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RK MOTORCYCLE CHAINS

PROFESSIONAL ROAD RACE

SPRINT RACING

PROFESSIONAL DRAG RACING

DRAG RACING

STRONGEST ON THE STREET

STRONG AND DURABLE

ENDURANCE STREET &
DUAL SPORT

AFFORDABLE PERFORMANCE

NARROW VINTAGE SPECIFIC

MONKEY & GROM 420 SEALED

MID CC STREET & DUAL SPORT

STREET & ADVENTURE

OFF-ROAD & ATV

OFF-ROAD & ENDURO

PROFESSIONAL SX/MX RACING

MINI RACING

MINI WEEKEND WARRIOR

HEAVY DUTY NON-SEALED

STANDARD NON-SEALED

RK CHAIN TOOL UCT2100(50)

RK Motorcycle Chains technical Specifications

RK Chain’s Five Seal-Ring Types

XW-RING
Triple barrier protection plus anti-debris protection. Two lubrication pools to protect against high speed abrasion. Ultimate durability.
Chain Series: ZXW, GXW, XRE, EXW
U-RING
Double barrier protection with enhanced long chain life similar to O-ring chains but with 65% less friction.
Chain Series: MRU, HRU
UW-RING
Triple barrier protection plus anti-debris protection. Over 30% longer chain life compared to U-ring sealed chains with 5% less friction.
Chain Series: UWR, MXU
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Chain Warning

RK MOTORCYCLE CHAINS
OFF-ROAD CHAIN PLATE INFORMATION

WornChain

Off-Road Plate Wear Info

Why do chains break?  There are many factors that can result in chain breakage. One type of breakage only seen in ATV and Off-Road applications is called “Plate Wear”. On a new chain, the plate should have a round shape very similar to the outline of a peanut. As the chain wears, the rounded tops and bottoms of the plate can wear flat. If this wear gets to a certain level, the chain will lose tensile strength. It is this loss of tensile strength that can cause the chain to break while the chain is under load.

It is most common for the inner side of the plate to wear out faster than the outer side of the plate; so when inspecting your chain, look over all parts of the chain to make sure that the inner side plate height is above 13.5mm in height for 520EXW, 520MAX-X and 520MAX-O. If the plate height is less than 13.5mm then the chain should be replaced immediately.

Plate Wear by RK Chain Model