BOLD MAGENTA part numbers are new for 2026 PARTSCANADA.COM 2026 | STREET CHAINS & DRIVE BELTS 774 WEARLIFE CICLOMOTORI MOPED SPORTBIKE TOURING STREET 420 /124 OROY 50cc 65cc 85cc 125cc 250cc 350cc 450cc 500cc 600cc 750cc 900cc 1000cc 1200cc 1300cc 1400cc 415 /90 ORO 428 /126 EB-ORO 520 /135 EB-ORO 428 /126 ORT2 520 /135 ZRT 525 /137 ZRT 530 /136 ZRT 520 /135 ZRP 525 /137 ZRP 530 /136 ZRP2 ENDURO 428 /126 ORN 520 /135 ORE 520 /135 ZRE 525 /137 ZRE ZRP RT ZRT ULTRA PREMIUM BASIC 1 2 3 Leggerezza Lightness Durata Wear life Resistenza Strength ROAD CHAIN COMPARISON RK CHAIN ORDER CHART RK chain is available cut-to-length. Precut lengths are individually boxed with a clip-type connecting link. NOTE: If your motorcycle came factory-equipped with an O-ring chain, it must be replaced with an O-ring chain. SIZE AND TYPE WEAR LIFE INDEX AVG. TENSILE STRENGTH (LBS.) MAX ENGINE CC STREET/ DIRT STANDARD M420 100 4,200 80/80 M428 100 4,500 125/80 M520 100 6,800 250/NA M525 100 6,800 400/NA M530 100 6,800 400/NA HEAVY-DUTY 420MXZ 300 5,000 150/125 GB420MXZ 300 5,000 150/125 428MXZ 300 5,800 250/125 GB428MXZ 300 5,800 250/125 M428H 200 5,400 200/NA 520MXZ4 300 9,000 500/NA SIZE AND TYPE WEAR LIFE INDEX AVG. TENSILE STRENGTH (LBS.) MAX ENGINE CC STREET/ DIRT HEAVY-DUTY (CONT) GB520MXZ4 300 9,000 500/NA M520H 200 7,700 400/NA 530DR 250 10,400 1500 drag 530KS 200 8,000 600/NA M530H 200 7,700 500/NA SEALED RING 428SO 400 5,500 250/200 520EXW 1,000 8,500 400/750 GB520EXW 1,000 8,500 400/750 520GXW 1,000 8,800 1000/750 GB520GXW 1,000 8,800 1000/750 GB520MXU 600 9,000 NA/500 SIZE AND TYPE WEAR LIFE INDEX AVG. TENSILE STRENGTH (LBS.) MAX ENGINE CC STREET/ DIRT SEALED RING (CONT) 520SO 600 7,700 400/400 520XSO 750 8,500 750/750 GB520XSO 750 8,500 750/750 525GXW 1,000 9,300 1100/800 GB525GXW 1,000 9,300 1100/800 525XSO 750 8,850 900/750 GB525XSO 750 8,850 900/750 530GXW 1,000 10,000 1400/900 GB530GXW 1,000 10,000 1400/900 530XSOZ1 750 9,500 1000/1000 GB530XSOZ1 750 9,500 1000/1000 532GSV 1,000 9,200 1300/NA XW-RING (EXW) •Advanced design XW-ring provides better sealing to extend wear life up to 100% • High-speed, extreme heat performance chains that can handle large cc motors •EXW chains include clip connecting link SEALED UW-RING (MXU) •The lightest sealed-ring MX chain on the market •Designed for the professional motocross racer •Designed to deliver consistent power delivery with an extended chain life •Ideal for race applications between 125 to 500cc •Chains include clip connecting link 520EXW CHAINS NO. OF LINKS NATURAL PART # GOLD PART # 100 RK520EXW-100 - 110 RK520EXW-110 GB520EXW-110 120 RK520EXW-120 GB520EXW-120 NO. OF LINKS NATURAL PART # GOLD PART # Clip connecting links R18-520EXW R18-GB520EXW Rivet connecting links 503743 503760 GB520MXU (GOLD COLOR) NO. OF LINKS PART # 120 1222-0194 130 506303 CONNECTING LINKS DESCRIPTION PART # Gold clip connecting link 1225-0144 Gold rivet connecting link 1225-0145
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