The RK 520 MXU is a lightweight sealed-ring racing chain engineered for consistent power delivery and extended service life. Designed for high-performance motorcycles, this 114-link chain is ideal for racing applications using engines from 125cc to 500cc. Its sealed UW-ring construction helps retain lubrication and provides improved protection against contaminants compared with conventional non-sealed racing chains.
Manufactured by RK, the 520 MXU combines low weight with substantial tensile strength for demanding race environments. The chain weighs approximately 3 pounds per 100 links, helping reduce drivetrain mass while maintaining the durability required for repeated acceleration, shifting, and high-load operation. The 114-link configuration is suitable for applications requiring this specific chain length and should be confirmed against the motorcycle manufacturer’s fitment requirements before installation.
Each RK GB520MXU-114 chain includes a clip-style connecting link for installation. Proper fitment may require adjustment for sprocket combination, swingarm position, and final chain length. Always verify the motorcycle model, chain size, link count, and manufacturer specifications before use. This RK sealed racing chain is supplied under manufacturer part number GB520MXU-114 and vendor part number GB520MXU-114.
Features:
- Size: 520 chain size with 114 links
- Model: 520 MXU sealed racing UW-ring chain
- Brand: RK
- Manufacturer: RK
- Manufacturer Part Number: GB520MXU-114
- Vendor Part Number: GB520MXU-114
- Application: Racing motorcycles with engine sizes from 125cc to 500cc
- Construction: Lightweight sealed UW-ring design for consistent power delivery and extended chain life
- Weight: Approximately 3 pounds per 100 links
- Connecting Link: Clip-style connecting link included
- Fitment: Verify chain size, link count, sprocket configuration, and motorcycle manufacturer specifications before installation