KAMIER 25H Roller Chain 10ft (480 Links) replacement chain kit with breaker and 10 master links for Razor scooters & mini bikes

KAMIER 25H roller chain is a 10-foot, 480-link replacement chain kit that includes a chain breaker tool and ten master links for easy repair or customization of small gas and electric bikes, scooters, ATVs, and go-karts.

This heavy-duty replacement chain is built to fit common kids’ and mini vehicle drivetrains, including many Razor models (MX350, MX500, MX650, SX500, E300, E200, E100), small 2-stroke pocket rockets, 47cc–50cc mini choppers, and compact ATVs and go-karts. The full 10-foot length gives you room to size and trim the chain to exact fit, and the included chain breaker and extra master links make installation fast whether you're doing maintenance, upgrading gearing, or rebuilding a project vehicle.

Will this chain fit my Razor or mini bike model?

Compatibility covers a wide range of small-vehicle drivetrains that use 25H sizing. Check your existing chain’s stamp or measure pitch if uncertain. The kit is designed for hobbyist and replacement use across electric and gas models listed below.

• Compatible with Razor MX350, SX350, MX400, MX500, MX650, SX500 series
• Works with Razor E100, E175, E200, E300, E325 and RSF650/RSF350 models
• Fit for many 43cc–50cc 2-stroke pocket rocket and mini chopper applications
• Also suitable for drifter karts, dune buggies, and small ATVs using 25H chains

How do I size and cut the 10-foot chain for my sprockets?

The chain comes 10 feet long so you can trim to the exact number of links needed. Use the included chain breaker tool to remove excess links safely and fit the master link to join. Always measure with the sprockets mounted and the vehicle at ride height for accurate length.

• Measure around both sprockets plus tension allowance before cutting
• Use the included chain breaker to push pins out cleanly
• Fit a master link and secure its clip facing away from contact points
• Set proper chain tension and re-check after a short break-in ride

What comes in the package and what tools are needed?

The kit ships complete with the chain and essential installation hardware so you won’t need additional parts for a standard replacement. Basic hand tools like pliers and wrenches are useful; the supplied breaker eliminates the need for a separate pin press.

• Included: 25H chain (10ft / 300cm, 480 links)
• Included: chain breaker tool for cutting and pin removal
• Included: ten master links for multiple joins or spares
• Recommended: pliers, adjustable wrench, and a torque source for final checks

How durable is this chain for off-road and kids’ use?

Made for small vehicle duty, the 25H specification balances strength with compact size to handle typical loads from kids’ scooters, mini bikes, and small ATVs. Proper installation and routine lubrication will extend service life, especially under dust, dirt, or light off-road conditions.

• Engineered for low- to moderate-load drivetrains common in mini vehicles
• Spare master links included to simplify future repairs
• Regular cleaning and lube improve wear resistance in dirty conditions
• Use correct tension and alignment to prevent premature stretching

Who is this for: This KAMIER 25H 10-foot roller chain kit is ideal for hobbyists, parents, and small-vehicle mechanics who maintain or restore Razor electric dirt bikes, pocket rockets, mini choppers, ATVs, go-karts, and similar low-displacement machines. It suits anyone who wants a full-length chain to size to fit, with the convenience of a breaker tool and spare master links included for straightforward repairs and custom chain runs.