JMCHstore 255mm Rear Axle Assembly for Monster Mega Moto & Coleman Mini Bikes — Hardened Steel, Includes Spacer & Washers

This complete rear axle kit replaces worn or damaged axles and restores secure wheel alignment and bearing support. Machined to the dimensions commonly used on 80cc–105cc mini bikes, the assembly includes the axle shaft, a centering spacer, four metal flat washers, and threaded ends sized for lock nuts. A corrosion-resistant surface treatment and hardened steel core provide an extended service life, while compatibility with 6201RS wheel bearings makes it an easy swap during routine maintenance or part upgrades.

Will this axle fit my Monster Mega Moto or Coleman mini bike?

The axle is designed as a 255mm rear wheel axle for Monster Mega Moto MM-B80 and MM-B105 models and fits several Coleman mini bike variants such as the Realtree RB100 and RT100, plus oryxearth 105cc kids dirt bikes. Confirm your bike uses 6201RS bearings and a 255mm axle length before purchasing. If your frame or hub uses different bearings or lengths, measure the current axle to ensure a proper match.

• Intended models: MM-B80, MM-B105, RB100, RT100, oryxearth 105cc
• Length: 255mm standard rear axle shaft
• Bearing compatibility: fits 6201RS wheel bearings
• Threaded ends: accept lock nuts for secure fastening

How does the construction affect durability and performance?

The axle is forged from high-strength, hardened steel and precision-machined for straightness and accurate fits. A corrosion-resistant finish resists rust and environmental wear, which helps maintain smooth wheel rotation over time. Precision machining reduces wobble, protects bearings, and distributes loads evenly to prevent premature failure.

• Hardened steel core for high load capacity
• Corrosion-resistant coating to extend lifespan
• Precision machining for accurate wheel alignment
• Threaded ends for secure lock-nut retention

What parts are included and how do they improve installation?

The kit arrives complete with a spacer and four flat metal washers alongside the axle shaft, so you don’t have to hunt for matching hardware. The spacer centers the wheel within the frame, while the washers distribute pressure across the bearing seals and hub faces to reduce stress points. Threaded ends accept lock nuts that keep the assembly tight under vibration and riding loads.

• One 255mm rear axle shaft, pre-machined
• One centering spacer to position the wheel
• Four metal flat washers to equalize load on bearings
• Threaded axle ends ready for lock nut installation

How simple is installation and maintenance?

Installation is straightforward for anyone comfortable with basic mini bike maintenance: remove the wheel, replace the axle and spacer, add washers, and torque the lock nuts to spec. The axle’s standard sizing and bearing compatibility minimize the need for additional parts. Routine checks of torque and signs of corrosion will keep the axle performing reliably for seasons of use.

• Straight swap in most MM-B80/MM-B105 and RB100/RT100 setups
• Uses common 6201RS bearings—no specialty parts required
• Threaded ends simplify locking and periodic retorque
• Low-touch maintenance: inspect for rust and retorque as needed

Who is this for: This axle assembly is aimed at mini bike owners, mechanics, and hobbyists who need a rugged replacement rear axle for 80cc–105cc models from Monster Mega Moto, Coleman, and oryxearth. It suits riders restoring older bikes, upgrading worn components, or keeping a fleet of youth dirt bikes in reliable running condition. If you want a direct-fit, heavy-duty axle with spacer and washers included for a hassle-free wheel reassembly, this JMCHstore kit is engineered for that purpose.