D.I.D. M520X118RB 520 Standard Non-Sealed Motorcycle Chain 118 Links

The D.I.D. 520D Standard Chain is a non-sealed roller drive chain designed for reliable power transmission on motorcycles up to 250cc. This 118-link chain features traditional roller construction without O-rings or X-rings, making it an economical choice for street and off-road applications where frequent maintenance is part of the routine.

Key Specifications:

• Chain Size: 520 pitch with 118 links
• Tensile Strength: 6,700 lbs for dependable power transfer
• Maximum Engine Size: 250cc
• Pin Length: 0.689 inches
• Pin Diameter: 0.2 inches
• Inner Plate Thickness: 2mm
• Outer Plate Thickness: 2mm
• Weight: 3.68 lbs (calculated from 3.12 lbs per 100 links)
• Chain Life Index: 100 (industry standard baseline)

As a non-sealed chain, this model requires regular lubrication and maintenance but offers the advantage of lower initial cost and lighter weight compared to sealed chains. The RB suffix indicates this chain comes with a rivet-type connecting link for secure installation. Ideal for riders who prefer traditional chain maintenance or operate in conditions where sealed chains offer limited advantage.