The EK 420 H/Duty Chain 136L (20) is built for riders who demand unwavering reliability under real-world, high-torque conditions. This heavy-duty 420 chain delivers proven strength and consistent performance across demanding street, trail, and light track use, making it a trusted upgrade when your current chain is stretched, worn, or slipping under load.

Why this chain stands out

• Robust build for high-torque applications—engineered with thicker plates and reinforced pins to better resist bending and wear when you’re pushing hard on acceleration and aggressive gearing.
• Precision manufacturing—carefully machined components and tight tolerances ensure smooth rotation, predictable engagement with your sprockets, and reduced stretch over time.
• Corrosion-resistant finish—a protective coating is designed to stand up to weather, dust, and grime, helping your chain look and perform well longer between cleanings.
• 136-link length (136L)—the longer chain helps accommodate common mid- to high-torque setups, providing reliable service life on a broad range of 420-pitch motorcycles and ATVs.
• Compatibility with standard 420 sprockets—built to pair with widely available 420 sprockets and master-link configurations, making installation straightforward for DIY enthusiasts and professional shops alike.

Who should consider the EK 420 H/Duty Chain 136L (20)

• Riders upgrading a worn or stretched chain on street and light-track bikes who need a durable, long-lasting replacement.
• Enduro, dual-sport, and ATV riders seeking a chain that maintains performance under rugged riding conditions and higher-load scenarios.
• Owners of bikes with aggressive gearing or high-torque engines who notice chain elongation and want a solution that preserves power transfer to the rear wheel.

Practical benefits and use cases

With the EK 420 H/Duty Chain, you’ll experience steadier power delivery, reduced risk of sudden chain slip under load, and improved longevity compared with standard-duty chains under the same riding conditions. It shines in scenarios like:

• Aggressive acceleration at merging lanes or on twisty mountain roads where reliable chain engagement matters.
• Riding in dusty or muddy environments where a robust chain can better stand up to debris and grit.
• Extended-use weekends on dirt roads or light off-road sessions where chain wear can accumulate quickly.
• Rebuilding a high-mileage bike that previously showed signs of chain stretch or skip under torque.

Maintenance and longevity tips

• Keep the chain well-lubricated with a quality motorcycle chain lubricant appropriate for your climate and riding style to minimize friction and wear.
• Regularly check chain tension and alignment to ensure even wear across the 136L length and prevent sprocket damage.
• Clean the chain to remove dirt and grit that can accelerate abrasion, especially after riding in wet or dusty conditions.
• Inspect for tight pins, stiff links, and signs of excessive wear or rust, and replace the chain promptly if performance is compromised.

Why choose EK for your chain needs

EK is known for engineering durability into every link, emphasizing strength, precision, and reliability. The 420 H/Duty Chain 136L (20) reflects that focus, delivering a solution that riders can trust across varied conditions—from daily commuting to weekend adventures. By choosing this chain, you’re aligning with a product designed to maintain power transfer efficiently, minimize downtime, and extend the interval between major drivetrain maintenance when paired with the right sprockets and routine care.

Ready to upgrade your drivetrain with a chain built for real-world riding? The EK 420 H/Duty Chain 136L (20) brings rugged performance to your bike, helping you accelerate with confidence and ride longer between maintenance sessions.