RK HRU 415 x 136 U Ring Sprint Racing Motorcycle Drive Chain Gold and Black

Different types of seals for different applications maximises efficiency and performance

O ring and RX Rings came first. Each a great product in their own right and broadly similar to the competition's current offerings

After several years of development, RK added the XW range of sealed chains to radically improve chain life and performance

Each seal type is specifically designed for a particular use to provide the ultimate in rotating efficiency with minimum friction, while providing a longer chain life

The RK racing chain series use RKs unique technology using an ultra thin seal where the thickness of seal is less than 50% of the common seal

This makes it possible to design a sealed chain with the weight of a non-sealed chain

The use of sealed chain in racing can minimize the elongation of the chain which maintains the meshing precision between chain and sprocket, keeping high transmission efficiency throughout the race

RK Racing Chain Series are designed strictly for Racing ONLY