91048529 SPEEDWAY MOTORS Standard Gear Spline Kit Gm

Review SPEEDWAY MOTORS Standard Open Spider Gear Kit For Gm 8.5 Inch Spline for GM 2028

The Speedway Motors 91048529 Standard Gear Kit is a high-quality replacement option for the original equipment gears in GM 8.5-inch 28 spline rear ends. This kit is designed to provide reliable and durable performance for your vehicle, ensuring a smooth and efficient driving experience.

The gears in this kit are manufactured from premium materials, ensuring that they can withstand the heavy loads and high torque that are common in 8.5-inch rear ends. Each gear is precision machined to ensure a perfect fit and smooth engagement with the other gears in the set.

The kit includes a complete set of standard gears, including the pinion, ring and ring gear. This means that you can replace all of the gears in your rear end with this single kit, saving you time and money compared to purchasing each gear individually.

The pinion gear in this kit is designed to have a standard 27-tooth count, making it a popular choice for many applications. The ring gear is 31-spline and features a tooth count of 32. Both the pinion and ring gears are heat-treated for added strength and durability.

The kit also includes new bearings, seals, and other necessary hardware to make the installation process as easy and straightforward as possible. The bearings are precision machined to ensure a perfect fit, while the seals keep your differential fluid clean and free from contaminants.

Overall, the Speedway Motors 91048529 Standard Gear Kit is an excellent choice for anyone looking to upgrade the gears in their GM 8.5-inch 28 spline rear end. With its high-quality components, easy installation process, and affordable price, this kit offers excellent value for money and is sure to provide many years of reliable performance.

Pros and Cons of buying a Speedway 91048529 Standard Gear Kit for GM 8.5 28 Spline Axles

The Speedway 91048529 Standard Gear Kit is a popular choice for those seeking to upgrade their GM 8.5 28 spline axles. This kit offers several advantages and potential drawbacks. Let's explore the pros and cons:

1. Improved Performance: The standard gears in this kit are designed to provide better torque and horsepower, resulting in improved acceleration and overall performance.

2. Durability: The gears are made of high-strength materials, ensuring long-lasting use and resistance to wear and tear.

3. Customizability: The kit allows users to customize their vehicle's gear ratio, enabling them to fine-tune their vehicle for various driving conditions and preferences.

4. Affordability: Compared to other high-performance gear kits, the Speedway 91048529 is relatively affordable.

1. Complex Installation: Installing the kit requires a significant amount of mechanical knowledge and expertise, making it a challenging project for those without experience.

2. Potential Noise: Some users have reported increased noise levels after installing the kit, which may be due to backlash or other factors.

3. Potential Vibration: The higher torque output of the gears may result in increased vibration, which some users may find uncomfortable.

The Speedway 91048529 Standard Gear Kit for GM 8.5 28 spline axles offers several advantages, including improved performance, durability, customizability, and affordability. However, it comes with potential drawbacks, such as complex installation, potential noise, and vibration.

If you're confident in your mechanical abilities and willing to invest the time and effort into the installation process, the Speedway 91048529 Standard Gear Kit can be an excellent choice for enhancing the performance of your GM 8.5 28 spline axles. However, if you're not comfortable with the installation process or prefer a quieter, smoother driving experience, you may want to consider alternative options or seek professional help.

Details:

Fits Gm 8.5 open differential with 28 spline axles. Includes 2 side gears, pinion gear thrust washers, 1 cross pin shaft, and bolt. Part # 91048529 condition new brand Speedway motors sold set details these spider gear kits are the ultimate budget-minded high-quality option for your rear end. Specs axle splines 28 bearings included no sold in quantity set mfg.

Headquarters. The meticulous production process includes procuring raw materials from the best reliable sources, forging under strict supervision to ensure proper chemical composition, broaching, chauffeuring, heat treatment, shot blasting, grinding, and a final inspection.

specifications differentialsdepo:

• for makes: Gm
• for years: 2028
• brand: Speedway Motors
• mpn: 91048529
• type: Differential Carriers
• item length: 7.00
• california prop 65 warning: True

offer differentialsdepo:

• availability: in stock
• price: $75.99
• item condition: New
• sold #: 10
• started: february 11, 2026
• options: ship-to-home

payments differentialsdepo:

• other
• wallet: apple-pay
• credit card: diners-club

seller differentialsdepo:

• rating: 99.7%
• city: lincoln, nebraska
• # reviews: 348925

returns differentialsdepo:

• time: 30 days
• policy: returns accepted
• paid by: seller

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

shipping differentialsdepo:

• transit: 6-6 days
• class: economy, expedited
• type: fixed
• service: economy, expedited