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Renthal R3-3 SRS 520 O-Ring Chain

Item # 308-13039

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Product Details

Renthal R3-3 SRS 520 O-Ring Chain

The R3-3 chain replaces the R3-2 O-ring seals and now incorporates Renthal’s SRSTM (self-regulating seals) system which greatly increases chain life. The SRSTM upgrade brings with it a 40% increase in chain life at no additional cost, thanks to the improved sealing properties around each pin.

The special SRSTM system is pre-loaded during assembly, creating a spring effect. As a chain wears, conventional O-rings and X-rings become loose over time allowing the seal to fail, whereas the SRSTM has the inherent ability to regulate a constant sealing pressure against the side plates throughout the life of the chain.

Additionally the Renthal R3-3 chain has been upgraded with Renthal’s R4 Chain proven quad riveting manufacturing process. The rivet link has also been changed to a hollow end to facilitate easier installation. Each R3-3 chain is supplied with a split link for easy track-side fitment and a rivet link for maximum tensile strength.


  • Incorporates SRS ring system (self-regulating seals) increasing chain longevity
  • Quad riveting manufacturing process
  • Rivet link features a hollow end to facilitate easier installation
  • Like the R3.2, a split link is still included in the box for easy track side fitment
  • Offered in 520 pitch only

Note: Make sure to check your owner's manual for the proper application, especially if you are installing a O-ring chain on a bike that came from the factory with a non O-ring chain.


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Item doesn't fit or you aren't happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. Once item is received we will issue a refund to your original payment method.

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