There are many chain manufacturers in the motorcycle industry but most
(including some Japanese manufacturers) only offer a single type of
sealing ring, using a "one type fits all approach" which is used on all
their drive chains.
This can be inefficient depending on the intended use. .
Different types of seals for different applications maximises efficiency
and performance
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RK currently has FIVE types of sealed-ring chains. Each has its own
features and benefits.
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O ring and RX Rings came first. Each a great product in their own
right and broadly similar to the competition's current offerings.
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After several years of development, RK added the XW range of sealed
chains to radically improve chain life and performance.
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As racing expanded into several different genres, RK also added the
ultra thin U-Ring and UW-Ring sealed chains.
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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.
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Do not compromise: Maximise the motorcycle's performance by fitting RK
chain. Mark Marquez does and he does pretty well...
EXW is specifically designed for ATV/Off-Road vehicles and is the best
high-speed, extreme heat, off-road performance chain available. EXW
chains feature XW-Ring seals to better survive the abrasive conditions
that exist in hostile off-road conditions.
