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BikeMaster 525x120 BMXR O-Ring Chain - Green

Ideal OEM replacement offering 1.5 to 2x longer wear resistance than regular O-ring chains. Each refined component, designed with computer analysis, provides higher tensile strength. Specially controlled heat treatment means tougher material and more durability. Q4 seal ring and reinforced pin and roller provide superior wear resistance, higher impact resistance and endurance. Q4 seal ring offers less friction, which minimizes power loss, almost half that of standard O-ring chain.
  • Max engine size of 1,100cc street/900cc offroad
  • Includes rivet master link

The BikeMaster BMXR 525x120 O-Ring Chain, part number BKM197472, is an ideal OEM replacement for street and off-road motorcycles requiring dependable drivetrain performance. Designed to deliver approximately 1.5 to 2 times the wear resistance of a conventional O-ring chain, this green chain combines carefully engineered components with advanced manufacturing processes for improved service life and durability.


  • Construction: Refined components developed using computer analysis provide increased tensile strength and dependable performance under demanding riding conditions.

  • Heat Treatment: Specially controlled heat treatment produces tougher material for enhanced durability and resistance to wear.

  • Q4 Seal Ring: Low-friction sealing helps reduce power loss while protecting internal lubricant and chain components from contamination.

  • Reinforced Components: Reinforced pins and rollers improve wear resistance, impact resistance, and overall chain endurance.

  • Application Range: Suitable for engines up to 1,100cc for street motorcycles or 900cc for off-road motorcycles.

  • Installation: Includes a rivet-style master link for secure chain assembly.


The Q4 seal ring is engineered to reduce friction, helping minimize drivetrain power loss compared with standard O-ring chain designs. Reinforced pins and rollers support consistent operation through acceleration, shifting, and exposure to demanding riding conditions, making this BikeMaster chain a practical choice for replacement or performance-focused maintenance.
The BikeMaster BKM197472 chain is built for riders seeking a durable, high-strength replacement with improved wear resistance over standard O-ring construction. Verify chain size, link count, motorcycle application, and master-link compatibility before installation. Proper alignment, lubrication, and adjustment are recommended to help achieve optimal chain performance and service life.

Features:

  • Wear Resistance: Delivers approximately 1.5 to 2 times the wear resistance of a regular O-ring chain.
  • High Tensile Strength: Computer-analyzed components provide reliable strength for demanding motorcycle applications.
  • Durable Construction: Controlled heat treatment creates tougher material for improved longevity.
  • Q4 Seal Ring: Reduces friction and helps minimize drivetrain power loss.
  • Reinforced Pins and Rollers: Improve wear resistance, impact resistance, and endurance.
  • Engine Compatibility: Rated for engines up to 1,100cc on street motorcycles or 900cc off-road.
  • Included Hardware: Comes with a rivet master link.
  • Color: Green.