Description

4th Gen 4Runner 4.88 Gear | Toyota FJ Cruiser 4.88 Ratio 8 Inch Open Carrier Gear Package Revolution Gear

The 4th Gen 4Runner 4.88 Gear upgrade by Revolution Gear and Axle delivers exceptional torque and drivability. Whether you’re conquering rocky trails or towing heavy gear, this 4.88 gear ratio boosts traction and performance. It’s built for Toyota’s 8.0″ V6 and IFS differentials with open carriers, offering a direct and reliable fit.

Features of 4th Gen 4Runner 4.88 Gear:

• Front and rear 4.88 ring and pinion sets included for balanced performance.
• Thick-cut gears fit 3.73 and down carriers without requiring carrier swaps.
• Precision-cut from premium-grade steel for maximum strength and longevity.
• Master Install Kits include Timken or Koyo bearings for smooth operation.
• Boosts low-end torque, perfect for oversized tires or off-road use.
• Engineered to reduce gear whine for quiet, comfortable driving.

What’s Included:

• Front 4.88 Ring and Pinion Gear Set
• Rear 4.88 Ring and Pinion Gear Set
• Front Master Install Kit (with premium bearings)
• Rear Master Install Kit (with premium bearings)

Specifications of 4th Gen 4Runner 4.88 Gear:

• Gear Ratio: 4.88
• Axle Compatibility: Toyota 8.0″ V6 Rear, 8.0″ IFS Front
• Carrier Type: Open (Thick Gear for 3.73 and Down)
• Pinion Spline Count: 29 Spline
• Material: OEM-grade, heat-treated steel
• Warranty: 2-Year Limited Manufacturer Warranty

Fitment:

• Toyota 4Runner 2003–2008 (open differential)
• Lexus GX470 2003–2009 (open differential)
• Toyota FJ Cruiser 2007–2014 (open carrier)

FAQs:

• Will this fit my stock open differential?
  Yes, it’s specifically built for open differentials with 3.73 and down carriers.
• Do I need to replace the carrier?
  No, the thick gear design fits without replacing the existing carrier.
• What benefits does the 4.88 gear ratio offer?
  It greatly improves torque, making towing and off-roading much easier and more efficient.
• Are the install kits truly complete?
  Absolutely. Each kit includes everything needed, including Timken or Koyo bearings.
• Is this upgrade noisy during highway driving?
  Not at all. Precision machining ensures quiet and smooth performance across all speeds.