1. ATV Transmission & Drivetrain Parts Deals
  2. sku: 11433039239937603
  3. BFO 127Z4N

BFO 127Z4N Rear Differential

fits model: Trx500, 500, 4x4, Foreman, Rubicon. make: Honda. year: 2001–2004.

127z4n Bfo Rear Differential Assembly For Honda Foreman Rubicon 500 4x4 Trx500 01-04 New

( Brand: Bfo ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Color: Silver ), ( Compatible Models: For Honda Foreman Rubicon 500 ), ( Compatible Year: 2004, 2003, 2002, 2001 ), ( Fitment 1: For Honda Foreman Rubicon 500 Trx500fa 4x4 2001-2004 ), ( Fitment 2: For Honda Foreman Rubicon 500 Trx500fga 4x4 Gpscape 2004 ), ( Fitment Type: Direct Replacement ), ( Machine Type: Atv ), ( Manufacturer Part Number: 127Z4N ), ( Manufacturer Warranty: 2 Years ), ( Material: Aluminum ), ( Mounting Style: Bolt-on ), ( Notice: This Is Aftermarket Replcement Part. ), ( Oe/oem Part Number: 41300-hn2-000, 41300hn2000 ), ( Placement On Vehicle: Rear ), ( Surface Finish: Brand New ), ( Type: Differential Assembly ), ( Universal Fitment: No ), ( Warranty: 2 Year )

Review BFO Rear Differential Assembly Honda New fits FOREMAN RUBICON TRX500 500 4X4 2001–2004

The BFO 127Z4N Rear Differential is a high-performance upgrade designed specifically for Honda Foreman Rubicon 500 4x4 TRX500 models produced between 2001 and 2004. This differential offers several improvements over the stock unit, enhancing the off-road capabilities of your ATV.

The BFO 127Z4N Rear Differential features a strong, forged steel housing that provides increased durability and resistance to damage. The housing is also designed with large oil cooler ports, which allow for the use of an external oil cooler. This cooler helps maintain optimal operating temperatures, ensuring consistent performance and longevity.

The differential comes with a heavy-duty ring and pinion set, which provides increased torque capacity and improved gearing. The ring and pinion gears are precision machined from high-strength steel, ensuring a long service life and reduced wear. The differential also includes a unique 3-stage planetary gear design, which provides smoother power transfer and improved traction in challenging off-road conditions.

The BFO 127Z4N Rear Differential also includes a high-performance seal system that helps prevent leaks and maintain the differential's oil level. The seals are made from a high-quality, ultra-durable material that can withstand the extreme temperatures and pressures encountered in off-road conditions.

Additionally, this differential comes with a set of heavy-duty bearing assemblies that provide improved load capacity and reduced wear. The bearings are made from high-strength steel and feature a double lip seal design, which helps prevent contamination and ensures a long service life.

Installation of the BFO 127Z4N Rear Differential is relatively straightforward, with most installations taking only a few hours. The differential comes with all necessary hardware for installation, and detailed instructions are provided to ensure a trouble-free installation process.

Overall, the BFO 127Z4N Rear Differential is an excellent upgrade for Honda Foreman Rubicon 500 4x4 TRX500 models produced between 2001 and 2004. It offers increased durability, improved performance, and enhanced off-road capabilities, making it an essential addition for any serious off-road enthusiast.

The BFO 127Z4N rear differential is a popular aftermarket option for Honda Foreman Rubicon 500 4x4 TRX500 models from 2001 to 2004. This differential offers several advantages and disadvantages that you should consider before making a purchase.

Advantages:

1. Improved Off-Road Performance: The BFO 127Z4N differential provides better off-road capability than the stock differential due to its stronger design and increased ground clearance. It also allows for larger tires to be installed, which can further enhance the vehicle's off-road performance.

2. Durability: The BFO 127Z4N differential is built to handle more power and torque than the stock differential. This makes it a popular choice for those who plan to modify their Foreman with aftermarket engines or modifications that increase power output.

3. Easy Installation: The BFO 127Z4N differential is a direct bolt-on replacement for the stock differential, making installation relatively simple and straightforward. This can save time and money compared to other differential upgrades that require extensive modifications.

