Advanced RK XW-ring offers three lubrication barriers to reduce friction and heat to offer longer wear resistance.

Anti-stretch chromium pin treatment 10% higher tensile strength

Heavy duty MXZ Mini Racing chains made for mini MX and SX racing. MXZ chains feature Chromoly steel construction with seamless rollers and bushings, and oversized special alloy pins for added strength.

Maximum tensile strength of 5,800 lbs

Used by professional SX and MX race teams the MXZ chain features high-quality pins, bushings and rollers for maximum durability. Narrow, lightweight chain with 4-point riveted pins. Longer wear life than RK Standard Chain.

415 Sprint Racing Chain Series Features RK's proprietary Ultra Thin U Seal Rings. U-Rings have a seal thickness less than 50% of the common O-ring seal, making it possible to design a Sealed Chain with the weight of a Non-Sealed Chain.

Hyper-performance chain-RK's latest technology. Specifically designed for today's heavy, high horsepower bikes and extended swingarms. Reinforced components made of the finest materials and RK's original XW-Ring for maximum strength and wear-life.

Rivet-type connecting link for 520ZXW chains.

Features XW type seals, which provide better internal lubrication sealing for extended chain life.

RK's XRE series chains are the successor to XSO chains. Compared to XSO, XRE series chains feature a 20% longer wearlife. XRE chains include XW-sealing rings which provide two lubrication pools which help protect against high speed abrasion and prevent...

Connecting Link for 530 KS - Ring Chain.

RK non-sealed chains perfect for low displacement motorcycles that did not come from the factory with sealed chains. If the motorcycle came from the factory with a sealed chain, then RK recommends always replacing it with a sealed chain.