Best Powersports Drive Chains for Motocross Racing (2026)
We selected chains by fit (420 series), construction (chrome-moly, heavy-duty vs lightweight), link options, and overall value for motocross use
The Verdict
- Best Overall: RK GB420MXZ-100 Racing Chain (420) Gold 100 Link — Best for lightweight race builds: non-O-ring 420 chain offering lighter weight and motocross-oriented durability
- Best Value: RK GB420MXZ-104 Chain (420) Gold 104 Link Heavy Duty — heavy-duty option: 420 chain with longer 104-link configuration for flexible fitment and tough use
This roundup covers powersports drive chains suited for motocross racing, focusing on fit, durability, and value for off-road conditions. Picks were chosen by comparing chain series, link counts, construction (chrome-moly, heavy-duty vs non-O-ring), and common motocross fitment requirements
Top Picks
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1
Best Overall RK GB420MXZ-100 Racing Chain (420) Gold 100 Link
Best for lightweight race builds: non-O-ring 420 chain offering lighter weight and motocross-oriented durability
Lightweight non O-ring racing chain with chrome-moly steel construction and heat-treated components. Customers note solid durability, good fit, and value for money
- lightest non O-ring MX/SX chain
- seamless rollers and bushings
- exclusive HIT heat-treatment process
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2
Best Value RK GB420MXZ-104 Chain (420) Gold 104 Link Heavy Duty
heavy-duty option: 420 chain with longer 104-link configuration for flexible fitment and tough use
Non O-ring racing chain forged from chrome-moly steel with heat-treated components. Delivers solid performance and precise fit for MX/RD use; customers note good appearance and value, with some reporting occasional missing parts or durability concerns
- heavy-duty 420-series chain
- HIT heat-treated components
- seamless rollers and bushings with oversized pins
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3
RK GB420MXZ-124 racing chain (420 series) gold 124 link
Best for long-run setups: 124-link 420 chain built from chrome-moly for strength while keeping weight low
Lightweight non O-ring racing chain with chrome-moly steel construction and heat-treated components. Strong, durable performance with a gold finish; customers note solid fit and value for money
- heavy-duty chrome-moly steel
- non o-ring, lightest and strongest in class
- exclusive HIT heat treatment
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4
RK Racing Chain GB420MXZ-140 (420 Series) Gold 140 Link Heavy Duty
Best for extensive resizing: 140-link heavy-duty 420 chain ideal when you need extra length for custom gearing
Gold 140-link non O-ring racing chain with chrome-moly steel construction and heat-treated components. Delivers solid strength and fit for serious motocross use, as noted by customers who value durability and performance
- lightest and strongest non O-ring MX chain
- heat-treated using HIT process
- strongest in its class for value-performance