EK Chain 520SRO6104 520 x 104 Link SRO6 O-Ring Motorcycle Chain

The EK Chain 520SRO6104 is a 520-pitch O-ring drive chain featuring 104 links, designed for high-performance street and sport motorcycle applications. EK Chain is one of the most respected names in motorcycle drivetrain components, and the SRO6 series represents a reliable, durable O-ring chain built to handle the demands of everyday riding and performance use.

The 520 pitch designation makes this chain a popular choice for mid-displacement sport bikes and naked bikes, offering an excellent balance between strength and reduced rotational mass compared to heavier 525 or 530 pitch chains.

Key Features:

• 520 Pitch — Standard 520-series chain (5/8" pitch) for broad motorcycle compatibility
• 104 Links — Pre-cut length suitable for a wide range of motorcycles and custom applications
• SRO6 O-Ring Construction — Rubber O-rings seal grease between the inner and outer plates, extending service life and reducing maintenance intervals
• High-Strength Plates — Precision-manufactured side plates and rollers for consistent power transfer
• EK Quality Manufacturing — Produced by Enuma Chain, a Japanese manufacturer with decades of OEM and aftermarket chain expertise

The EK 520 SRO6 O-ring chain is an ideal replacement or upgrade chain for riders seeking proven durability and low-maintenance performance. Compatible with standard 520-series front and rear sprockets.