520DX Motocross Chain for 250cc–400cc Bikes
520DX Motocross Chain Product data information
| Model No | Pitch (mm) P | Roller Link Width (Min.) (mm) W | Roller Diameter (Max.) (mm) D | Pin Link Plate Thickness (mm) T1 | Inner Link Plate Thickness (mm) T2 | Inner Link Plate Height (mm) H | Pin Diameter (mm) d | Overall Width Riv. (mm) L | Overall Width Con. (mm) G | Minimum Tensile Strength (kgf) | Average Tensile Strength (kgf) | Displacement Application (Max.) (cc) |
| 520DX | 15.875 | 6.25 | 10.16 | 2 | 2 | 14.85 | 5.14 | 17.35 | 19.35 | 3500 | 3950 | 400 |
The 520DX Motocrosskedja is engineered for riders who demand maximum strength, long-term durability, and race-ready performance on 250cc–400cc dirt bikes. Built with upgraded alloy steel, seamless bushings, and an advanced thin O-ring sealing system, this chain delivers exceptional wear resistance and reliable power transfer across mud, sand, water, and rocky terrain.
Designed for both competitive riders and demanding recreational users, the 520DX offers the ideal balance of strength, lifespan, and smooth operation.
What Is the 520DX Motocross Chain Designed For?
This chain is built for high-output off-road motorcycles where torque, impact vibration, and environmental contamination are extreme.
Its structural metallurgy and sealing design significantly outperform standard non-sealed or economy chains.
Recommended engine range: 125cc to 400cc
Average tensile strength: 3950 lbs
Color options: Original / Gold / Blue / Red
Application: MX, Enduro, Trail, Desert, Rally Off-Road
Key Features & Advantages
High-Strength Alloy Steel Structure
Every component is built from upgraded alloy steel to handle intense off-road loads:
- Thickened pins for improved tensile strength
- Seamless bushings for smoother rotation
- Precision-formed rollers for reduced dynamic friction
- Reinforced plates with factory heat treatment
The chain maintains structural stability during jumps, hard acceleration, and high-speed corner exits.
Triple-Barrier Thin O-Ring Seal
The 520DX uses an advanced, ultra-thin fluoropolymer sealing ring designed specifically for off-road bikes with limited chain clearances.
The sealing system provides:
- 3× lifespan compared to non-sealed chains
- Protection against sand, mud, water, and fine dust
- Consistent lubrication retention
- Reduced start-up friction thanks to smaller seal contact points
Anti-chip surface geometry prevents metal particle grinding inside the chain, significantly improving service life.
Dual-Layer Metallurgical Treatment
The chain uses a specially developed two-layer metallurgical design:
- Outer layer: extremely hard to resist abrasion
- Inner layer: slightly softer to absorb shock loads
This dual-structure improves fatigue resistance and makes the chain safer under sudden torque spikes.
Stable Power Delivery on High-Torque Engines
With a tested tensile strength of 3950 lbs, the 520DX provides a stable and efficient power transfer path even under:
- Heavy loads
- High-speed vibration
- Rapid clutch engagement
- Continuous racing cycles
This makes it suitable for both professional and amateur racing environments.
Why Riders Prefer the 520DX Motocross Chain
- Long-lasting performance in mud, sand, and wet terrain
- Reduced maintenance frequency
- Better pin–bushing lubrication retention
- Smooth and efficient rotation at high RPM
- High durability for long hours of off-road riding
- Available in high-appeal color finishes for style-conscious riders
Tekniska specifikationer
| Specifikation | Detaljer |
|---|---|
| Modell | 520DX Motocross Chain |
| Recommended Displacement | 125cc–400cc |
| Genomsnittlig draghållfasthet | 3950 lbs |
| Material | Upgraded alloy steel |
| Tätningstyp | Thin O-Ring (triple barrier) |
| Roller/Bushing Structure | Seamless, precision-matched |
| Color Options | Original / Gold / Blue / Red |
| Ansökningar | Motocross, Enduro, Trail, Off-Road Racing
|
Engineered for Harsh Off-Road Conditions
The 520DX is built for environments where lesser chains fail:
- Muddy forest tracks
- Sandy motocross circuits
- Rocky or uneven desert terrain
- High-humidity and water-crossing environments
Its sealed design maintains internal lubrication even after long exposure to debris, helping riders stay on track longer with fewer chain replacements.
Factory-Direct Manufacturing Advantage
As a professional motorcycle chain manufacturer in China, we offer:
- Consistent large-volume production
- OEM customization (color, length, packaging)
- Strict quality control from raw steel to final assembly
- Competitive B2B pricing for global distributors
- Reliable export logistics
Our chains serve riders, dealers, and racing teams across multiple international markets.
Vanliga frågor
The 520DX is engineered for 250cc to 400cc motocross and off-road motorcycles.
It offers an average maximum tensile strength of 3950 lbs, ideal for high-impact terrain.
Yes. It features an ultra-thin O-ring seal with triple-barrier grease protection and anti-chip technology.
In muddy or sandy conditions, the 520DX can last up to 3× longer than non-sealed chains.
Upgraded alloy steel, chromated axles, seamless rollers, and heat-treated components for maximum durability.
A snap-on master link is included for fast, secure installation.
