917950-7A SPEEDWAY MOTORS Gear Set

Review SPEEDWAY MOTORS Premium Lightweight Quick Change Gear Set #7a 21/24 Teeth

The Speedway 917950-7A Gear Set is a high-quality replacement option for those in need of an upgrade or repair for their 21/24 spline differential. This gear set is specifically designed for use with 7A applications, ensuring a perfect fit and seamless integration.

The gears in this set are manufactured using premium materials, such as steel alloys, to deliver exceptional strength, durability, and resistance to wear and tear. The teeth are precision-cut for optimal engagement and smooth operation, reducing noise and vibration.

One of the standout features of the Speedway 917950-7A Gear Set is its hardened and tempered construction. This process enhances the gears' resistance to bending and breaking, prolonging their lifespan and ensuring optimal performance even under heavy loads and high torque conditions.

This gear set also includes new bearings and seals, ensuring a complete and comprehensive upgrade. The bearings are designed to minimize friction and provide excellent load capacity, while the seals effectively prevent the intrusion of contaminants, such as water, dirt, and debris, keeping the differential functioning at its best.

The installation process for the Speedway 917950-7A Gear Set is straightforward and can be completed using standard hand tools. The set includes all necessary hardware and instructions for a hassle-free installation.

Overall, the Speedway 917950-7A Gear Set is a reliable and robust solution for those seeking to improve their vehicle's performance or replace worn-out components. Its precise fit, high-quality materials, and comprehensive design make it an excellent choice for those who demand the best from their automotive parts.

Pros and Cons of buying a Speedway 917950-7A Gear Set

The Speedway 917950-7A Gear Set is a popular choice among cyclists due to its durability, versatility, and affordability. However, like any other product, it comes with its advantages and disadvantages. In this analysis, we will discuss the pros and cons of purchasing a Speedway 7A 21/24-speed gear set to help you make an informed decision.

1. Affordability: The Speedway 917950-7A Gear Set is relatively inexpensive compared to other high-performance gear sets from well-known brands.

2. Durability: The gear set is known for its robustness and ability to withstand rough terrain and heavy use.

3. Versatility: With 21 speeds, the gear set offers a wide range of gearing options, making it suitable for various cycling terrains.

1. Weight: The Speedway 7A 21-speed gear set is heavier than some high-end gear sets, which can negatively impact the overall bike performance and the rider's experience.

2. Shifting Quality: Some users have reported issues with the gear shifting, particularly during high-speed transitions.

3. Compatibility: The gear set may not be compatible with all bicycle frames and other components, so it is essential to ensure compatibility before making a purchase.

The Speedway 917950-7A Gear Set offers a good balance of affordability, durability, and versatility. However, its weight and potential shifting issues may deter some buyers. If you're looking for a budget-friendly option for your bike, the Speedway 7A gear set could be a suitable choice. However, if you prioritize lightweight and seamless shifting, you might want to consider more expensive alternatives.

If you're on a tight budget and require a durable and versatile gear set for your bike, the Speedway 917950-7A Gear Set could be an excellent option. However, if you're willing to invest more in your cycling experience and prioritize lightweight and seamless shifting, you might consider exploring higher-end gear sets from well-known brands. Always make sure to check the compatibility of the gear set with your bike and other components before making a purchase.

Details:

Lighter then standard gears and nicely made. I would order again if needed. Rem finished polished surfaces and crown shaved profile teeth provide better tooth contact which means reduced friction, longer life cooler running, not only makes these perfect for the demands of racing, but also make a great complement to quick-change street setup - finish quieter running rear-end. I'm a big guy and this product is light but very stronger.

See installation tips for details. Lightweight gears are perfect for limited power such as crate engines to give quicker spin up time and maximum transfer. Our lightweight gears are perfect for high-horsepower applications with large tires.

Lightweight 10-spline gears feature reduced rotating weight which is ideal for limited power such as crate engines, constructed from high strength 8620 alloy steel making them suitable use in hp cars with bigger tires, rem polished surface reduces friction and extends gear life, quick change have crown shaved profile teeth maximum contact, note: some ratios offered at price due to small set not being drilled and/or lightened. Yes, I recommend this product. Lighter the part better. Polished surfaces run quieter, making for an excellent gear option a street quick change rear end.

8620 alloy steel stands up to the demands of high horsepower engines and large tires. Rem polished surfaces and crown shaved profile teeth reduce friction, run cooler longer deliver maximum tooth contact. Less weight and reduced friction surfaces means more power to the ground: rotating mass means more power goes tires. The smaller gear has not been undercut or drilled on the following sets.

But you can make the most of that horsepower by reducing weight in driveling. Headquarters. But theres one more place where you can get an advantage: the rear end quick change gears. Competition driveshafts and lightweight ring pinions can reduce rotating mass, making starts quicker more of that power it to the rear wheels.

Suitable for 410 sprint cars, 360 305 modified, open late model's and crate. Premium lightweight quick change gears are drilled to reduce rotating weight, deliver the most power ground. Track tested 8620 steel stands up to the competition: high demands are placed on the quick change gears of rear ends but Speedway motors has found a lightweight answer. Look new after several runs.

Definitely going to buy more when I need them. Available in a large number of gear ratios to fine tune the track conditions or your street applications.

specifications differentialsdepo:

• brand: Speedway Motors
• mpn: 917950-7a
• type: Quick Change Gears
• item length: 8.40
• california prop 65 warning: True

general differentialsdepo:

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

shipping differentialsdepo:

• service: economy, expedited
• class: economy, expedited
• type: fixed
• transit: 5-5 days

payments differentialsdepo:

• wallet: apple-pay
• other
• credit card: visa

returns differentialsdepo:

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

offer differentialsdepo:

• sold #: 12
• price: $142.99
• item condition: New
• in stock #: 1
• started: january 21, 2026
• availability: in stock
• options: ship-to-home

seller differentialsdepo:

• # reviews: 346145
• rating: 99.6%
• city: lincoln, nebraska