After researching manufacturer specifications, industry standards (DIN, ISO, JIS), and aggregated owner feedback from hundreds of riders, we compared the top motocross chains on the market. Our evaluation focuses on tensile strength, wear resistance, sealing effectiveness, and value. Below are our findings to help you choose the best chain for your riding style and budget.
| Photo | Product | Score | Buy |
|---|---|---|---|
 |
DID ERT2 520 Top Pick 520 pitch, 118 links, tensile strength 8,900 lbs |
9.2 | 🛒 Check Price |
 |
RK Takasago GB520MXZ Runner Up 520 pitch, 120 links, tensile strength 8,600 lbs |
8.9 | 🛒 Check Price |
 |
DID 520VT2 Best Value 520 pitch, 116 links, tensile strength 7,800 lbs |
8.6 | 🛒 Check Price |
 |
Regina Racing RR 520 Premium Choice 520 pitch, 118 links, tensile strength 8,400 lbs |
8.4 | 🛒 Check Price |
 |
RK Racing Chain 520SO Lightweight Option 520 pitch, 120 links, tensile strength 7,500 lbs |
8.1 | 🛒 Check Price |
 |
Sunstar 520 ZX Budget Pick 520 pitch, 116 links, tensile strength 7,000 lbs |
7.8 | 🛒 Check Price |
|
🚗
|
Tusk 520 O-Ring Chain Solid Mid-Range 520 pitch, 120 links, tensile strength 7,200 lbs |
7.5 | 🛒 Check Price |
1. DID ERT2 520: Top Pick
The DID ERT2 520 stands out in our research for its exceptional tensile strength and wear resistance. Specs show a tensile strength of 8,900 lbs, which is among the highest in its class. Owner feedback consistently praises its durability under hard motocross use, with many reporting minimal stretch over several seasons. The nickel plating adds corrosion resistance, a common weak point in cheaper chains.
However, the premium price may not suit budget-conscious riders. For those who ride occasionally or in less demanding conditions, a standard chain might suffice. We recommend this chain for serious racers and frequent riders who prioritize longevity and reliability over cost.
- Nickel-plated side plates resist corrosion and wear
- High-tensile steel pins for extended life
- Sealed O-rings reduce maintenance intervals
Pros: Excellent tensile strength for aggressive riding; Long service life with proper lubrication
Cons: Higher initial investment compared to standard chains
2. RK Takasago GB520MXZ: Runner Up
The RK Takasago GB520MXZ impressed us with its solid construction and X-ring sealing. Specs indicate a tensile strength of 8,600 lbs, close to the top pick. Owner feedback highlights its ability to retain lubrication longer, reducing the need for frequent maintenance. The pre-stretched feature saves time during installation.
On the downside, some riders note it adds a bit of weight, which could affect handling in extreme conditions. It is not the best choice for those seeking the lightest possible chain. We recommend it for motocross enthusiasts who want a durable chain without the top-tier price.
- Heavy-duty side plates for impact resistance
- X-ring design seals lubricant better than O-rings
- Pre-stretched for minimal initial adjustment
Pros: Superior sealing with X-ring technology; Good value for performance
Cons: Slightly heavier than some competitors
3. DID 520VT2: Best Value
The DID 520VT2 offers a compelling balance of performance and affordability. With a tensile strength of 7,800 lbs, it is adequate for most motocross bikes. Owner feedback indicates it holds up well for intermediate riders, with decent wear life when properly maintained. The O-ring seal keeps dirt out effectively.
However, for aggressive racing or heavy bikes, the lower tensile strength may lead to faster stretch. We suggest this chain for riders on a budget or those who ride less frequently. It is not ideal for professional-level use.
- O-ring sealed for dirt and moisture protection
- Heat-treated pins for strength
- Affordable alternative to premium chains
Pros: Strong value for the price; Reliable performance for recreational riding
Cons: Lower tensile strength than top picks
4. Regina Racing RR 520: Premium Choice
The Regina Racing RR 520 is a well-regarded premium chain. Specs show a tensile strength of 8,400 lbs, and it features shot-peened pins that reduce fatigue. Owner feedback often mentions its smooth running and consistent performance. The Italian craftsmanship is evident in the tight tolerances.
