UWR is specific for vintage motorcycles requiring narrow clearance chains that came with 530 non-sealed chains. SV530UWR has a max width of 22.70mm making UWR ideal for British bikes such as Norton, Triumph, also Honda 1970's CB750, CL450 etc.

UWR is specific for vintage motorcycles requiring narrow clearance chains that came with 530 non-sealed chains. SV530UWR has a max width of 22.70mm making UWR ideal for British bikes such as Norton, Triumph, also Honda 1970's CB750, CL450 etc.

RK's XRE series chains are the successor to XSO chains. Compared to XSO, XRE series chains feature a 20% longer wearlife. XRE chains include XW-sealing rings which provide two lubrication pools which help protect against high speed abrasion and prevent...

RK's XRE series chains are the successor to XSO chains. Compared to XSO, XRE series chains feature a 20% longer wearlife. XRE chains include XW-sealing rings which provide two lubrication pools which help protect against high speed abrasion and prevent...

520XRU was designed for professional MotoGP racing. Featuring UW-Ring seals, XRU is a lightweight professional racing chain. The UW seals reduce friction while maintaining optimal horsepower delivery from the start of the race to the end. Developed in...

520XRU was designed for professional MotoGP racing. Featuring UW-Ring seals, XRU is a lightweight professional racing chain. The UW seals reduce friction while maintaining optimal horsepower delivery from the start of the race to the end. Developed in...

RK's XRE series chains are the successor to XSO chains. Compared to XSO, XRE series chains feature a 20% longer wearlife. XRE chains include XW-sealing rings which provide two lubrication pools which help protect against high speed abrasion and prevent...

Used by professional SX and MX race teams the MXZ chain features high-quality pins, bushings and rollers for maximum durability.

When conditions turn muddy, sandy, wet, or if riders just want a long lasting racing chain, RK offers a sealed supercross, motocross and off-road racing chain called MXU. RK's GB520MXU features ultra-thin UW-seals which is perfect for bikes with narrow...

Cannot be used with the CRF250R/X due to clearance

Advanced RK XW-ring offers three lubrication barriers to reduce friction and heat to offer longer wear resistance.

One of RK Chain's most popular ATV rated chain is the 520EXW. EXW is an XW-sealed chain and is the best high-speed, extreme heat performance off-road and ATV chain available today. RK's XW-Ring seals utilize triple barrier grease protection plus...