XIKOBY 25H 132‑Link Chain & 13T Motor Sprocket Kit for Razor MX650 MX500 — Hardened Steel, Tensioner & Tools

The XIKOBY 25H 132-link chain and 13-tooth motor sprocket kit is a complete replacement and upgrade set designed to restore and improve the drivetrain on Razor MX650, MX500 and compatible dirt rocket electric bikes.

When a worn chain or stripped sprocket starts causing slack, skips, or inefficient power transfer, this kit supplies every common replacement part you need: a full-length 25H chain, extra master links, a hardened motor sprocket, a user-friendly chain breaker, and an adjustable chain tensioner. Each component uses heat-treated, high-strength steel alloys so the set tolerates off-road stresses while being easy for a mechanically inclined owner to fit at home.

How does this kit change bike performance?

Replacing a worn chain and sprocket pair restores smooth power delivery and reduces the chance of the chain jumping or binding under load. The included 13T motor sprocket slightly changes gearing for quicker acceleration depending on your setup, while the heavy-duty construction resists premature wear.

• Full 132-link 25H chain improves chain wrap and strength.
• 13T hardened motor sprocket provides a more responsive drive feel.
• Heat-treated steel resists stretching and breakage.
• Extra master links allow accurate chain length adjustments.

What comes in the kit and why are those pieces useful?

The kit bundles all the small parts riders often find themselves missing during roadside repairs: master links to reconnect the chain, a breaker tool to size the chain correctly, and a tensioner to keep alignment and prevent derailing. These parts let you complete the job without sourcing additional hardware.

• 132-link 25H chain for full-length replacement or custom fitting.
• Ten master links for secure reconnection and reuse options.
• Chain breaker tool simplifies removing excess links cleanly.
• Adjustable tensioner with bearings and spring keeps proper alignment.

Is installation something I can do at home?

Yes — basic hand tools and the included chain breaker make this a doable weekend repair for most DIY mechanics. The chain arrives complete; you remove excess links, use a master link to join, install the new motor sprocket if desired, and adjust the tensioner for correct slack and alignment.

• Pre-assembled chain reduces initial setup steps.
• Chain breaker tool included for clean link removal.
• Master links simplify reconnection without press tools.
• Tensioner with lock nut secures final adjustment and alignment.

What materials and durability features should I expect?

The chain and sprocket are manufactured from high-strength steel alloys and receive heat treatment to increase tensile strength and wear resistance. These processes reduce stretching and the chance of tooth failure, giving a longer service life under off-road riding conditions.

• Heat-treated steel construction for both chain and sprocket.
• Higher tensile strength to resist breakage during high load.
• Wear-resistant finish helps extend service intervals.
• Robust tensioner bearings and spring for lasting alignment.

Who is this for: riders and home mechanics who own Razor MX650, MX500, SX500, RSF650, SX650, XRF500 or similar dirt rocket electric bikes and want a durable, all-in-one drivetrain refresh. It's ideal for users replacing worn chains, upgrading for slightly quicker acceleration, or preparing a bike for off-road conditions without needing multiple parts orders.