LKSM 420 Motorcycle Chain 132-Link Kit with Chain Breaker — 420 roller chain for 100–125cc, hardened steel, connector links

LKSM 420 Motorcycle Chain 132-link kit delivers a durable 420-standard roller chain with a built-in chain breaker and connector links for quick, on-bike installation.

If you maintain a mini moto, scooter, or small-displacement dirt bike, swapping to a correctly sized, hard-wearing chain is one of the simplest upgrades for reliable power transfer. This LKSM kit includes a 132-link 420 roller chain made from high-grade carbon steel, a compatible 420–530 chain breaker tool, and six connector links so you can size and fit the chain without specialty shop tools.

Will this chain fit my mini ATV, go-kart, or scooter?

The LKSM 420 chain follows the 420 roller-chain standard and is supplied with 132 links so you can shorten it to the correct length for 100cc–125cc applications. Always confirm your vehicle's chain type and the required number of links before trimming.

• 420 standard roller chain sizing compatible with many 100cc–125cc engines
• Works with common small-bike models like Honda CRF50/70/80 and XR50/70/80
• 132-link length gives room for custom fitting and tensioning
• Includes connector links for secure rejoin without rivet-only tools

How strong and wear-resistant is the LKSM chain?

This chain is produced from high-carbon steel and heat-treated components to resist wear and preserve consistent power transfer under load. Hardened link plates and heat-treated rollers increase fatigue life compared with untreated chains, making it well suited for off-road and frequent-use riding.

• High-grade carbon steel construction for structural durability
• Heat-treated rollers and hardened links for improved wear resistance
• Engineered for smooth sprocket engagement and reduced stretch
• Manufactured to standard tolerances for predictable performance

What tools and parts are included, and how do I install it?

The kit arrives ready for fitting: the 132-link 420 chain, a 420–530 adjustable chain breaker for removing excess links, and six 420 connector links to rejoin the chain. Installation requires basic mechanical skills—position the chain, size it to correct tension, use the breaker to remove link pins, then fasten using the connector links.

• Included: 1x 420 132-link chain, 1x 420–530 chain breaker, 6x connector links
• Fit steps: drape chain over sprockets, measure tension, break to length, attach connector
• Tool tip: the supplied breaker covers 420–530 sizes for added flexibility
• Check final tension and lubrication before riding

Will this chain need special maintenance or early replacement?

Routine maintenance keeps any chain functioning longer; this LKSM chain benefits from standard lubrication, periodic tension checks, and avoiding abrasive contaminants. Replace the chain when excessive stretch, binding links, or visible wear on rollers and plates appear.

• Lubricate regularly with a quality chain lube for longer life
• Inspect tension, seals, and sprocket teeth every few rides in harsh conditions
• Replace if significant elongation, stiff links, or tooth wear are present
• Correct alignment reduces premature wear and improves efficiency

Who is this for: The LKSM 420 132-link chain kit is aimed at riders, mechanics, and DIY enthusiasts who service 100cc–125cc motorcycles, mini ATVs, quads, go-karts, and scooters. It suits anyone who wants a robust, serviceable replacement chain with on-the-bike fitting capability—especially riders who value simple field repairs and long-lasting components.