RK Racing Chain 520-SO-98 Steel 98 Link O-Ring Chain - Durable Drive

In this review of the RK Racing Chain 520-SO-98, the bottom line is simple: this is a dependable, heavy-duty O-ring motorcycle chain for riders of bikes up to 400cc who want long wear life and stable power transfer. The reviewer found the chain's construction - heat treated hi-carbon alloy steel, seamless rollers and shouldered bushings - gives a tangible sense of durability, while the Nitrile Butadiene O-rings retain lubrication and avoid noticeable power loss. Installation and the supplied clip master link received mixed feedback from owners, but overall the chain stands out for longevity and value.

Key Features

• Hi-carbon alloy steel construction: Heat treated components and seamless rollers provide strength and resistance to stretching for longer service life.
• Shouldered bushings: Precision bushings reduce lateral wear and keep the chain tracking smoothly under load.
• Nitrile Butadiene O-rings: Advanced O-ring seals lock in lubrication to reduce friction and maintain smooth power delivery with minimal drag.
• High tensile rating: A tensile strength of 7700 lbs/ft gives confidence for street and off-road use on machines up to 400cc.
• Practical sizing: At 98 links, 19.9 mm pin length and 15.875 mm pitch center, it suits a wide range of 520 applications with predictable installation needs.
• Value and weight: At about 4.08 lbs per 100 links, the chain balances durability and manageable weight for routine service.

Who It's For

This chain is aimed at street and off-road riders with motorcycles up to 400cc who prioritize durability and consistent lubrication retention. It is a solid choice for commuters, weekend sport riders and light off-road enthusiasts who want a robust O-ring chain without premium pricing.

Riders of larger displacement bikes, those who prefer X-ring chemistry specifically, or people who demand a clipless master link from the factory may want to consider alternatives. Also, if effortless installation is a top priority, note that some users reported mixed experiences with fit and the supplied master link.

Pros & Cons

Pros

• High tensile construction and heat treated steel deliver strong resistance to stretch and long wear life.
• Nitrile Butadiene O-rings hold lubrication effectively, producing smooth, efficient power transfer.
• Good overall value: customers report quality and durability consistent with the price point.

Cons

• Fit and ease of installation have mixed feedback, and the clip master link may not please every installer.

Specifications

Our Verdict

The RK Racing Chain 520-SO-98 is a durable, well-sealed O-ring chain that offers strong tensile ratings and reliable lubrication retention, making it a smart buy for riders of sub-400cc motorcycles who value longevity and steady power delivery. It represents solid value, though installers should be aware of occasional fit or master link preferences among users.

Frequently Asked Questions

Is this chain suitable for off-road use?
Yes, the 520-SO-98 is rated for off-road use up to 400 cc and its O-ring seals help retain lubrication under varied conditions.

What type of master link is included?
The chain ships with a clip type master link; some users find this fine while others prefer a different style for easier installation.

How long can I expect it to last?
With proper maintenance the chain's construction and nitrile O-rings deliver a strong wear life index and good long-term durability.