BOLD MAGENTA part numbers are new for 2025 CHAINS PARTS-UNLIMITED.COM OFFROAD | 2025 CHAINS 737 HIGH-PERFORMANCE MOTORCYCLE CHAIN continued on next page. EXCLUSIVE RACING SERIES NON-SEALED RACING CHAIN (415ERZ, 520ERT3, 520MX) •ER (exclusive racing) chains are the pinnacle of racing performance chains that are meticulously developed and utilized by the highest performing factory racing teams worldwide •An industry’s best strength/weight ratio gives you enough strength for the toughest abuse without the extra weight •520ERT3 chain is the most widely used racing chain among factory race teams across multiple disciplines: SX/MX, ATV/MX, Flat Track, Supermoto, etc. •520MX chain has the highest rated tensile strength among D.I.D’s non-sealed chains and is utilized for SX/ MX racing, especially for higher powered bikes •Solid bushings and D.I.D’s SDH pin treatment gives you the greatest wear resistance, tensile strength, and impact resistance possible •Traditional D.I.D gold-plating finish HOW TO ORDER D.I.D chain is available precut or bulk in 25-ft. rolls. Precut lengths are available in the lengths listed, sold in a box, and each includes either a clip or a rivet-type connecting link.All bulk rolls include connecting links. SUPER NON-O-RING SERIES (NZ) •D.I.D’s professional high-performance non-O-ring chain • DHA pin treatment, solid bushings and quad-stake riveted pins give you great performance and wear resistance •420NZ3 and 428NZ available in G&B or natural DESCRIPTION PART # COLOR 420NZ3 Clip connecting link 1225-0096 Natural DESCRIPTION PART # COLOR 420NZ3 (CONT) Clip connecting link 1225-0097 Gold SUPER NON O-RING SERIES – 420NZ3 DESCRIPTION PART # 420NZ3 Natural, 100 links 1221-0018 Natural, 110 links 1221-0019 DESCRIPTION PART # 420NZ3 (CONT) Natural, 120 links 1221-0020 Gold, 120 links 1221-0022 DESCRIPTION PART # 420NZ3 (CONT) Natural, 130 links 1221-0021 Gold, 130 links 1221-0482 MX OFFROAD SERIES PART # COLOR 520MX D18-520MX-120 Gold (120 links) DESCRIPTION PART # COLOR 520MX Clip connecting link D183144 Gold CHAIN SEAL AVG. TENSILE STRENGTH (LBS.) MAXIMUM ENGINE CC 415ERZ - 4,540 250 420STD - 3,970 80 420NZ3 - 4,930 150 428D - 4,230 125 428HD - 5,250 125 428NZ - 5,740 125 428VX X 7,420 350 520NZ - 8,050 250 520STD - 6,700 250 520VO O 8,000 750 520VX3 X 8,210 800 CHAIN SEAL AVG. TENSILE STRENGTH (LBS.) MAXIMUM ENGINE CC 520DZ2 - 7,870 450 520ERT3 - 8,300 450 520MX - 8.930 500 520ATV2 X 8,430 750 520ERVT X 8,440 500 520VR46 X 8,210 800 520ERV7 X 8,800 750 520ZVMX X 8,745 1200 525STD - 6,930 400 525NZ - 8,820 400 525VO O 9,220 900 CHAIN SEAL AVG. TENSILE STRENGTH (LBS.) MAXIMUM ENGINE CC 525VX3 X 9,220 1000 525VR46 X 9,220 1000 525ZVMX2 X 10,408 1300 530STD - 6,930 400 530NZ - 8,600 750 530VO O 9,220 1000 530VX3 X 9,220 1000 530ZVMX2 X 10,408 1400 630V O 10,820 1200 630K - 9,990 750 DESCRIPTION PART # 415ERZ Gold, 120 links 1221-0115 Clip connecting link 1225-0229 Rivet connecting link 1225-0230 DESCRIPTION PART # 520ERT3 Gold, 120 links 1221-0275 Rivet connecting link 1225-0548
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