The EK 630MS-120C is a high-strength, non-sealed motorcycle chain designed for drag racing applications. With a 630 chain size and 120-link configuration, this EK chain provides a practical combination of strength, durability, and reduced drag for performance-focused builds. Its chrome finish adds corrosion resistance and a clean appearance while supporting reliable service in demanding racing environments.
Manufacturer part number: 630MS-120C. Vendor part number: 69-5520C. The EK 630MS-120C is recommended for applications producing up to 500 horsepower and is intended for use where low friction and dependable power transfer are priorities. As a non-sealed chain, it is best suited to properly maintained racing applications where frequent inspection, lubrication, and adjustment are part of regular service.
Fitment includes the 1979 Honda CB750L, 1980 Kawasaki KZ750H Ltd with four-cylinder engine, and 1983 Suzuki GS1100S Katana. Verify sprocket compatibility, chain length, and the motorcycle's specific drivetrain requirements before installation. Professional installation is recommended to ensure correct alignment, tension, and rivet or master-link engagement. The EK brand is recognized for motorcycle chain solutions, and the 630MS-120C delivers a purpose-built option for drag racing and other high-performance applications requiring a 630-size chain.
Features:
- Application: Designed for drag racing applications
- Chain Size: 630
- Configuration: Non-sealed chain with 120 links
- Performance: High strength with low drag for efficient power transfer
- Power Recommendation: Suitable for applications up to 500 horsepower
- Finish: Chrome finish for added corrosion resistance and a clean appearance
- Fitment: Fits 1979 Honda CB750L, 1980 Kawasaki KZ750H Ltd with four-cylinder engine, and 1983 Suzuki GS1100S Katana
- Manufacturer Part Number: EK 630MS-120C
- Vendor Part Number: 69-5520C
Fitment:
1979 Honda CB750L
1980 Kawasaki KZ750H Ltd [4Cyl]
1983 Suzuki GS1100S Katana