RK EXCEL GB520SO-130 520SO Gold O-Ring Drive Chain, 130 Links

RK’s traditional round O-ring chain is a convenient blend of performance and affordability. SO’s O-ring is constructed from Nitrite Butadiene to seal in lubrication and deliver smooth power with minimal seal ring drag or loss of horsepower. 520SO chains are suitable for low to mid-range CC motorcycles that came from the factory with sealed chains. 520SO can be used for both on street and off-road up to 400ccs. 520SO is available only in natural finish.

The RK EXCEL GB520SO-130 520SO Drive Chain is a dependable sealed chain for low- to mid-range displacement motorcycles, ATVs, and off-road applications. Featuring a gold finish and traditional round O-ring construction, this 130-link chain helps retain factory-applied lubrication while reducing contamination, friction, and seal drag. It is designed for vehicles originally equipped with a sealed 520-size chain and supports applications up to 400cc.

The RK EXCEL 520SO uses durable nitrile butadiene O-rings to protect the internal lubrication and promote smooth, consistent power transfer. With a tensile strength of 6,900 pounds and a maximum rating of 60 horsepower, the GB520SO-130 is suitable for both street and off-road use when matched to the motorcycle or ATV manufacturer’s fitment requirements. The chain is supplied with a clip-style master link for installation.

Feature: Gold finish for a distinctive appearance and corrosion-resistant surface protection.
Feature: 520SO model for low- to mid-range motorcycles, ATVs, and off-road vehicles.
Feature: Nitrile butadiene O-rings help seal in lubrication and reduce wear.
Feature: Rated for applications up to 400cc on street and off-road vehicles.
Feature: Supports up to 60 horsepower with 6,900 pounds of tensile strength.
Feature: Includes a clip-type master link.
Feature: Manufacturer part number: GB520SO-130.
Feature: Vendor part number: GB520SO-130.

Verify chain size, link count, and sealed-chain requirements against the vehicle manufacturer’s specifications before installation. Proper alignment, lubrication, and adjustment are essential for reliable service life and safe operation.

Features:

• Gold finish
• 520SO O-ring chain model
• 6,900-pound tensile strength
• Maximum rating of 400cc for street and off-road applications
• Maximum horsepower rating of 60 HP
• Nitrile butadiene O-rings retain lubrication and reduce seal drag
• 130-link chain configuration
• Clip-type master link included
• Brand: RK EXCEL
• Manufacturer part number: GB520SO-130
• Vendor part number: GB520SO-130