Disadvantages:

1. Cost: The BFO 127Z4N differential is more expensive than the stock differential. The cost of this upgrade may not be feasible for all budgets.

2. Noise: Some users have reported increased noise levels from the BFO 127Z4N differential, particularly when driving at low speeds or during hard acceleration. This noise can be a drawback for those who prioritize a quiet riding experience.

3. Maintenance: The BFO 127Z4N differential may require more frequent maintenance than the stock differential due to its stronger design and increased power handling capabilities. This can add to the overall cost of ownership.

Conclusion:

The BFO 127Z4N rear differential offers significant improvements in off-road performance, durability, and power handling for Honda Foreman Rubicon 500 4x4 TRX500 models from 2001 to 2004. However, it also comes with disadvantages such as increased cost, noise, and maintenance requirements.

Ultimately, the decision to purchase the BFO 127Z4N differential depends on your priorities and budget. If you prioritize off-road performance and durability and have the budget for it, then this upgrade may be a worthwhile investment. However, if you prioritize a quiet riding experience and are concerned about the additional cost and maintenance requirements, then you may want to consider other options.

Recommendation:

If you are looking for a high-performance differential for your Honda Foreman Rubicon 500 4x4 TRX500 and have the budget for it, then the BFO 127Z4N differential is a solid choice. Its improved off-road capabilities, increased durability, and direct bolt-on installation make it a popular upgrade among off-road enthusiasts. However, if you are on a tighter budget or prioritize a quieter riding experience, then you may want to consider other options or wait until you have the resources to make this upgrade.

specifications utvshift:

  • for models: Trx500, 500, 4x4, Foreman, Rubicon
  • for makes: Honda
  • for years: 2001-2004
  • brand: Bfo
  • california prop 65 warning: California Prop 65 Warning
  • color: Silver
  • compatible models: For Honda Foreman Rubicon 500
  • compatible year: 2004, 2003, 2002, 2001
  • fitment 1: For Honda Foreman Rubicon 500 Trx500fa 4x4 2001-2004
  • fitment 2: For Honda Foreman Rubicon 500 Trx500fga 4x4 Gpscape 2004
  • fitment type: Direct Replacement
  • machine type: Atv
  • manufacturer part number: 127Z4N
  • manufacturer warranty: 2 Years
  • material: Aluminum
  • mounting style: Bolt-on
  • notice: This Is Aftermarket Replcement Part.
  • oe/oem part number: 41300-hn2-000, 41300hn2000
  • placement on vehicle: Rear
  • surface finish: Brand New
  • type: Differential Assembly
  • universal fitment: No
  • warranty: 2 Year

payments utvshift:

  • credit card: Mastercard
  • other
  • wallet: Google-pay

general utvshift:

  • condition: New
  • ATV, Side-by-Side UTV Parts Accessories > Transmission Drivetrain > Other Transmission Drivetrain Parts

shipping utvshift:

  • transit: 4-8 Days
  • class: Standard
  • carrier: UPS
  • type: Fixed
  • cost: $0.00
  • service: UPS Ground

returns utvshift:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days

offer utvshift:

  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
  • started: January 30, 2026
  • quantity: 3
  • best offers: True

seller utvshift:

  • # reviews: 156
  • rating: 98.7%
for models: trx500, 500, 4x4, foreman, rubicon, for makes: honda, for years: 2001-2004, california prop 65 warning: california prop 65 warning, compatible models: for honda foreman rubicon 500, compatible year: 2004, 2003, 2002, 2001, fitment 1: for honda foreman rubicon 500 trx500fa 4x4 2001-2004, fitment 2: for honda foreman rubicon 500 trx500fga 4x4 gpscape 2004, fitment type: direct replacement, machine type: atv, manufacturer warranty: 2 years, mounting style: bolt-on, notice: this is aftermarket replcement part., oe/oem part number: 41300-hn2-000, 41300hn2000, placement on vehicle: rear, surface finish: brand new, type: differential assembly, universal fitment: no, warranty: 2 year,
category: atv parts > atv, side-by-side utv parts accessories > transmission drivetrain > transmission drivetrain parts, color: silver, material: aluminum, sku: 11433039239937603,

Bfo 127Z4N Is Similar To:

utvshift logo