Discover the reliability and performance of the ZG GM12P-390 ring and pinion gear set from USA Standard Gear. Designed specifically for GM 12 bolt passenger cars, this gear set is an excellent choice for those looking to enhance their vehicle's performance without compromising on quality.

• Fits: GM 12 bolt passenger car
• Ring Gear Diameter: 8.875 inches
• Pinion Spline Count: 30 splines
• Ring Gear Bolts: 12 bolts
• Gear Ratio: 3.90

This gear set not only provides a significant boost to your vehicle's acceleration but also offers enhanced torque, making it a favorite among car enthusiasts. Customers have noted that the installation process is straightforward, with many stating, "It fit perfectly and made a noticeable difference in my car's performance." Others have praised its durability, mentioning, "I've put some serious miles on this set, and it still performs like new."

With a 1-year warranty against manufacturer defects, you can invest in your vehicle with confidence. Whether you're restoring a classic or upgrading your ride for better performance, the ZG GM12P-390 is a reliable choice that won't let you down.

Technical specifications and features like these make it a standout option for those in the market for a quality ring and pinion set. Upgrade your gear set today and experience the difference!