RK Chain Chains

RK Chain: Race-Proven Drive Chains for Every Rider

When it comes to motorcycle and ATV drive chains, few names carry as much weight as RK Chain. Chains are the single most critical link — literally — between your engine's power and the rear wheel, and RK has spent decades engineering products that handle that responsibility with precision. With roots stretching back to 1953, when the Japan-based company began producing chains for motorcycles, RK has grown into one of the most respected chain manufacturers in the powersports world.

What separates RK from the pack is a relentless focus on seal and lubrication technology. Their lineup is organized around distinct seal systems — O-Ring, U-Ring, and the flagship XW-Ring — each engineered to meet specific performance demands. At the top of the hierarchy sits the ZXW Series, developed to meet the specifications of extreme superbikes displacing 1,000cc and above. The ZXW's XW-Ring seals feature three contact lips and two lubrication pools to protect against high-speed abrasion, heat buildup, and lubricant loss under the most demanding conditions. The ZXW's racing credentials are exceptional: it features MotoGP and FIM Suzuka 8 Hour Endurance technology, with a documented record of winning 35 first-place finishes out of 39 races at the FIM Suzuka 8 Hour Endurance Race.

Riders who need capable street and trail performance without stepping up to the full ZXW spec have plenty of options. The XRE Series uses XW-Ring seals that provide two lubrication pools for protection against high-speed abrasion and debris intrusion, while offering a 20% longer wear life compared to its predecessor. The MAX-X Series uses sealed RX-Rings with four-point riveting for exceptional strength across a wide range of displacement classes. For O-Ring enthusiasts, the MAX-O Series features O-rings that fill the space between the chain and link plates, blocking dirt and debris while maintaining consistent internal lubrication.

Off-road and motocross riders are equally well served. The EXW Series is purpose-built for ATV and off-road vehicles, with XW-Ring seals engineered to survive the abrasive, high-heat, debris-filled conditions of trail and race environments. For motocross racers, the MXZ Series — including the MXZ5 for professional supercross and motocross — features chromoly steel construction with seamless rollers and bushings for a lightweight, high-strength competition chain. At the extreme end of the spectrum, RK's 530PRODR Drag Racing Chain is a dedicated non-sealed chain born on the drag strip, rated to handle the explosive loads of full-competition drag bikes.

Beyond raw technology, all RK chains are pre-stressed and pre-stretched at the factory, meaning less break-in time and minimal adjustment right out of the box. RK's reputation for quality has also led to OEM partnerships with Yamaha, Kawasaki, Suzuki, and other major manufacturers — their chains ship as factory-original equipment on many dirt bike and sport bike models, making them a reliable direct replacement as well as an upgrade path.

Whether you ride a small-displacement commuter, a fire-breathing superbike, or a competition motocross machine, browse the full selection of motorcycle and ATV chains or explore everything RK Chain has to offer across their complete product range.