BELTS, CHAINS & SPROCKETS
FEATURES
All RK chains are prestressed and pre-stretched to ensure equal load distribution and minimal maintenance. They’re
made of the highest-grade medium carbon alloy steel available, with all components shot peened and heat treated.
SIZE AND TYPE
WEAR LIFE INDEX AVERAGE TENSILE STRENGTH (lb.) MAXIMUM ENGINE CC STREET/ DIRT
HOW TO ORDER
520 Std.
100
7,200
250/NA
530 Std.
100
7,200
400/NA
Precut lengths are individually boxed with a
GB 420 MXZ
200
5,000
150/ 100
clip-type connecting link and all bulk rolls include
200
5,800
250/ 125
GB 520 MXZ4
300
9,000
NA/ 500
GB 520 MXU
600
9,000
NA/ 500
end of the PART # (example: PART #RKM52082 for
a 520 Standard chain with 82 links).
520 EXW, GB 520 EXW 1,000
8,500
400/ 750
XW-RING (EXW)
  • High-speed, extreme heat performance chains that can handle
  • 520 CONNECTING LINK
    large cc engines
    DESCRIPTION
    P ART  #
    SUG. RETAIL
  • Suitable for up to 750cc off-road motorcycles
  • Clip connecting link R18-520EXW
    $8.90
  • Chains include clip connecting link
  • 520 EXW-CUT-TO-LENGTH
    GB 520 EXW (GOLD COLOR)-CUT-TO-LENGTH
    SUG.
    SUG.
    SUG.
    SUG.
    SUG.
    SUG.
    P ART  #
    RETAIL P ART  #
    RETAIL P ART  #
    RETAIL P ART  #
    RETAIL
    P ART  #
    RETAIL
    P ART  #
    RETAIL
    RK520EXW-100
    $99.17 RK520EXW-110
    $109.10 RK520EXW-120
    $119.00 GB520EXW-100
    $109.42
    GB520EXW-110
    $120.33
    GB520EXW-120
    $131.30
    SEALED RACING UW-RING (MXU)
  • The lightest sealed-ring racing chain on the market
  • Designed to deliver consistent power delivery with an extended chain life
  • Ideal for race applications between 125-500cc
  • Chains include clip connecting link
  • GB 520 MXU (GOLD COLOR)-CUT-TO-LENGTH
    GB 420 MXZ4 (GOLD COLOR)-CUT-TO-LENGTH
    LINKS
    P ART  #
    SUG. RETAIL
    LINKS
    P ART  #
    SUG. RETAIL
    DESCRIPTION
    P ART  #
    SUG. RETAIL
    110
    1222-0190
    $125.83
    116
    1222-0193
    $132.70
    Clip connecting link
    1225-0144
    $8.90
    114
    1222-0192
    130.42
    120
    1222-0194
    137.28
    HEAVY DUTY (MXZ/4)
  • These lightweight chains are developed from advanced alloy materials and manufacturing technology
  • Moderately priced, both 420 and 428 MXZ chains are the strongest in their class, giving you the best
  • value-performance rating of any MX chain in the world today
  • With a maximum tensile strength of 9,000 lb. and weight of 2.89 lb., the newly designed GB 520 MXZ4 is
  • the lightest and strongest MX chain on the market
  • For 100cc/ 125cc applications
  • Chains include clip connecting link
  • GB 420 MXZ (GOLD COLOR)-CUT-TO-LENGTH OR BULK
    420 CONNECTING LINK
    SUG.
    SUG.
    SUG.
    DESCRIPTION
    P ART  #
    SUG. RETAIL
    LINKS PART #
    RETAIL
    LINKS PART #
    RETAIL
    LINKS PART #
    RETAIL
    Gold clip connecting link
    R18422MXZ
    $2.43
    82
    RK420MXZ82
    $27.52
    114
    RK420MXZ114
    $38.25
    124
    RK420MXZ124
    $41.63
    RK420MXZ100
    33.57
    116
    RK420MXZ116
    38.93
    126
    RK420MXZ126
    42.28
    104
    RK420MXZ104
    34.90
    118
    RK420MXZ118
    39.60
    130
    RK420MXZ130
    43.63
    110
    RK420MXZ110
    36.92
    120
    RK420MXZ120
    40.28
    132
    RK420MXZ132
    44.28
    GB 428 MXZ (GOLD COLOR)-CUT-TO-LENGTH OR BULK
    428 CONNECTING LINKS
    NO. OF
    SUG.
    NO. OF
    SUG.
    NO. OF
    SUG. DESCRIPTION
    P ART  #
    SUG. RETAIL
    LINKS
    P ART  #
    RETAIL
    LINKS
    P ART  #
    RETAIL
    LINKS
    P ART  #
    RETAIL
    25’
    R18429MXZ
    $240.17
    100
    RK428MXZ100 $40.03
    118
    RK428MXZ118 $47.23
    130
    RK428MXZ130 $52.05 Gold clip connecting link
    R18430MXZ
    2.95
    RK428MXZ110
    44.03
    120
    RK428MXZ120
    48.03
    132
    RK428MXZ132
    52.85
    114
    RK428MXZ114
    45.63
    124
    RK428MXZ124
    49.63
    116
    RK428MXZ116
    46.43
    126
    RK428MXZ126
    50.43
    GB 520 MXZ4 (GOLD COLOR)-CUT-TO-LENGTH
    520 CONNECTING LINK
    LINKS
    P ART  #
    SUG. RETAIL
    LINKS
    P ART  #
    SUG. RETAIL DESCRIPTION
    P ART  #
    SUG. RETAIL
    116
    1221-0023
    $99.80
    120
    1221-0024
    $103.23 Clip connecting link
    1225-0099
    $3.92
    GOLD/ BLACK 520 CONNECTING LINKS
    DESCRIPTION
    P ART  #
    SUG. RETAIL
    DESCRIPTION
    P ART  #
    SUG. RETAIL
    Clip connecting link
    R18-GB520EXW
    $8.90
    Rivet connecting link
    R18-GB521EXW
    $8.90
    STANDARD
  • Heat-treated medium carbon alloy steel construction
  • For ATVs and motorcycles up to 500cc that did not come with an O-ring or heavy-duty chain as standard equipment
  • Chains include clip connecting link
  • M520-CUT-TO-LENGTH OR BULK
    M530-CUT-TO-LENGTH
    NO. OF
    SUG.
    NO. OF
    SUG.
    NO. OF
    SUG.
    NO. OF LINKS
    P ART  #
    SUG. RETAIL
    LINKS
    P ART  #
    RETAIL
    LINKS
    P ART  #
    RETAIL
    LINKS
    P ART  #
    RETAIL
    118
    RKM530118
    $26.50
    82
    RKM52082
    $18.40
    86
    RKM52086
    $19.32
    92
    RKM52092
    $20.67
    RKM52084
    18.85
    90
    RKM52090
    20.20
    98
    RKM52098
    22.02
    DESCRIPTION
    P ART  #
    SUG. RETAIL
    130
    RKM520130
    29.20 25’
    R18-M521
    $107.77
    2018 PARTS UNLIMITED ATV/UTV