Description
1st Gen 4Runner 4.88 Gear | Toyota 8 Inch 4Cyl Pickup 1986-89 and Gen1 4Runner 4.88 Ratio Gear Package Revolution Gear
The 1st Gen 4Runner 4.88 Gear kit by Revolution Gear and Axle delivers the power and crawl performance your Toyota needs. Specifically engineered for 1984–1989 4-cylinder Toyota 4Runner and Pickup models, this gear set restores lost performance caused by oversized tires or added weight. Whether you’re off-roading or towing, this 4.88 gear ratio dramatically boosts low-end torque and control.
Features of 1st Gen 4Runner 4.88 Gear:
- Engineered for 1984–1989 Toyota 4Runner and Pickup (4-cylinder only)
- Precision-cut for Toyota 8″ rear and 7.5″ front differentials
- Restores drivability when larger tires are installed
- Increases throttle response and off-road traction immediately
- Built from heat-treated OEM-grade alloy steel for long-lasting strength
- Includes Timken or Koyo master install kits for both axles
- Designed for quiet operation and smooth performance in all conditions
What’s Included:
- Front 4.88 Ring and Pinion Gear Set – Toyota 7.5″
- Rear 4.88 Ring and Pinion Gear Set – Toyota 8.0″
- Front Master Install Kit (Timken or Koyo bearings)
- Rear Master Install Kit (Timken or Koyo bearings)
Specifications of 1st Gen 4Runner 4.88 Gear:
- Gear Ratio: 4.88
- Pinion Splines: 23 Front / 27 Rear
- Material: OEM-grade, heat-treated alloy steel
- Differential Type: Toyota 7.5″ front / 8.0″ rear
- Warranty: 2-Year Limited Manufacturer Warranty
Fitment:
- 1984–1989 Toyota 4Runner (DLX, SR5 – 4-cylinder only)
- 1986–1989 Toyota Pickup (Base, DLX, SR5, Turbo – 4-cylinder)
FAQs:
- Will this gear set fit my 1st Gen 4Runner?
Yes. It’s designed for 4-cylinder 4Runners and Pickups with Toyota 7.5″ front and 8″ rear axles. - Why choose the 4.88 gear ratio?
It provides better torque and crawl ratio, especially helpful when using larger tires or towing. - Do both install kits come in the box?
Absolutely. You receive front and rear install kits with premium bearings for hassle-free setup. - Is this kit noisy on highways?
Not at all. Thanks to precision machining, the gears run quietly in every driving condition. - Do I need to recalibrate anything after install?
Yes. Recalibrating your speedometer is recommended after gear ratio or tire size changes.
