MRELC 415H-110L Heavy-Duty 415H Chain Kit for 49cc–80cc Motorized Bicycles — 110 Links + Breaker & 10 Connector Links

MRELC 415H-110L is a heavy-duty 110-link motorized chain kit with a chain breaker and connector links designed to replace or upgrade drive chains on 49cc–80cc 2-stroke motorized bicycles and small dirt bikes.

This kit bundles a 415H 110L chain, a chain breaker tool and ten 415H connector links so you can size, install and secure a high-strength drive chain quickly. Built for Chinese mini-bike and pit-bike platforms that commonly use 415/428-series drive systems, the package is intended for riders who need a durable, easy-to-fit replacement for worn or mismatched chains. It’s especially useful when adapting non‑OEM parts, swapping gearing, or performing field repairs.

Will this chain fit my 49cc or 80cc motorized bicycle?

The 415H-110L chain is sized for 415-series applications and the long 110-link length provides flexibility to fit many small-engine frames. It commonly fits 49cc, 60cc, 66cc and 80cc two-stroke motorized bicycles and many Chinese dirt bikes and pit bikes. Some Honda models that accept 428 chains may also be compatible, but you should check pitch and sprocket width before install.

• Chain type: 415H, 110 links for adjustable fit
• Compatible engines: 49cc–80cc two-stroke setups
• Cross-compatibility: works with many TaoTao, Buyang, Lifan, Kazuma, SUNL systems
• Verify: check sprocket pitch and width for precise match

How do I shorten and install the chain using the included breaker?

The kit’s chain breaker lets you remove excess links and press pins safely for a custom fit. After measuring chain wrap and determining the required length, use the breaker to drive pins out, install a connector link, then recheck tension and alignment. Installation is straightforward with basic hand tools and a little mechanical experience.

• Measure chain wrap around sprockets first
• Use the included chain breaker to remove links
• Secure with one of the ten 415H connector links provided
• Adjust tension and align sprockets before final torque

What are the kit’s durability and compatibility features?

The 415H designation indicates a heavy-duty variation of the 415 pitch chain, engineered for higher tensile strength relative to standard hobby chains. The kit’s multiple connector links and the breaker tool make it practical for field repairs and gear changes. It’s supplied to fit a wide range of Chinese-made small motorcycles, ATVs, mowers and motorized bicycles used in racing, commuting or trail riding.

• Heavy-duty 415H construction for improved wear resistance
• 110 links for broad compatibility and custom cuts
• Includes 10 connector links for repeat repairs
• Tool included for onsite shortening and maintenance

Who is this for? This MRELC 415H-110L chain kit is aimed at DIY mechanics, pit crews and riders of small-engine bikes and pit bikes who need a robust, adjustable replacement chain. It’s a practical choice if you work with multiple Chinese-brand machines (TaoTao, Lifan, Buyang, SUNL, Kazuma, etc.), perform routine maintenance or need a reliable repair kit to keep a motorized bicycle or minibike running between shop visits. If you’re unsure about sprocket compatibility, measure your existing chain pitch and sprocket width or consult a mechanic before buying.