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RK Racing Chain GB420MXZ-140 (420 Series) Gold 140 Link Heavy Duty

RK Racing Chain ★ 4.0/5 · ItemOracle Score Mid-Range

$45 USD
Price subject to change
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RK Racing Chain GB420MXZ-140 (420 Series) Gold 140 Link Heavy Duty MX/SX Racing Non O-Ring Chain with Connecting Link

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

Highlights

  • lightest and strongest non O-ring MX chain
  • heat-treated using HIT process
  • strongest in its class for value-performance

Pros

  • heavy-duty non O-ring construction
  • chrome-moly steel with heat-treated components
  • oversized alloy pins for added strength
  • seamless rollers and bushings
  • gold finish appreciated by users

Cons

  • mixed feedback on master link inclusion

Best For

  • motocross racing
  • MX/SX racing setups
  • high-performance chain upgrade
  • replacement for stock chains
  • fitment for Honda Grom and similar small bikes
  • fitment for 2005 Honda CRF70F

Features

  • Chrome-moly steel construction with seamless rollers and bushings
  • Heat-treated using RK's HIT (Heat Induction Transfer) process
  • Oversized alloy pins for added strength
  • Maximum tensile strength rated at 5000 foot-pounds, 1.76 lb weight
  • Designed for professional level 50cc to 125cc open class racing

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