YOXUFA 420 Mini Bike Drive Chain Kit — 90‑Link Alloy Steel with Chain Breaker

YOXUFA 420 replacement chain is a 90-link alloy-steel drive chain kit for mini bikes that includes a chain breaker, master links, and adjusters to restore reliable power transfer.

When a worn or broken chain leaves your mini bike sidelined, this ready-to-install 420 chain kit gives you the parts needed for a fast, durable repair. Engineered from corrosion-resistant alloy steel, the chain is built to withstand road grime and regular riding while the included tools and hardware simplify sizing and installation. The kit is tailored to popular mini and pocket bike models, so you can get back to riding with minimal downtime.

Will this chain fit my Coleman, Baja, or TrailMaster mini bike?

Yes — the YOXUFA 420 is designed for many common mini bike models. Compatibility covers Coleman Powersports CT200U, BT200X, CT200U-EX variants, Baja Motorsports MB165/MB200, Massimo and Hensim MB200 models, TrailMaster MB200, and similar 196–212cc 6.5hp engines.

• Chain size: standard 420 with 90 links for typical mini bike sprocket spacing.
• Fits engines: Predator 212cc/196cc, Coleman CT200U/BT200X families.
• Also compatible with: Baja Warrior, Massimo, Hensim, TrailMaster mini bikes.
• If needed: remove or add links with the supplied chain breaker for precise fit.

How durable is the YOXUFA alloy-steel chain?

The chain is manufactured from a hardened alloy steel with a treated surface to resist wear and corrosion. That improves longevity under normal riding conditions and reduces the frequency of replacements compared with untreated chains.

• Alloy-steel construction for tensile strength and fatigue resistance.
• Surface treatment improves corrosion and abrasion resistance.
• 90-link length provides enough material for commonly required sizing adjustments.

What tools and extras are included to make installation easier?

This kit includes practical hardware and a chain breaker so you can size and join the chain without needing additional tools. Multiple master links and adjusters let you secure the chain and fine-tune tension after installation.

• 1 x 420-530 chain breaker for removing or adding links.
• 5 x master links so you can quickly reconnect the chain.
• 2 x 15 mm chain adjusters to set correct tension at the rear axle.

How should I size and install the chain for the best performance?

Begin by fitting the chain around the front and rear sprockets, then use the chain breaker to remove excess links until proper tension is achieved. Finish by joining the chain with a master link and using the adjusters to achieve manufacturer-recommended slack.

• Check sprocket alignment before final tensioning to avoid premature wear.
• Leave the recommended slack as specified in your mini bike manual.
• Use the included adjusters to maintain even tension on both sides of the axle.

Who is this for: This YOXUFA 420 chain kit is aimed at mini bike owners, mechanics, and DIY riders who need a robust, ready-to-install replacement for common 196–212cc mini bikes. It suits riders restoring older bikes, maintaining fleet vehicles, or upgrading worn drivetrains — especially where compatibility with Coleman, Baja, Massimo, Hensim, TrailMaster, and similar models is required. The included breaker and multiple master links make it a convenient option for anyone who prefers to handle chain replacement themselves.