428KRO, 520KRO, 525KRO, 530KRO
General Street Use
O-Ring ChainClassic Sealed Chain
RK offers the best O-Ring chains in the industry.
All RK O-Ring chains are manufactured with hi-carbon alloy steel for strength and durability.
Applying Nitrite Butadiene O-Rings to seal in lubrication and deliver smooth power with minimal ring drag or loss of horsepower.
