Update- 520MXU
PRO GuIDe
RK ZXW premium high-performance chain
RK ' s ZXW series is used both for racing and general street use. The racing technology used is said to provide " the ultimate in high performance drive chain," says Daisuke Takogoshi, RK ' s Sales Manager for Europe. Developed from RJK ' s experience in MotoGP, WorldSBK, and FIM Endurance World Championship( EWC) racing, the ZXW has " proven its superiority by winning many races of in category. " An exceptionally high-performance endurance race chain needs several features to come together, work together and make for a chain that is greater than the sum of its parts," says Daisuke. These features include Low Friction – the chain must not reduce power output from the engine; High Tensile Strength – the chain must be able to withstand the extreme loads of race engines; Consistency – the chain must perform consistently and reliably for the entire race duration; Fuel Efficiency – the chain must not decrease the engine ' s fuel efficiency. " All these features are in perfect balance in the construction of the ZXW series chains. They are ideal for high-speed, high-horsepower performance applications, large displacement and extended swingarm machines. " The advanced technologies we incorporate into every ZXW chain includes XW-Ring seals that
provide three contact lips and two lubrication pools to protect against dirt and debris, high-speed abrasion, heat buildup and the loss of lubricant under extreme conditions. " That ' s a fancy way of saying XW-Ring seals make your chain last longer. Available in 520, 525 and 530 pitch( 42.0kn, 46.4kN and 49.8kN tensile strengths), riders can choose from either Natural, Gold, Black Scale, Red, Blue, Green, Orange, or Yellow finishes. " When RK develops a chain with a combined heritage of both drag racing and extreme endurance racing, riders can rest assured that they ' re getting the best of both racing worlds."
RK JAPAN Tokyo, JAPAN www. rk-europe. com
Update- 520MXU
In the last edition of IDN we reported on RK ' s 520MXU Pro off-road chain and this month we can reported that the RK Chain supported team Husqvarna Factory Racing and their rider Billy Bolt has been crowned 2025 FIM SuperEnduro World Champions. Equipped with RK Pro-off-road 520MXU chain in gold, Billy won the SuperEnduro World championship title for the fifth consecutive season- using the 520MXU each year. The RK Pro-offroad 520MXU is a widely adopted ' chain of choice ' for FIM SuperEnduro participating riders such as Jonny Walker from Triumph Racing Enduro Team, Alfredo Gomez from AG Bata Racing Team, and Eddie Karlsson from Stark Varg Racing.
www. idnmag. com INTERNATIONAL DEALER NEWS- MAY / JUNE 2025 37