The EK 520-90 Sport Non-Sealed Chain is designed for lower-horsepower dirt bike, ATV, and street applications. This 520-size, 90-link chain provides a dependable replacement option for compatible original equipment chains, combining practical performance with economical operation. Its non-sealed construction is well suited to applications where a lightweight, straightforward chain design is preferred.
Pre-stretched construction helps reduce initial adjustment requirements, while shot-peened components improve durability under normal riding conditions. Solid rollers and heat-treated steel provide a useful step up from many basic OEM replacement chains, offering reliable power transfer and long-lasting service when properly installed, lubricated, and maintained. The chain is supplied in the EK Sport series and is identified by manufacturer part number 520-90 and vendor part number 69-3790.
Fitment includes select Honda models such as the 1984 Honda ATC250R; 1985 and 1986 Honda ATC350X; 1984 Honda ATC200ES; 1981, 1982, and 1983 Honda ATC200; 1982 and 1983 Honda ATC200E; and the 1980 Honda ATC185. Confirm the required chain size, link count, sprocket compatibility, and model-year application before installation. As a non-sealed chain, regular cleaning, lubrication, and tension inspection are recommended to help maximize service life.
Features:
- Application: Designed for lower-horsepower dirt bike, ATV, and street applications
- Chain Size: 520 chain with 90 links
- Construction: Pre-stretched and shot-peened for dependable service
- Durability: Solid rollers and heat-treated steel support long-lasting performance
- Replacement Use: Economical step-up option for compatible OEM replacement chains
- Brand: EK
- Manufacturer Part Number: 520-90
- Vendor Part Number: 69-3790
- Fitment: Select Honda ATC250R, ATC350X, ATC200ES, ATC200, ATC200E, and ATC185 models
Fitment:
1976 Yamaha YZ100
1977 Yamaha YZ100
1980 Honda ATC185
1981 Honda ATC200
1982 Honda ATC200
1982 Honda ATC200E
1983 Honda ATC200
1983 Honda ATC200E
1984 Honda ATC200ES
1984 Honda ATC250R
1984 Kawasaki KL600
1984 Kawasaki KXT 250 Tecate
1985 Honda ATC350X
1985 Kawasaki KXT 250 Tecate
1986 Honda ATC350X
1987 Kawasaki KSF250 Mojave
1988 Kawasaki KSF250 Mojave
1989 Kawasaki KSF250 Mojave
1990 Kawasaki KSF250 Mojave
1991 Kawasaki KSF250 Mojave
1992 Kawasaki KSF250 Mojave
1993 Kawasaki KSF250 Mojave
1994 Kawasaki KSF250 Mojave
1995 Kawasaki KSF250 Mojave
1996 Kawasaki KSF250 Mojave
1997 Kawasaki KSF250 Mojave
1998 Kawasaki KSF250 Mojave
1999 Kawasaki KSF250 Mojave
2000 Kawasaki KSF250 Mojave
2001 Kawasaki KSF250 Mojave
2002 Kawasaki KSF250 Mojave
2003 Kawasaki KSF250 Mojave