Belleone 420 Roller Chain 132-Link Cut-to-Fit Kit with Chain Breaker & Master Links — Pre-Oiled Alloy Steel for 50–212cc Bikes

Belleone's 420 standard roller chain kit is a 132-link, cut-to-fit drive chain with a compatible chain breaker and master links, built for 50–212cc ATVs, dirt bikes, mini bikes and more.

This replacement chain kit supplies a ready-to-trim roller chain and the toolset needed to size and install it. The 420 chain is pre-oiled at the factory, made from high-strength alloy steel and rated for demanding small-engine drive applications where a stout, removable-link chain is required. The package includes a chain breaker and extra connector master links so you can cut, join and tension the chain to suit your rear sprocket and chassis layout.

What machines will this 420 chain fit?

It works across a wide range of small-displacement vehicles commonly using 420 pitch chains. The length and removable links make it adaptable to many mini-bikes, ATVs and scooters; always confirm sprocket pitch and width before trimming.

• Compatible with 50cc–212cc ATVs, dirt bikes, go-karts, mini bikes, scooters and quads.
• Fits Honda CRF50/70/80 and XR50/70/80 series where 420 chain is specified.
• Works for popular mini-bike brands: SSR, Coolster, TaoTao, Roketa, Coleman CT200U, Baja MB200 series.
• Check sprocket pitch (1/2") and roller width (1/4") before installation.

How does the kit make cutting and installing easier?

The included chain breaker removes pins to shorten the chain cleanly and the extra master links let you reconnect quickly. The breaker accepts 420–530 chain sizes, so it’s useful beyond just this single chain and helps avoid trips to a repair shop for simple lengthing tasks.

• Chain breaker designed for 420–530 chain sizes; align pins properly to avoid tool wear.
• Ten connector master links are provided for repeated joins or spares.
• Pre-oiled chain reduces initial corrosion risk and eases handling during fitting.
• Cut-to-fit 132-link length gives room to size for most small engine drivetrains.

What are the technical specs and durability features?

The 420 chain follows standard dimensions for that pitch and is constructed from alloy steel with a high tensile rating for reliable load carrying on small drivetrains. Specs such as roller diameter and sprocket thickness match common aftermarket sprockets for compatibility.

• Chain number: 420; pitch: 1/2"; roller width: 1/4"; roller diameter: 5/16".
• Sprocket thickness: 0.227"; total links: 132; tensile strength approximately 4000 lb.
• Manufactured alloy steel construction for wear resistance in small-engine use.
• Factory pre-oiling helps protect during storage and shipping; wipe excess oil before installation.

Are there installation cautions I should know?

Proper pin alignment when using the breaker is essential to avoid tool damage or bent pins. Also, always confirm chain tension, lubrication and safe routing to prevent premature wear or interference with frame components.

• Ensure chain and sprocket pitches match before cutting or installing.
• Align breaker pin with chain pin to avoid damaging the tool or chain.
• After fitting, set proper chain slack and torque axle/nuts to manufacturer specs.
• Remove excess factory oil, then lubricate chain appropriately for service conditions.

This Belleone 420 chain kit is meant for DIY mechanics, small-vehicle owners and repair shops that need a versatile, cut-to-fit drive chain and a practical breaker tool. It’s well suited to hobbyists working on ATVs, pit bikes, go-karts and scooters who value an all-in-one replacement that includes spare master links and a multi-size breaker. If you’re unsure about fitment, verify your vehicle's sprocket pitch and roller width to confirm compatibility before purchase.