RK MRU Series - premium replacements for non-sealed chains
The Japanese-made RK 420MRU and 428MRU2 chains are designed to be the premium replacement for OE non-sealed chains, featuring RK's unique ultra-thin seal, U ring technology.
This technology makes it possible to design a sealed chain with the width of a non-sealed chain and converting non-sealed to a sealed chain - "resulting in at least four times chain life and minimum chain adjustment after initial stretch while ensuring highly efficient horsepower transmission throughout the chain life," says Daisuke Takagoshi, RK's Export Sales Manager. "RK 420MRU and 428MRU2 are long-lasting solutions for motorcycles for daily corporate use and commuting.
“These lightweight, low friction, sealed U-Ring chains are perfect for current popular small engine size motorcycles such as Honda Monkey, MSX125 GROM, Kawasaki Z125 for 420MRU, and Honda CBR125R and Yamaha YZF-R125 for 428MRU2."
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| Photo: Yoshimura |
Daisuke says that "the RK 520MRU is the lightest multipurpose sealed chain specially designed for engine size up to 450 cc, applicable to both street and track use. On the road it delivers 15,000 km of chain life, and on the track it is a high-performance chain delivering excellent lap times."
Additionally, the unique ultra-thin seal, UW-rings technology incorporated into the RK 520MRU minimizes the chain weight and friction loss. By narrowing the application from 125 cc to 450 cc, each chain component is shaped up to its limit, making RK 520MRU as light as 13.8 g link, 10% lighter compared to street bike chains.
"The 520MRU is the perfect match with small engine size motorcycles such as the Yamaha MT-03, Kawasaki Ninja 400, KTM 390 Duke, and is a suitable chain for Supermoto models." RK MRU series chains are in gold as standard, with a Black Scales colour available for the 420MRU.
RK JAPAN
