RALBDX Rear Final Gear Differential for Honda Rancher 420 (2007–2013) — Direct-Fit Complete Assembly

High-quality rear final gear differential assembly compatible with Honda FourTrax Rancher 420 (2007–2013) — a direct-fit replacement for part number 41300-HP5-600 to restore drivetrain function.

This RALBDX rear final gear differential is engineered as a direct replacement for Honda Rancher TRX420 models from 2007 through 2013. Built to match factory mounting points and gear ratios, it arrives as a complete assembly to minimize installation time and avoid sourcing multiple components. The unit is intended to restore rear-end power transfer, reduce drivetrain noise when properly installed, and return reliable handling characteristics when matched with correct gear lube and adjustment.

How will this differential improve my Rancher’s performance?

Installing a correctly matched rear final gear differential restores proper torque distribution to the rear wheels and eliminates many symptoms of a worn or failing unit. You should notice smoother acceleration, reduced whining or grinding noises, and more predictable cornering once the differential is installed and broken in.

• Direct-fit for specified TRX420 model years—no modification to mounts required.
• Complete assembly includes pinions and carrier ready for installation.
• Replace part numbers 41300-HP5-600 and 41300HP5600 for accurate compatibility.

What symptoms indicate I need this rear differential replacement?

Several common driveline issues point to differential wear or failure. If you hear persistent whining or grinding from the rear, detect fluid leaks, see uneven tire wear, feel vibrations during acceleration, or experience poor handling in turns, the differential assembly may be at fault.

• Whining or grinding noises from the rear while driving.
• Visible differential fluid leaks around the housing or seals.
• Tire damage or abnormal wear patterns on rear tires.
• Vibrations under acceleration and handling issues while turning.

How should the differential be installed and maintained?

Professional installation and correct filling of gear oil are critical for longevity and quiet operation. Follow standard gear oil procedures, torque specifications, and break-in driving recommendations to prevent dry running, overheating, or premature wear.

• Use the manufacturer-recommended gear oil and fill to the specified level.
• Observe proper torque settings and seal replacements during install.
• Drive fully during the break-in period to seat gears, as recommended.
• Change gear lube every 20,000–40,000 miles, or per use conditions.

Will this unit fit my exact Rancher model year and trim?

This assembly is designed to fit Honda FourTrax Rancher TRX420FE, TRX420FM, TRX420FPE, TRX420FPM, TRX420TE, and TRX420TM produced from 2007 through 2013. Verify your VIN/model code and the OEM part number before purchasing to ensure an exact match.

• Compatible with TRX420FE, TRX420FM (2007–2013).
• Compatible with TRX420FPE, TRX420FPM (2009–2013).
• Compatible with TRX420TE, TRX420TM (2007–2013).
• Direct replacement for part numbers 41300-HP5-600 / 41300HP5600.

Who is this for? This RALBDX rear final gear differential suits owners, mechanics, and restoration projects requiring a direct-fit replacement for Honda Rancher TRX420 models from 2007–2013. It's intended for those wanting a complete assembly to reduce downtime—riders who notice driveline noise, leaks, or handling problems and need a like-for-like swap. Choose professional installation if you’re unfamiliar with gear-lube procedures or differential adjustments to ensure quiet, reliable operation after installation.