The EK 630MS-140C is a high-strength, non-sealed chain designed for drag racing applications. As one of the most popular 630 drag racing chains in the U.S. market, it delivers a strong balance of durability and low drag for race-focused drivetrains. The 140-link configuration provides flexibility for custom applications and final-drive setups requiring a longer chain length.
Manufactured by EK and supplied under vendor part number 69-5540C, this chrome-finish chain is recommended for applications producing up to 500 horsepower. Its non-sealed construction is intended to reduce drivetrain resistance, making it well suited to competition motorcycles and other performance vehicles where efficient power transfer is a priority.
Use the EK 630MS-140C for compatible 630-size drag racing applications. Confirm sprocket compatibility, chain length, and final-drive requirements before installation. Proper alignment, riveting, lubrication, and tension adjustment are essential for safe operation and long service life. The chain is supplied in a 140-link length and can be fitted or adjusted by a qualified technician as required.
Features:
- Application: Designed for drag racing applications
- Chain Size: 630 non-sealed chain
- Link Count: 140 links
- Performance: High strength with low drag
- Power Rating: Recommended for applications up to 500 horsepower
- Finish: Chrome
- Brand: EK
- Manufacturer Part Number: 630MS-140C
- Vendor Part Number: 69-5540C