The RK Excel 520SO-100 is a 520 series round O-ring drive chain designed for low- to mid-range displacement motorcycles, ATVs, and off-road applications. Built for vehicles originally equipped with a sealed chain, this steel chain combines dependable performance with practical value for both street and trail use. The 100-link configuration supports a wide range of motorcycle applications and can be adjusted as needed for proper fitment.
RK Excel uses a nitrile butadiene rubber O-ring construction to help retain factory-applied lubrication inside the chain pins and bushings while limiting contamination from dirt and moisture. This design promotes smooth power transfer and helps reduce seal drag and lubrication loss during operation. The chain is supplied in a natural steel finish and includes a clip-style master link for installation and service.
Rated for motorcycles and ATVs up to 400cc, the RK Excel 520SO-100 supports applications producing up to 60 horsepower. Verify the original equipment chain size, required link count, clearance, and manufacturer fitment specifications before installation. This chain is intended for use with compatible 520 sprockets and is suitable for on-road and off-road vehicles within its stated capacity. Manufacturer part number 520SO-100 and vendor part number 520SO-100 identify this RK Excel replacement chain.
Features:
- Size: 520 series, 100 links
- Model: 520SO
- Brand: RK Excel
- Manufacturer Part Number: 520SO-100
- Vendor Part Number: 520SO-100
- Construction: Steel drive chain with round nitrile butadiene O-rings
- Application: Low- to mid-range displacement motorcycles, ATVs, and off-road vehicles
- Fitment: Suitable for compatible 520 sprocket systems and vehicles originally equipped with sealed chains
- Capacity: Rated for motorcycles and ATVs up to 400cc
- Power Rating: Supports applications up to 60 horsepower
- Master Link: Clip-style master link included
- Finish: Natural steel finish