Description
Motocross Chain – 420DX / 428DX / 520DX High-Performance Off-Road Chains
Motocross riding pushes every component on the motorcycle to its limits—extreme dirt, aggressive acceleration, landing impacts, chain slap, and unpredictable terrain. A reliable Motocross Chain is not only a power-transfer component, but the backbone of consistent off-road performance.
Our DX-series chains (420DX, 428DX, 520DX) are engineered specifically for 125cc–400cc motocross motorcycles, built to outperform standard chains in durability, impact resistance, tensile strength, and sealing performance.
These chains are manufactured using upgraded alloy steel, a dual-layer hardness structure, chromated pins, seamless bushings, and our patented ultra-thin fluoropolymer sealing system. Each specification is designed based on real off-road racing conditions: mud, sand, water, hard landings, and continuous high-rpm loads.
Motocross Chain Engineering & Design Philosophy
Our Motocross Chain series was created to solve two persistent problems in off-road riding:
Weak impact resistance of standard chains
Traditional chains deform or stretch quickly when subjected to landing shock, sudden torque spikes, or sand contamination.
Poor wear resistance in muddy or sandy terrain
Lack of sealing leads to quick grease loss, metal-to-metal friction, and accelerated roller/pin wear.
To overcome this, our engineering team developed:
✔ Ultra-thin fluoropolymer sealing rings
✔ Triple-barrier grease retention
✔ Anti-chip protection structure
✔ Soft-inner / hard-outer dual-layer plate metallurgy
✔ Heat-treated alloy pins with chromium plating
✔ Seamless rollers and bushings to reduce vibration
This combination allows the chain to maintain stable lubrication, even after hundreds of laps in harsh conditions.
420DX / 428DX / 520DX – Application Matching Guide
420DX Motocross Chain
✔ For 50cc–125cc motocross motorcycles
✔ Lightweight load
✔ Average Tensile Strength: 2350 kgf
✔ Ideal for young riders, trail bikes, light MX training
428DX Motocross Chain
✔ For 125cc–150cc off-road bikes✔ Stronger structure, wider chain width
✔ Average Tensile Strength: 3000 kgf
✔ Suitable for mid-power motocross & endurance training
3.520DX Motocross Chain
✔ For 250cc–400cc motocross racing✔ Used in professional MX tracks
✔ Average Tensile Strength: 3950 kgf
✔ Designed for extreme torque, jumps, sand tracks, and racing conditions
Sealed Motocross Chain Performance Advantages
⭐ Ultra-Thin Seal System (3× Chain Life)The fluoropolymer seal prevents:
✔ Mud entry
✔ Lubricant leakage
✔ Metal dust contamination
✔ High-heat grease evaporation
This results in up to 3x longer life compared to unSealed Chains.
Specialized Metallurgy for Off-Road Racing
Each chain plate uses a double-layer hardness structure:- Outer Layer: Extremely hard to resist stone impact
- Inner Layer: Softer to absorb vibration and reduce wear
Reasons Riders Choose Our Motocross Chain
✔ Made for professional racing✔ Resistant to shock, mud, sand, water
✔ Smooth power delivery
✔ Reduced chain noise
✔ Perfect fit for small-clearance motocross bikes
✔ Available in original, gold, blue, red
Conclusion
Our 420DX, 428DX, and 520DX Motocross Chain series is engineered for riders who demand durability, stability, and long-term performance under the harshest off-road conditions. With advanced sealing technology, heat-treated alloy components, and high tensile strength, they are the ideal upgrade for motocross racing and heavy off-road use.
