Revolution Gear & Axle 86-89 Toyota 4Cyl Gen4 Pickup/Gen1 4Runner 8in Koyo 5.29 Ratio Gear Package

If you're looking to significantly change your gear ratio for larger tires or heavy towing on your 1986-1989 Toyota 4-cylinder Pickup or first-generation 4Runner, this Revolution Gear & Axle 5.29 ratio gear package is a solid option. This kit is designed for the 8-inch differential found in these specific Toyota models and uses a 5.29 ratio, which is a substantial change from stock. This ratio is ideal for vehicles running 35-inch or larger tires, helping to bring your engine RPMs back into a more efficient range at cruising speeds, improving drivability and reducing strain on the drivetrain. It can also be beneficial for towing applications where extra torque is needed.

This package includes a full set of Koyo bearings and installation hardware. Koyo is a well-known manufacturer of bearings, recognized for their durability and smooth operation. Using quality bearings like these is crucial for the longevity and performance of your differential. The 5.29 ratio means the ring gear will turn 5.29 times for every single rotation of the pinion gear, providing a significant increase in torque multiplication. This is a comprehensive kit, intended to give you the essential components needed for a proper gear installation. Proper installation by a qualified technician is highly recommended for this type of drivetrain modification, as gear setup requires specific tools and expertise to ensure correct backlash and pattern for optimal performance and to avoid premature wear.

When undertaking a gear change of this magnitude, it's important to consider that your speedometer will read differently, and you may need to recalibrate it. This kit is specifically for the 8-inch differential common in these 4-cylinder Toyota trucks and 4Runners. Ensure you are working with the correct differential housing before purchasing.