EK 520 RR/SM SX-Ring Narrow Race Chain 120L - Chrome (10)

Engineered for track days, street agility, and off‑road grit, the EK 520 RR/SM SX-Ring Narrow Race Chain 120L Chrome is a purpose‑built drivetrain upgrade designed to elevate performance for demanding riders. With a 520 pitch and 120 links, this chain is ready to pair with a wide range of sportbikes, adventure bikes, and motocross machines that demand a high‑efficiency transfer of power under pressure.

What makes the SX-Ring design different

• SX‑Ring sealing: the X‑shaped seals trap lubrication and repel dirt, delivering smoother rotation and reduced wear compared to standard chains, so you get more consistent performance over time.
• Narrow race profile: a leaner construction minimizes weight and inertia, contributing to quicker throttle response and crisper gear changes.
• Chrome finish: corrosion resistance that stands up to wet roads, dusty trails, and salty environments, keeping your drivetrain looking sharp and performing reliably.
• 120L length: a versatile length that fits most 520 setups while maintaining optimal tension and durability for high‑torque applications.
• Racing/SM versatility: specifically optimized for road racing, Supermoto, and performance street riding where consistent power delivery matters.

Who benefits most

• Track enthusiasts who demand precise power transfer, responsive acceleration, and dependable chain life under high RPM and aggressive riding styles.
• Supermoto riders who push steering precision and throttle control through tight corners and hard braking zones.
• Sportbike and adventure riders seeking a durable, lightweight chain that holds up in challenging environments without sacrificing performance.
• Riders upgrading from a lower‑tier chain who want a noticeable improvement in shift feel, cadence stability, and long‑term reliability.

Installation and maintenance at a glance

• Compatible with standard 520 sprockets and drive systems—verify you have the proper rivet tool and master link for your bike’s setup.
• Keep tension correct and avoid cross‑chaining to maximize wear life and smooth operation.
• After cleaning, apply a quality chain lubricant designed for sealed chains to extend life and maintain a quiet ride.

Specifications at a glance

• Pitch: 520
• Links: 120
• Ring type: SX‑Ring (X‑ring seals)
• Finish: Chrome plated for enhanced corrosion resistance
• Intended use: Narrow race chain optimized for racing, Supermoto, and high‑performance riding

For riders who demand a drivetrain upgrade that translates to tangible on‑bike improvements, the EK 520 RR/SM SX‑Ring Narrow Race Chain 120L Chrome delivers tighter seals, lighter footprint, and durable performance under pressure. If you’re upgrading your bike’s chain for track days, aggressive street rides, or Supermoto sessions, this chain provides the precision, resilience, and long‑term reliability you’re seeking.