XIKOBY Rear Wheel Assembly for Razor MX350 MX400 12.5x2.75 with Knobby Tire & #25 Chain Kit

The XIKOBY 12.5 x 2.75 rear wheel assembly kit replaces the rear wheel and drive chain on Razor MX350 and MX400 Dirt Rocket electric bikes for a durable, preassembled swap.

Designed as a direct-fit replacement, this kit combines a knobby street tire mounted on a rim with a full #25 roller drive chain and installation accessories. It’s intended for riders or repairers who need a ready-to-install rear wheel and complete drivetrain upgrade, including the tools and links to restore chain tension and connectivity.

Will this wheel fit my Razor MX350 or MX400?

Yes, the wheel and tire assemble to 12.5 x 2.75 and is specified to fit later production versions of the Razor MX350 and MX400 Dirt Rocket models. Confirm your bike’s model code and wheel dimensions before ordering to ensure compatibility.

• Wheel size: 12.5 x 2.75 inches (rim and tire pre-mounted)
• Compatibility note: Razor MX350 (V23+), Razor MX400 (V19+)
• Check your bike’s current rear wheel diameter and hub spacing

What does the kit include and how does it help during repair?

The package is ready to install and contains the essentials for replacing both the rear rolling assembly and the worn drive chain. That reduces trips to separate suppliers and gives you the fastening and tensioning parts needed for a full drivetrain refresh.

• One preassembled 12.5 x 2.75 street tire mounted on rim
• One #25 roller chain, 132 links, with 10 master links
• Chain breaker tool and single chain tensioner included
• Extra components: red stem valve cap and two mounting screws

How durable is the tire and chain, and what performance can I expect?

The tire uses a rubber compound and knobby pattern aimed at wear resistance and improved traction on paved or light off-road surfaces. The steel chain and treated chain breaker are built to resist corrosion and maintain proper fit across repeated use.

• Tire: durable rubber with anti-skid tread pattern for grip
• Chain: #25 roller design, 132 links for correct length options
• Chain breaker: corrosion-treated steel for long service life
• Tensioner keeps chain aligned and correctly tensioned after install

How simple is installation and what tools or skills are required?

The rear wheel arrives preassembled for quicker replacement; the chain comes with master links and a chain breaker for cutting and connecting to length. Basic mechanical skills and a few hand tools are enough for most home repairs.

• Preassembled wheel reduces disassembly time
• Chain breaker included to size the chain precisely
• Master links simplify reconnection without welding
• Recommended tools: wrench set, screwdriver, pliers, and basic bike tools

Who is this for: This XIKOBY kit is aimed at Razor Dirt Rocket owners, repair shops, and DIY mechanics who need a dependable, all-in-one rear wheel and drivetrain replacement. It’s suitable when your existing rear tire shows wear, your chain is stretched or damaged, or when you want to restore safe, consistent drive performance without hunting multiple parts.