BOLD MAGENTA part numbers are new for 2022 BELTS, CHAINS & SPROCKETS PARTS-UNLIMITED.COM ATV/UTV | 2022 555 FEATURES All RK chains are pre-stressed 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. HOW TO ORDER RK chain is available cut-to-length or in bulk. Precut lengths are individually boxed with a clip-type connecting link, and all bulk rolls include clip-type connecting links.When ordering precut lengths, the number of links is indicated at the end of the PART # (example: PART #RKM52082 for a 520 Standard chain with 82 links). SIZE AND TYPE WEAR LIFE INDEX AVERAGE TENSILE STRENGTH (LB.) MAXIMUM ENGINE CC STREET/DIRT 520 Std. 100 7,200 250/NA 530 Std. 100 7,200 400/NA GB 420 MXZ 200 5,000 150/100 GB 428 MXZ 200 5,800 250/125 GB 520 MXZ4 300 9,000 NA/500 GB 520 MXU 600 9,000 NA/500 520 EXW, GB 520 EXW 1,000 8,500 400/750 GOLD/BLACK 520 CONNECTING LINKS DESCRIPTION PART # SUG. RETAIL Clip connecting link R18-GB520EXW $8.90 Rivet connecting link R18-GB521EXW 8.90 GB 520 EXW (GOLD COLOR) - CUT-TO-LENGTH NO. OF LINKS PART # SUG. RETAIL 100 GB520EXW-100 $109.42 110 GB520EXW-110 120.33 NO. OF LINKS PART # SUG. RETAIL 120 GB520EXW-120 $131.30 520 CONNECTING LINK DESCRIPTION PART # SUG. RETAIL Clip connecting link R18-520EXW $8.90 520 EXW - CUT-TO-LENGTH NO. OF LINKS PART # SUG. RETAIL 100 RK520EXW-100 $99.17 110 RK520EXW-110 109.10 NO. OF LINKS PART # SUG. RETAIL 120 RK520EXW-120 $119.00 XW-RING (EXW) • High-speed, extreme heat performance chains that can handle large cc engines • Suitable for up to 750cc off-road motorcycles • Chains include clip connecting link GB 520 MXZ4 (GOLD COLOR) - CUT-TO-LENGTH DESCRIPTION PART # SUG. RETAIL Clip connecting link 1225-0144 $8.90 GB 520 MXU (GOLD COLOR) - CUT-TO-LENGTH LINKS PART # SUG. RETAIL 110 1222-0190 $125.83 114 1222-0192 130.42 LINKS PART # SUG. RETAIL 116 1222-0193 $132.70 120 1222-0194 137.28 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 • Weighs only 3 lb. per 100 links but delivers huge tensile strength • Ideal for race applications between 125-500cc • Chains include clip connecting link GB 520 MXZ4 (GOLD COLOR) - CUT-TO-LENGTH LINKS PART # SUG. RETAIL 116 1221-0023 $99.80 LINKS PART # SUG. RETAIL 120 1221-0024 $103.23 520 CONNECTING LINK DESCRIPTION PART # SUG. RETAIL Clip connecting link 1225-0099 $3.92 GB 428 MXZ (GOLD COLOR) - CUT-TO-LENGTH NO. OF LINKS PART # SUG. RETAIL 100 RK428MXZ100 $40.03 114 RK428MXZ114 45.63 118 RK428MXZ118 47.23 NO. OF LINKS PART # SUG. RETAIL 120 RK428MXZ120 $48.03 124 RK428MXZ124 49.63 126 RK428MXZ126 50.43 NO. OF LINKS PART # SUG. RETAIL 130 RK428MXZ130 $52.05 132 RK428MXZ132 52.85 GB 428 BULK AND CONNECTING LINK DESCRIPTION PART # SUG. RETAIL 25’ R18429MXZ $240.17 Gold clip connecting link R18430MXZ 2.95 GB 420 MXZ (GOLD COLOR) - CUT-TO-LENGTH OR BULK LINKS PART # SUG. RETAIL 82 RK420MXZ82 $27.52 100 RK420MXZ100 33.57 104 RK420MXZ104 34.90 110 RK420MXZ110 36.92 LINKS PART # SUG. RETAIL 114 RK420MXZ114 $38.25 118 RK420MXZ118 39.60 120 RK420MXZ120 40.28 124 RK420MXZ124 41.63 LINKS PART # SUG. RETAIL 126 RK420MXZ126 $42.28 130 RK420MXZ130 43.63 132 RK420MXZ132 44.28 420 CONNECTING LINK DESCRIPTION PART # SUG. RETAIL Gold clip connecting link R18422MXZ $2.43 HEAVY DUTY (MXZ/4) • These lightweight chains are developed from advanced alloy materials and manufacturing technology • Feature chromoly steel construction with seamless rollers and bushings, and all components are heat-treated using RK’s exclusive HIT (Heat Induction Transfer) process • 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 M530 - CUT-TO-LENGTH NO. OF LINKS PART # SUG. RETAIL 118 RKM530118 $26.50 M520 - CUT-TO-LENGTH OR BULK NO. OF LINKS PART # SUG. RETAIL 82 RKM52082 $18.40 84 RKM52084 18.85 86 RKM52086 19.32 NO. OF LINKS PART # SUG. RETAIL 90 RKM52090 $20.20 92 RKM52092 20.67 98 RKM52098 22.02 NO. OF LINKS PART # SUG. RETAIL 130 RKM520130 $29.20 DESCRIPTION PART # SUG. RETAIL 25’ R18-M521 $107.77 STANDARD • Heat-treated medium carbon alloy steel construction • All components heat-treated and shot peened for maximum strength • Two-point pin riveting and solid rollers • 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 • 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
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