525RO Sealed Chain
seal chain structure
| Pin | The link connecting the outer links is the central axis of the chain bend. |
| Bushing | The chain plate connected to the inside is the supporting force axis of the pin shaft. |
| Roller | Contact with the sprocket to make the chain roll smoothly. |
| Inner/outer chain link | Together with the pin, it supports the transmission of load and power. |
| Seal Ring | Lubricating grease sealed between the pin and the bushing. |
| lubricating oil | Provide lubrication between pins and bushings to prevent wear and elongation. |
Product data information
| Model | unit | 525RO |
| Pitch-（P) | mm | 15.88 |
| Roller Link width（Min.)-(W) | mm | 7.85 |
| Roller Dia(Max.)-(D) | mm | 10.16 |
| Pin Link Plate Thickness-(T1) | mm | 2.00 |
| Inner link plate Thickness-(T2) | mm | 2.00 |
| Inner Link Plate Heinght-(H) | mm | 14.75 |
| Pin Dia-(d) | mm | 5.07 |
| Overall Width Riv-(L) | mm | 21.75 |
| Overrall Width Con-(G) | mm | 22.95 |
| Minimum Tensile Strength | kgf | 2710 |
| Average Tensile Strength | kfg | 3050 |
| Displacement Application(Max) | cc | 250 |
Built for Pro Riders: Reliable Power and Long-Lasting
The 520RX sealed chain is purpose-built for professional motocross racers who demand precision and performance. It ensures smooth, consistent power delivery across the RPM range, helping riders stay competitive in every lap. With its extended chain life, this chain is as reliable as it is race-ready—perfect for those who push their machines to the edge.
Engineered for 250cc Dirt Bikes with 3050 lbs of Tensile Strength
With an average tensile strength of 3050 lbs, this chain is more
than tough enough to handle the torque of 250cc dirt bikes. Whether you’re navigating tight corners or blasting through rough terrain, the 520RX sealed chain delivers dependable strength and resilience where it matters most. Designed to take a beating and keep performing.
Applications
- motorcycle
Product Advantages
●Engineered for elite motocross professionals, this chain stands out as the lightest sealed-ring MX chain available.
●It’s specifically designed to provide reliable, consistent power delivery while offering an impressively extended lifespan.
●This robust chain boasts an average tensile strength of 3050 lbs and is ideal for dirt bikes with engines up to 250cc.
Chart
Frequently Asked Question
Yes, the minimal wear leads to the least amount of chain stretch over time.
Yes. X-shaped chains are more efficient due to less friction between the seals and the chain plates, resulting in a smoother, more responsive ride.
he chain’s service life is prolonged due to reduced wear and stretch.
The X-ring has less surface contact with the plates, which reduces drag. This results in smoother power delivery and less energy loss during operation.
Special formulated grease, durable sealing rings, solid bushings, and hardened pins work together for continuous lubrication.
Yes. X-ring chains are designed to withstand heavy-duty riding, offering both increased durability and consistent performance under demanding conditions.
