YOXUFA 420 Chain 132 Links Replacement for 110cc 125cc 70cc

YOXUFA 420 Chain (132 links) is a heavy‑duty gold replacement chain kit designed to fit a wide range of 50cc–125cc pit bikes, mini bikes, go‑karts and small ATVs with reliable wear resistance and included installation tools.

This 420 chain kit from YOXUFA supplies a durable, corrosion‑resistant drive chain plus master links, a thimble, and a chain breaker so you can resize and install the chain yourself. Manufactured from hardened alloy steel and finished for improved wear life, it’s intended as a direct replacement for many Chinese and off‑brand minibike and small ATV drivetrains. The package is sized for 132 links, gold plated for visibility and corrosion resistance, and includes hardware that covers common 50cc–125cc platforms.

Which vehicles will this 420 chain fit?

This chain is specified for 420 pitch and comes with 132 links, making it compatible with a broad set of mini motorcycles, pit bikes, and small ATVs after proper measurement and any necessary refit. It lists direct compatibility with many Chinese and popular aftermarket models used on 50cc–125cc machines.

• SSR, TaoTao, Coolster, Apollo, Baja, Kazuma mini bikes and ATVs
• CRF50/70/80 and XR50/70/80 style small dirt bikes when refitted
• Mini bike models such as Coleman CT200U, Baja MB165/MB200, Massimo and TrailMaster variants
• Works for many 4‑stroke small engines including Predator 212 conversions with correct sprocket alignment

How durable and serviceable is the chain under street or trail use?

The chain is made from alloy steel and treated with a wear‑resistant surface finish to extend service life compared with untreated links. While regular maintenance (cleaning, lubrication, and tension checks) remains essential, the plated finish helps resist rust and abrasion from dirt and moisture.

• Alloy steel construction for strength under load
• Surface treatment for enhanced wear and corrosion resistance
• Includes multiple master links for quick connection or future repairs
• Recommended periodic lubrication and tension adjustments to maximize life

What tools and parts are included, and how do you adjust the length?

The kit contains practical hardware to help you size and secure the chain: ten master links, a thimble, and a chain breaker tool sized for common mini chain pitches. The chain breaker lets you remove pins to shorten the chain; follow alignment guidance to avoid bending or damaging pins while pressing them out.

• 1 × 420 chain, gold finish, 132 links
• 10 × 420 master links for secure joining and spares
• 1 × 420 chain breaker (compatible with 420–530 chains) to trim length
• 1 × 420 thimble for stable chain connection and routing

Are there installation tips or common fit issues to watch for?

Measure sprocket tooth counts and chain wrap before cutting to the final length to avoid a too‑short chain. When using the included chain breaker, retract the pressure pin into the nut and align the chain’s center pillar with the breaker’s bottom hole to avoid pin bending or misalignment.

• Verify front/rear sprocket sizes and required chain wrap first
• Use the provided breaker carefully; align the center pin with the bottom hole
• Test fit with slack and adjust tension per your vehicle’s manual
• Keep spare master links for emergency roadside repairs

Who is this for: This YOXUFA 420 chain kit is designed for owners, mechanics, and hobbyists who maintain or upgrade small dirt bikes, pit bikes, mini bikes, go‑karts and compact ATVs in the 50cc–125cc range. It’s especially useful for those who want a ready‑to‑install replacement with tools included, and for anyone converting or refitting sprockets where a longer 132‑link chain plus spare master links make adjustments easier.