Spools

Spools are specialized components used in high-performance racing and drag applications to lock the rear differential, ensuring both rear wheels spin at the same rate. Unlike a traditional differential, which allows the wheels to turn at different speeds while cornering, a spool eliminates any differentiation between the two rear wheels. This setup provides maximum traction and stability, especially in straight-line racing, where both rear wheels need to rotate at the same speed to optimize acceleration. Spools are commonly employed in drag racing and other racing disciplines where straight-line performance is paramount.

Selecting the correct Spool depends on various factors, including the type of racing, the vehicle's power output, and the specific requirements of the rear end setup. Consider the intended application and the rules and regulations governing the racing class. Determine the size and spline count of the axle shafts to ensure compatibility with the spool. Additionally, evaluate the material and construction of the spool, as they can affect durability, weight, and overall performance. Whether you're building a dedicated drag car or upgrading your existing rear end setup, choosing the right spool is essential for achieving optimal traction and performance.

JEGS offers a wide range of Spools to meet the needs of racers and enthusiasts seeking maximum traction and performance. Our selection includes spools for various rear end setups and racing applications, ensuring that you can find the perfect solution for your vehicle. Whether you're looking for a racing spool, a spool for a rear-wheel-drive street car, or a differential spool for high-performance applications, JEGS has you covered. With high-quality construction and precision engineering, our spools deliver the durability and performance you need to dominate on the track or strip.

What Are Spool Common Pros and Cons?

Automotive racing differential spools are designed specifically for racing applications and are commonly used in high-performance vehicles, including dragsters and drag vehicles. Racing differential spools are typically made of high-quality materials and are designed to withstand the extreme conditions of racing. They are also designed to be lightweight, which can improve the overall performance of the vehicle. However, one major drawback of racing differential spools is that they can be noisy and produce unwanted vibration when turning. Additionally, the lack of speed differentiation between the wheels can cause increased tire wear and reduced fuel efficiency. Overall, racing differential spools can be an excellent choice for high-performance racing vehicles, but they may not be suitable for everyday driving or vehicles used in normal road conditions.

Which Spools Are Best?

There is no one "best" automotive racing differential spool, as the ideal differential spool will depend on the specific needs and preferences of the driver and the vehicle's intended use. However, full spools which the ring gear bolts to are much stronger than mini spools and are highly recommeneded for high-horsepower and drag only applications. Mini spools can be used for lower horsepower applications and are easier to install. However, mini spools and drive axles they connect can be susceptible to damage, depending on how the vehicle is driven, if they can't handle the horsepower or the strain put on them when turning.

How Much Do Spools Cost?

The cost of an automotive racing differential spool can vary greatly depending on a number of factors, including the specific type of spool, the brand, and the retailer. Generally speaking, racing differential spools can range from a few hundred to a few thousand dollars, with more advanced and high-quality spools typically being more expensive. Additionally, the cost of installation and any necessary modifications to the vehicle can also add to the overall cost of the differential spool. It is important to consider the cost-benefit ratio of a racing differential spool, taking into account the potential performance benefits and the cost of maintenance and repairs. Drivers should also be aware that a high-performance racing differential spool may not be necessary for all racing applications, and that there may be less expensive options that can still provide the desired performance benefits.

Filter By Vehicle