Since the RK Takasago Company first began production of motorcycle chains as far back as 1953 the name RK has been synonymous with quality. RK Takasago chain has also been researching and developing high-performance sealed-ring chains for use on modern motorcycles for over thirty years.

RK is the trusted supplier for OEM manufacturers such as Honda, Yamaha, Suzuki & Kawasaki. RK chains are used by professional race teams around the world including MotoGP Repsol Honda, WSBK Kawasaki Racing Team, AMA SX/MX Monster Energy Pro Circuit Kawasaki, FMF KTM Factory Racing Teams, Rockstar Energy Husqvarna Factory Racing Teams & many more.

All RK Sealed chains feature heat treated hi-carbon alloy steel components, giving unrivalled wear life. Seamless rollers that allow the chain to run freely between the teeth of the sprocket and reduce chain vibration. All RK seals are made from an advanced Nitrile Butadiene composite for maximum performance and wear life.

MXU is the lightest sealed-ring motocross chain available on the market today. Made for the professional motocross racer, 520MXU is the next generation of motocross racing chains featuring RK's new UW-sealing rings. MXU chains are designed to provide the most consistent power delivery and increased chain life. All components are heat-treated using Rk's exclusive HIT (Heat Induction Transfer) process. MXU has a maximum tensile strength rated at 10,800 Nm, weighs a mere 1.38 kg per 100 links and can handle any MX race application from 125 to 500ccs.

• Tensile Strength: 10800 Nm
• Weight: 1.38 KG
• Max CC Rating: 500cc Dirt
• Master Link Type: CLIP
• Chain Length: 114