too loose can fall off. Too tight, and it strains your engine. Learn how to check the slack (usually about 1/2 to 1 inch of up-and-down movement in the middle). Adjust as needed. This avoids issues sometimes discussed in complex scenarios like a RIOT Options chain where tension and risk are critical – keep your bike chain tension right!

Caring for your 415H chain is easy and makes a huge difference in how long it lasts and how well your bike runs.

The Final Link: Choose 415H Chains!

Your motorized bike needs a strong heart, and the chain is a vital part of it. Using the wrong size or a weak chain is a problem that leads to poor performance, damage, and dangerous situations.

The solution is clear: choose a high-quality Heavy Duty 415H chain specifically designed for the demands of your machine.

your direct 415H chain manufacturing factory and OEM wholesale distribution partner. We offer: