PGN Bearings 420 Motorcycle Chain 10ft (240-Link) ANSI #420 Single-Roller — Carbon Steel, 2 Connectors

PGN 420 motorcycle chain — a 10-foot (240-link) carbon-steel ANSI #420 single-strand roller chain supplied with two connecting links for quick fitment on 100cc–125cc dirt bikes, ATVs, go-karts and scooters.

This heavy-duty replacement chain provides a straightforward way to restore drivetrain performance on small motorcycles and utility vehicles. Built from hardened carbon steel to resist wear, the ANSI #420 roller profile is a common fit for 100cc, 110cc and 125cc machines where a single-strand chain is required. The 10-foot length lets you cut to size for custom installations or maintain stock setups without multiple short links.

Will this chain fit my 100cc, 110cc or 125cc dirt bike?

Compatibility depends on sprocket pitch and width rather than engine displacement alone. The PGN 420 uses the ANSI #420 pitch and single-strand width commonly found on small dirt bikes, pit bikes, ATVs, mini bikes and go-karts. Check your sprocket pitch markings or measure chain pitch before installing.

• ANSI #420 pitch — matches many 100–125cc small-frame drivetrains
• 240 links (10 feet) — long enough to size for front and rear sprockets
• Two connecting links included — simplifies joining and trial fitting

How durable is the PGN 420 chain for off-road use?

The chain is manufactured from carbon steel and heat-treated for improved fatigue resistance and working life. While not stainless, the carbon-steel construction offers a balance of strength and cost-effectiveness for everyday riding and utility chores. Routine lubrication and correct tensioning will significantly extend service intervals.

• Heat-treated carbon steel components for wear resistance
• Roller-style links reduce friction against sprockets
• Designed for routine maintenance schedules common to off-road use

How do I install and size this 10-foot (240 link) chain?

Installation is a simple cut-and-fit process: wrap the chain around the sprockets, remove excess links, and secure with one of the provided connecting links. Use appropriate pliers or a chain breaker to split links safely, and torque the connecting link clip to manufacturer guidelines. After installation, set correct chain slack and lubricate thoroughly before riding.

• Measure and remove excess links with a chain breaker
• Attach one of the two supplied connecting links to join ends
• Adjust tension and lubricate before first use

What applications beyond dirt bikes can this chain serve?

Because it follows ANSI #420 dimensions and single-strand design, this chain adapts to many light industrial and hobby uses. It’s suitable for go-karts, mini bikes, scooters, garden equipment, and certain conveyor or small machinery tasks where a 420-sized roller chain is required. Its 10-foot length provides extra material for cutting to nonstandard setups.

• Go-karts and mini bikes — common small-vehicle drivetrains
• Light machinery and conveyors — where 420 pitch is specified
• Spare chain stock for workshops and maintenance kits

Who is this for? The PGN 420 10-foot chain suits riders, DIY mechanics and small-fleet owners who need a reliable, economical replacement for single-strand drivetrains on 100cc–125cc dirt bikes, ATVs, go-karts and similar equipment. It’s ideal when you want ample chain length to customize fit, two spare connecting links for easier joining, and a durable carbon-steel construction that responds well to regular maintenance.