That said, the high cost puts it out of reach for many. We also note that some users report faster wear if not lubricated meticulously. This chain is best for dedicated racers who demand top-tier quality and are willing to maintain it accordingly. Casual riders may find better value elsewhere.
- Italian-made with high-quality steel
- Shot-peened pins for fatigue resistance
- Sealed O-rings for low maintenance
Pros: Excellent build quality; Smooth operation
Cons: Premium price may not justify for casual riders
5. RK Racing Chain 520SO: Lightweight Option
The RK Racing Chain 520SO is designed for weight-conscious riders. Its solid bushing construction reduces friction and mass, which can improve throttle response. However, with a tensile strength of 7,500 lbs and no sealing, it is less durable than sealed options. Owner feedback indicates it requires frequent cleaning and lubrication to avoid rapid wear.
This chain is not suitable for muddy or sandy tracks where dirt ingress is high. It is best for dry conditions or riders who prioritize weight savings and are diligent about maintenance. For most motocross riders, a sealed chain offers better longevity.
- Lightweight design reduces rotating mass
- Solid bushing for lower friction
- Unsealed chain requires frequent lubrication
Pros: Reduces weight for better handling; Low friction for performance
Cons: Unsealed design needs more maintenance; Lower durability in harsh conditions
6. Sunstar 520 ZX: Budget Pick
The Sunstar 520 ZX is a budget-friendly chain that meets basic needs. With a tensile strength of 7,000 lbs, it is suitable for smaller-displacement bikes or recreational riding. Owner feedback notes it works fine for light trail riding but may not hold up to hard motocross abuse. The O-ring seal offers some protection.
We caution against using this chain on high-horsepower bikes or for racing. It is best for beginners or occasional riders who want a replaceable chain without a big investment. For serious riding, consider a higher-tier option.
- Cost-effective option for casual riders
- Standard O-ring seal
- Basic steel construction
Pros: Very affordable; Adequate for light use
Cons: Lower tensile strength limits use; May stretch faster under load
7. Tusk 520 O-Ring Chain: Solid Mid-Range
The Tusk 520 O-Ring Chain offers a reasonable set of features at a mid-range price. Specs show a tensile strength of 7,200 lbs and an O-ring seal. Owner feedback is mixed: some report satisfactory performance, while others mention early stretching or stiff links out of the box. This suggests occasional quality control issues.
We recommend this chain for riders on a tight budget who need a sealed chain. However, for reliability, we suggest inspecting it carefully upon receipt. It is not our top recommendation for competitive use, but it can work for casual riding.
- O-ring sealed for dirt resistance
- Heat-treated pins
- Available in multiple link counts
Pros: Good value for the features; Decent sealing
Cons: Inconsistent quality control reported; Not as strong as premium chains
Frequently Asked Questions
What chain size do I need for my motocross bike?
Most motocross bikes use a 520 pitch chain. Check your owner’s manual for the correct length (number of links) and pitch. Common sizes are 520, 525, and 530. Using the wrong size can cause poor fitment or safety issues.
How often should I replace my motocross chain?
Replace your chain when it shows excessive wear, such as uneven stretching, stiff links, or damaged rollers. A general rule is every 20-30 hours of hard riding, but inspect regularly. A worn chain can damage sprockets and compromise safety.
Are O-ring chains better than non-sealed chains?
O-ring chains retain lubrication longer and keep dirt out, reducing maintenance and extending life. They are generally preferred for motocross due to harsh conditions. Non-sealed chains are lighter but require frequent cleaning and lubrication.
What is tensile strength and why does it matter?
Tensile strength is the maximum load a chain can withstand before breaking. Higher tensile strength means greater durability and safety, especially for powerful bikes. Look for chains with at least 7,000 lbs for motocross.
Can I use a street bike chain on my motocross bike?
Street bike chains may lack the sealing and impact resistance needed for off-road use. Motocross chains are designed to handle dirt, mud, and higher stress. It is best to use a chain specifically rated for motocross.
Our Verdict
After our research and comparison, the DID ERT2 520 stands out as the top pick for its exceptional tensile strength, durability, and owner satisfaction. For a slightly lower price, the RK Takasago GB520MXZ is an excellent runner-up with superior sealing. Choose based on your budget and riding intensity.
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