RK 520MXU - Thin Sealed Chain

Part Number
725.12.91
Grouped product items
Product Name Price Qty
RK GB520MXU - Thin Sealed Chain - 100 Links - Gold
5 in stock
£72.95
RK GB520MXU - Thin Sealed Chain - 102 Links - Gold
0 in stock - Available to order
£73.95
RK GB520MXU - Thin Sealed Chain - 106 Links - Gold
2 in stock
£76.95
RK GB520MXU - Thin Sealed Chain - 112 Links - Gold
1 in stock
£85.95

One of the lightest, strongest and narrow sealed 520 chains available.

Next generation of chains featuring RK’s Ultra Thin Seal UW-Rings, which extremely improves the chain life and lowers friction, providing high performance under especially muddy conditions.

Weight: 102 Links ≈ 1482g
Average tensile strength: 9000 lbf / 40000 N

Pin Length / Chain Width: 18.0mm
Split Pin Width: 19.3mm
Rivet Pin Width: 18.1mm

Standard Sizes:

Bike Year Model Sprockets Links
Sherco 2002 to 2006 200, 250, 290, 320 10-42 101
  2002 to 2006 125 9-44 101
  2007 to 2016 200, 250, 290, 300, 320 10-42 100
  2007 to 2011 125 9-48 103
  2017 to 2019 250, 300 9-44 101
  2017 to 2019 125 9-56 107
  2020 to 2022 250, 300 9-42 100
GasGas Pro 2002 to 2018 250, 280, 300 11-42 102
  2002 to 2018 200 10-42 102
  2002 to 2012 125 9-44 102
  2013 on 125 9-48 104
  2019 on 250, 280, 300 10-39 100
Beta 2000 to 2008 Rev3 250, 270 11-41 100 (101)
  2000 to 2008 Rev3 200 11-42 101
  2007 to 2008 Rev3 125 9-43 104
  2009 to 2014 Evo 250, 290, 300 11-41 100
  2014 on Evo 300 10-42 100
  2015 on Evo 250 10-42 100
  2009 on Evo 200 11-42 101
  2009 on Evo 125 9-43 101
Montesa 1997 to 2004 315R 10-40 100
  2005 on 4RT 10-41 100
Scorpa 2002 to 2009 250SY 10-38 100
  2014-2016 SR and Twenty 250, 280 10-42 100
  2014-2016 SR and Twenty 125 9-48 103
  2017 to 2019 SC 250, 300 9-44 101
  2017 to 2019 SC 125 9-56 107
  2020 to 2022 SC 250, 300 9-42 100
TRS 2016 on ONE, RR, Gold 250, 280 & 300 10-40 100
  2018 on ONE, RR, Gold, 125 9-48 104
Vertigo 2016 to 2018 250, 300 9-38 100
  2018 DL12 250, 300 10-42 103
  2019 on 225, 250, 280, 300 10-42 103
  2023 DL12 225, 250 9-40 101
  2023 DL12 280, 300 10-40 102
  2020 on 125 9-48 106
  2021 200  9-42 102
  2022 JBR 200, 250, 280 9-40 101
  2023 Nitro 250 9-40 101
More Information
Manufacturer RK Chains
Sherco Part Code 1433 (99 Links), 1700 (99 Links), C265 (100 Links), C081 (101 Links), C310 (102 Links), 3376 (103 Links)
Beta Part Code 12-0677, 12-06770, 1206770 000 (100 Links), 12-06771, 1206771 000 (101 Links)
GasGas Part Code BT280310036 (102 Links), BT120210036 (104 Links)
Scorpa Part Code C310 (102 Links)
TRS Part Code 70401 (100 Links), 70453 (104 Links)
Vertigo Part Code V-1031
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