BOLD MAGENTA part numbers are new for 2025 BELTS, CHAINS & SPROCKETS PARTS-UNLIMITED.COM ATV/UTV | 2025 709 HIGH-PERFORMANCE CHAINS HOW TO ORDER D.I.D chain is available pre-cut or bulk in 25’ rolls.All bulk rolls include connecting links. CHAIN SEAL AVG.TENSILE STRENGTH (LBS.) MAXIMUM ENGINE CC 420STD - 3,970 80 428HD - 5,250 125 428VX X 7,420 350 520ATV2 X 8,430 750 520NZ - 8,050 250 520STD - 6,700 250 CHAIN SEAL AVG.TENSILE STRENGTH (LBS.) MAXIMUM ENGINE CC 520VO O 8,000 750 520VX3 X 8,210 800 525VX3 X 9,220 1000 530STD - 6,930 400 530VX3 X 9,220 1000 DAI-HARD (DHA) SERIES NON-O-RING CHAIN (NZ) •D.I.D’s professional high-performance non-O-ring chain •DHA pin treatment; hard chromium-carbide layer formed on pin surface •Far better wear-resistance than other chains •Up to 19% higher tensile strength •Increased anti-oxidation performance • Solid bushings, quad-riveted pins •Comes with clip-type connecting link X-RING CHAIN (ATV) •Greatly increased sealing performance with four sections •Keeps dirt out and lubrication in •Lowest friction of all types of O-rings •Twisting action disperses the pressure and minimizes power loss •Maximum wear resistance •Comes with clip-type connecting link STANDARD SERIES NON-O-RING (STD, H) • Low-cost, high-quality solid roller chain •Quad-staked pin riveting •Special alloy steel construction •All components shot-peened and heat-treated •TFC connecting link •Extended riveted bushing anti-kink design •Pre-stretched at factory •For machines originally equipped with non-O-ring chain •Comes with clip-type connecting link SUPER NON-O-RING SERIES – 520 NZ LINKS PART # 520NZ 120 D18520NZ120 520 ATV2 X-RING CHAIN LINKS PART # 520ATV2 84 1223-1385 94 1223-1386 96 1223-1387 98 1223-1388 LINKS PART # 520ATV2 (CONT) 100 1223-1382 102 1223-1383 104 1223-1384 DESCRIPTION PART # 520ATV2 25’ 1223-1389 Gold clip connecting link 1225-0546 DESCRIPTION PART # 520ATV2 (CONT) Gold rivet connecting link 1225-0547 STANDARD SERIES – 420 STD LINKS PART # 420STD 82 D18-421-82 86 D18-421-86 90 D18-421-90 100 D18-421-100 110 D18-421-110 LINKS PART # 420STD (CONT) 120 D18-421-120 126 D18-421-126 130 D18-421-130 132 D18-421-132 DESCRIPTION PART # 420STD 25’ D18-3096 DESCRIPTION PART # 420STD (CONT) Clip connecting link D18-3097 HIGH-PERFORMANCE CHAINS continued on next page. DESCRIPTION PART # 520NZ Clip connecting link D18522NZ
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