ONROAD CHAINS

XRU Developed in collaboration with the best MotoGP and Superbike teams Ideal choice for modern Superbikes RK's exclusive Ultra Thin Seal technology, UW-Ring, reduces friction and power losses to a minimum improved efficiency and power transmission from the engine to the wheel throughout the life of the chain

RUWR Developed in collaboration with the best Moto2 and Supersport teams Ideal choice for Moto2 and Supersport RK's exclusive Ultra Thin Seal technology, UW-Ring, minimizes friction and power losses The application of sealing rings ensures better efficiency and power transmission from the engine to the wheel for the entire life of the chain

HRU Developed with the collaboration of the best Moto3 teams Ideal choice for Moto3, pre-Moto3 and all 415 wheelbase racing bikes Exclusive RK U-Ring technology, allows you to create a sealed chain with the same weight as a non-sealed chain application of the sealing rings guarantees better efficiency and power transmission from the engine to the wheel for the entire life of the chain

ZXW Developed to meet the technical specifications of modern Supersports Exclusive RK XW-Ring technology, with two lubrication zones and three contact lips create a triple barrier to further seal the chain and prevent debris from entering the chain Reduced contact surface of the rings and increased lubrication led to improved durability without loss of power

XSO Designed for street, naked, enduro, tourer, cruiser bikes Equipped with RX-Rings, with an “X” shape, which provide a double barrier to seal lubrication, providing double the lifespan of traditional O-Rings

MRU Designed for small-displacement road motorcycles Suitable for small-displacement motorcycles Exclusive RK U-Ring technology, allows the creation of a sealed chain with the same weight as a non-sealed chain The application of sealing rings guarantees better efficiency and transmission of power from the engine to the rear wheel for the life of the chain

SO Designed for road bikes, naked bikes and medium power cruisers. Equipped with O-Rings, the chain represents a perfect combination of performance and convenience while maintaining high quality standards

KRO Designed for medium power road motorcycles Equipped with O-Ring, it is the RK proposal for those looking for a quality product at an economical price

STANDARD Chain without sealing rings Suitable for small displacement motorcycles

OFF-ROAD CHAINS

MXU This Enduro/Motocross chain is the lightest chain available on the market today. RK's exclusive Ultra Thin Seal technology, UW-Ring, minimizes friction and power losses. The application of sealing rings guarantees improved efficiency and power transmission from the engine to the wheel throughout the life of the chain

EXW Designed for extreme rally races such as the Dakar Exclusive RK XW-Ring technology, with two lubrication zones and three contact lips create a triple barrier to further seal the chain and prevent debris from entering the chain Reduced contact surface of Rings and greater lubrication lead to improved durability without power losses Heat treated plates for better resistance to mechanical fatigue

KXZ Reinforced to withstand heavy Motocross use RK HCR (High Tech Chromium Carbide Layered Pins) Special alloy pins for greater resistance to pin wear, absorbing extreme shock loads during landings Plates manufactured from special steel, seamless rollers and bushings Use: amateur

MXZ Dedicated to modern Minicross motorbikes Plates produced with special steel, rollers and bushings without welding Oversized pins in special alloy for greater resistance and durability Use: Amateur

MXZ1 Dedicated to modern Minicross motorbikes with 428 wheelbase Plates produced with special steel, rollers and bushings without welding Oversized pins in special alloy for greater resistance and durability Use: Amateur

MXZ4 Dedicated to modern Minicross bikes RK HCR (High Tech Chromium Carbide Layered Pins) Special alloy pins for greater resistance to pin wear, absorbing extreme shock loads during landings Plates produced with special steel, rollers and bushings without welding Better durability and greater breaking load Use: Professional

MXZ5 Reinforced to withstand heavy Motocross use RK HCR (High Tech Chromium Carbide Layered Pins) Special alloy pins for greater resistance to pin wear, absorbing extreme shock loads during landings Plates manufactured from special steel, seamless rollers and bushings Use: Professional