BOLD MAGENTA part numbers are new for 2025 CHAINS PARTS-UNLIMITED.COM OFFROAD | 2025 CHAINS 739 VO SERIES PRO O-RING CHAIN •D.I.D’s high-performance O-ring chain •Solid bushings for longest possible wear •Reinforced rollers for greatest impact resistance •Recommended for machines originally equipped with O-ring chains •Originally comes with clip connecting link PROFESSIONAL O-RING SERIES - 520VO PART # COLOR LINKS 520VO CHAINS 1222-0370 Natural 82 1222-0372 Natural 86 1222-0373 Natural 88 1222-0376 Natural 96 1222-0377 Natural 98 1222-0378 Natural 100 1222-0627 Gold and black 100 1222-0380 Natural 104 1222-0381 Natural 106 1222-0382 Natural 108 1222-0383 Natural 110 1222-0628 Gold and black 110 1222-0384 Natural 112 PART # COLOR LINKS 520VO CHAINS (CONT) 1222-0385 Natural 114 1222-0386 Natural 116 1222-0387 Natural 118 1222-0388 Natural 120 1222-0629 Gold and black 120 BULK CHAIN AND CONNECTING LINKS 1222-0369 Natural 25’ 1222-0630 Gold and black 25’ 1225-0374 Natural Clip connecting link 1225-0727 Gold and black Clip connecting link 1225-0375 Natural Rivet connecting link 1225-0728 Gold and black Rivet connecting link PROFESSIONAL O-RING SERIES - 525VO DESCRIPTION PART # 525VO Clip connecting link 1225-05711 Rivet connecting link 1225-05721 1 Includes rivet-style connecting link. PROFESSIONAL O-RING SERIES - 530VO DESCRIPTION PART # 530VO Rivet connecting link 1225-05731 1 Includes rivet-style master link. PROFESSIONAL O-RING SERIES - 525VO LINKS PART # 525VO 108 1222-0558 110 1222-0559 120 1222-0560 BULK CHAIN 25’ 1222-0557 PROFESSIONAL O-RING SERIES - 530VO LINKS PART # 530VO 100 1222-0562 102 1222-0563 104 1222-0564 106 1222-0565 108 1222-0566 110 1222-0567 LINKS PART # 530VO (CONT) 112 1222-0568 114 1222-0569 116 1222-0570 118 1222-0571 120 1222-0572 130 1222-0573 DESCRIPTION PART # 520 ERVT Gold (120 links) 1222-0556 Rivet connecting link 1225-0585 Clip connecting link 1225-0586 DESCRIPTION PART # 520ERV7 Gold, 120 links 1223-1457 Gold rivet connecting link 1225-0593 EXCLUSIVE RACING X-RING CHAIN (ERVT/ERV7) •Highest performing off-road racing chains with industry-best strength/weight ratio •D.I.D’s patented X-Ring seal design gives you reduced friction, great lubricant sealing for increased chain life, and great protection from the elements •Increased pin rigidity to resist chain deformation and elongation and gives a quicker and more smooth response • Highest levels of racing; great for enduro, MX, GNCC, Road Racing, etc.
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