BOLD MAGENTA part numbers are new for 2025 PARTS-UNLIMITED.COM 2025 | STREET CHAINS & DRIVE BELTS 1078 GB 420 MXZ (GOLD COLOR) - CUT-TO-LENGTH OR BULK NO. OF LINKS PART # 82 RK420MXZ82 100 RK420MXZ100 104 RK420MXZ104 110 RK420MXZ110 NO. OF LINKS PART # 114 RK420MXZ114 118 RK420MXZ118 120 RK420MXZ120 124 RK420MXZ124 NO. OF LINKS PART # 126 RK420MXZ126 130 RK420MXZ130 132 RK420MXZ132 Gold clip connecting link R18422MXZ 428 MXZ1 - CUT-TO-LENGTH OR BULK NO. OF LINKS 428 MXZ1 NATURAL PART # GB 428 MXZ1 GOLD PART # 100 1221-0471 110 - 1221-0472 116 - 1221-0474 118 - 1221-0475 NO. OF LINKS 428 MXZ1 NATURAL PART # GB 428 MXZ1 GOLD PART # 120 1221-0469 1221-0476 124 - 1221-0477 126 - 1221-0478 130 - 1221-0479 NO. OF LINKS 428 MXZ1 NATURAL PART # GB 428 MXZ1 GOLD PART # 132 - 1221-0480 134 1221-0470 1221-0481 Clip connecting link 1225-0740 1225-0812 520 MXZ5 - CUT-TO-LENGTH OR BULK NO. OF LINKS GB 520 MXZ5 GOLD PART # 114 1221-0422 116 1221-0423 NO. OF LINKS GB 520 MXZ5 GOLD PART # 120 1221-0424 Clip connecting link 1225-0767 HEAVY-DUTY CHAINS (MXZ/MXZ1/MXZ4/MXZ5) •Made for the serious motocross racer with all components heat-treated for high performance and durability •Features chromoly steel construction with seamless rollers and bushings, and oversized alloy pins for added strength •MXZ5 is the lightest and strongest MX chain on the market with an impressive tensile strength and a weight of only 3.06 lbs. •Ideal for professional level from 80cc to 500cc open class racing •Chains include clip connecting link •GB 420 MXZ – Made for the serious motocross racer •For street bikes up to 150cc and dirt bikes up to 150cc •Maximum tensile strength of 4,980 lbs. •GB 428 MXZ1 – For street bikes up to 150cc and dirt bikes up to 150cc •Maximum tensile strength of 6,070 lbs. •GB 520 MXZ5 – Works MX race chain •For 125cc to 500cc applications •Maximum tensile strength of 8,500 lbs. •Wear life index of 450 HEAVY DUTY (MXZ/4) •Made for the serious motocross racer with all components heat-treated for high-performance durability •Features chromoly steel construction with seamless rollers and bushings, and oversized alloy pins for added strength •Ideal for professional level from 80cc to 500cc open class racing •Chains include clip connecting link 420 MXZ - CUT-TO-LENGTH OR BULK NO. OF LINKS NATURAL GOLD 120 1220-0341 1221-0263 126 1220-0343 - 134 - 1221-0264 GB428MXZ4 - CUT-TO-LENGTH OR BULK NO. OF LINKS PART # 120 1221-0265 CONNECTING LINKS DESCRIPTION PART # 420MXZ clip connecting link (natural) 1225-0333 DESCRIPTION PART # 420MXZ4 clip connecting link (gold) 1225-0528 DESCRIPTION PART # 428MXZ4 clip connecting link (gold) 1225-0529
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