Front & Rear 4.88 Koyo Bearing Ring and Pinion Gear Package

Features:

• Front and rear 4.88 ring and pinion gears
• Optimized gear ratio improves towing performance
• Includes high-quality Koyo bearings
• Precision heat-treated for superior durability
• Restores power loss from larger tires
• Reduces transmission strain for better efficiency
• Complete master install kit included
• Engineered for off-road and heavy-duty use
• Quiet operation with precision-machined gears
• Direct-fit installation with no modifications needed
• Backed by a 2-year manufacturer warranty

High-Quality Gear Package with Koyo Bearings

Upgrading your truck’s gearing can make a massive difference in performance, and the Revolution Front & Rear 4.88 Koyo Bearing Ring and Pinion Gear Package is built to do just that. If you've added larger tires to your 2011-2016 F-250, you’ve probably noticed a loss in power, sluggish acceleration, and increased transmission strain. That’s where a gear swap comes in. This package replaces your factory ring and pinion gears with a 4.88 ratio, bringing back lost torque and improving throttle response. Whether you’re towing heavy loads, tackling steep grades, or simply looking for a more responsive feel on the road, this setup delivers the power where you need it most. The 4.88 ratio is an ideal choice for those running oversized tires who want to restore factory-like drivability while gaining low-end grunt. Compared to taller gears like 3.73s or 4.10s, the 4.88s put your engine back into its optimal powerband, reducing strain on your transmission and improving overall efficiency. This is particularly beneficial for off-road enthusiasts who need better crawling control or for anyone towing heavy trailers on a regular basis. By keeping your RPMs in a more effective range, these gears allow your truck to move with less effort, making every drive smoother and more efficient.

Koyo Bearing Master Install kit Makes Upgrading Easy

Revolution Gear & Axle ensures top-tier quality by using high-grade steel that meets or exceeds OEM standards. These gears are precision-machined and heat-treated for maximum durability, ensuring they hold up under extreme stress. Unlike cheaper aftermarket options, these gears are engineered for quiet operation, meaning you won’t deal with excessive gear whine or vibration. The package also includes a complete master install kit featuring premium Koyo bearings. Koyo is known for producing some of the most reliable and long-lasting bearings in the industry, ensuring your differential runs smoothly for years to come. What's more, installation is made straightforward with a direct-fit design that requires no modification to your existing differential housing. Everything you need is included—pinion and carrier shims, seals, gaskets, and all necessary hardware. While professional installation is recommended for precise setup, experienced DIYers with the right tools can tackle the job in their own garage. Once installed, you’ll immediately notice improved throttle response, better towing capability, and a more confident feel behind the wheel.

Fits: 2011, 2012, 2013, 2014, 2015, 2016 Ford F250 Super Duty