KAMIER 420 Drive Chain 102 Link Gold with Chain Breaker

KAMIER's 420 102-link gold drive chain kit is a complete replacement chain package with master links and a chain breaker tool designed for 50–125cc pit bikes, ATVs, go-karts, and mini motorcycles.

This kit supplies a 420-size chain with 102 links (51 internal and 51 external), finished in gold for corrosion resistance and visibility, and includes spare master links plus a chain breaker tool so you can size and install the chain yourself. It fits many small-displacement Chinese and Japanese-style dirt bikes, quads, and carts, but you should confirm sprocket tooth counts and rear sprocket size before installing—the chain is intended for 420 front and rear sprockets only, not 428 rear sprockets.

Will this chain fit my bike or ATV?

Compatibility depends on sprocket pitch and your vehicle's required chain length. The KAMIER 420 chain is the correct pitch for machines that use 420 chains and accepts adjustment by removing or adding master links for the precise fit.

• Chain size: 420 pitch with 102 links (51 internal, 51 external).
• Intended for 50cc–125cc 4-stroke pit bikes, ATVs, go-karts, and mini bikes.
• Compatible models: CRF50F, XR50R, KLX110, KX60/65, PW80, TTR90/TTR110, DR-Z110 and similar.
• Not compatible with 428 rear sprockets—confirm sprocket sizes before purchase.

How do I shorten or lengthen the chain?

The included chain breaker tool lets you remove or rejoin links to achieve the correct length. Use the tool to push rivets out of removable links and reinstall a master link or press a rivet back in place as needed.

• Use the chain breaker tool included in the kit for safe pin removal.
• Kit includes five master links for reassembly or spares.
• Adjust in small increments and verify slack/tension per vehicle specs.
• Test run and re-check tension after the first short ride to ensure proper seating.

What are the materials and finish—will it hold up outdoors?

The chain is plated in a gold finish that helps resist surface corrosion and improves visibility during inspections. While plating reduces surface rust, routine cleaning, lubrication, and proper tensioning are still required for reliable service life.

• Gold-plated exterior for added corrosion resistance and easy inspection.
• Standard riveted construction with supplied master links for joining.
• Suitable for recreational and light off-road use on small-displacement engines.
• Maintenance recommended: clean and lubricate regularly to prolong life.

What tools and parts are included in the package?

The kit arrives as a ready-to-fit package with everything needed to measure, cut, and reconnect the chain to size. You get multiple master links and a compact chain breaker so no separate specialty tools are required for most installations.

• 420 chain, 102 links total (51 internal + 51 external).
• Compact chain breaker tool for link removal and installation.
• Five master links included as spares or for reassembly.
• Basic instructions typically included—follow vehicle-specific torque and tension guidelines.

Who this is for: riders and mechanics who maintain or restore small off-road machines, pit bikes, go-karts, and ATVs that require a 420-sized chain. It's ideal for DIYers who want a complete kit with a breaker tool and spare master links, and for shops needing a ready-to-fit replacement chain for 50–125cc four-stroke mini bikes. Confirm your sprocket compatibility and follow routine maintenance to get the most from this chain kit.